WO2023106681A1 - 자가 형광 촬영 장치 및 그 동작 방법, 자가 형광 영상 평가 장치 및 그 평가 방법 - Google Patents
자가 형광 촬영 장치 및 그 동작 방법, 자가 형광 영상 평가 장치 및 그 평가 방법 Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/12—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/117—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/117—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes
- A61B3/1173—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes for examining the eye lens
- A61B3/1176—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes for examining the eye lens for determining lens opacity, e.g. cataract
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0008—Apparatus for testing the eyes; Instruments for examining the eyes provided with illuminating means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0016—Operational features thereof
- A61B3/0025—Operational features thereof characterised by electronic signal processing, e.g. eye models
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/14—Arrangements specially adapted for eye photography
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0071—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence by measuring fluorescence emission
Definitions
- the present disclosure relates to an apparatus and operation method for taking an autofluorescence (AF) image of an eye to be examined, an apparatus and an evaluation method for evaluating an autofluorescence image, and more particularly, capable of quantitatively evaluating the degree of ophthalmic disease or presbyopia progression It relates to filter-based AF image shooting and evaluation.
- AF autofluorescence
- LOCS Lens Opacities Classification System
- FAF imaging does not require injection of a fluorescent dye to image the retina, and utilizes the fluorescence properties of lipofuscin in the retinal pigment epithelium (RPE) to generate images. Since an abnormal pattern of autofluorescence (AF) in FAF images acts as a marker for retinal disease, conventional FAF was used to evaluate retinal disease or abnormality, but was not used to evaluate lens abnormality.
- RPE retinal pigment epithelium
- Korean Patent Registration No. 10-1643953 (published on July 29, 2016) is a technique for determining an intensity histogram in a patient's FAF image and comparing it with a control group to determine whether there is an abnormality, but this is also a technique for determining retinal disease It is difficult to use for quantitative evaluation of lens abnormalities, including the degree of presbyopia or cataract progression.
- An embodiment of the present disclosure provides an apparatus and operation method for taking an autofluorescence image of an eye to be examined based on a filter for evaluating crystalline lens abnormalities.
- Another embodiment of the present disclosure provides an apparatus and method for analyzing and evaluating an autofluorescence image of an eye to be examined based on a filter for evaluating a lens abnormality.
- Another embodiment of the present disclosure provides a filter usable in an apparatus for taking an autofluorescence image of an eye to be examined for evaluation of crystalline lens abnormalities.
- An embodiment of the present disclosure provides an apparatus for photographing autofluorescence of an eye to be examined and an operation method thereof.
- An embodiment of the present disclosure provides an apparatus and method for quantitatively evaluating an autofluorescence image of an eye to be examined.
- An autofluorescence photographing apparatus includes a light source for illuminating an eye to be examined through a preset optical path, an image sensor for capturing an eye in which at least a portion of autofluorescence is emitted according to illumination of the light source, and an image sensor and an eye to be examined.
- a filter disposed therebetween may be included, and the filter may include a plurality of portions having different light transmittances.
- An autofluorescence image evaluation apparatus includes a processor and a memory electrically connected to the processor and storing at least one code executed by the processor, the memory allowing the processor to Stores a code that analyzes the autofluorescence image to determine information related to opacity or cataract grade of the eye to be examined, wherein the autofluorescence image generated by illumination of a light source is disposed between the image sensor and the eye to be examined , It may be an image generated based on an output of an image sensor incident through a filter including a plurality of regions having different light transmittances.
- a method of operating a self-fluorescence photographing device includes the steps of, by a processor, emitting a light source to illuminate an eye to be examined through a preset optical path;
- the step of photographing the eye to be examined includes the step of photographing the eye to be examined, wherein the step of photographing the eye passes through a filter including a plurality of regions having different light transmittances and transmits light to the image sensor based on the autofluorescence of the eye to be examined, which is incident on the image sensor. generating an output signal.
- An evaluation method for an autofluorescence image evaluation apparatus includes the steps of receiving, by a processor, at least a portion of an autofluorescence image of an eye to be examined, and analyzing the autofluorescence image by the processor to obtain information related to opacity or cataract grade of the eye to be examined.
- autofluorescence image autofluorescence of the eye generated by illumination of a light source passes through a filter disposed between an image sensor and the eye to be examined and includes a plurality of regions having different light transmittances and is incident thereon. It may be an image generated based on an output of an image sensor.
- the autofluorescence imaging apparatus and method of operating the same may capture an autofluorescence image capable of quantitatively determining whether there is an abnormality in the crystalline lens.
- the autofluorescence image evaluation apparatus and evaluation method may quantitatively evaluate crystalline lens abnormality including the degree of progression of presbyopia or the degree of progression of cataract based on the autofluorescence image.
- Embodiments of the present disclosure can quantitatively evaluate patients' crystalline lens abnormalities and prevent unnecessary cataract surgeries, thereby reducing patient discomfort and unnecessary surgical costs.
- FIG. 1 is a diagram illustrating an environment in which an autofluorescence imaging apparatus according to an embodiment of the present disclosure captures an image using a filter for evaluating whether there is an abnormality in the lens.
- FIG. 2 is a block diagram schematically illustrating the configuration of an autofluorescence imaging device according to an embodiment of the present disclosure.
- 3 and 4 are flowcharts illustrating an operating method of a self-fluorescence imaging apparatus according to an exemplary embodiment of the present disclosure.
- FIGS. 5 and 6 are diagrams illustrating exemplary embodiments of a filter for evaluating whether there is an abnormality in the crystalline lens according to an embodiment of the present disclosure.
- FIG. 7 is a block diagram schematically showing the configuration of an autofluorescence image evaluation apparatus according to an embodiment of the present disclosure.
- FIG. 8 is a flowchart illustrating an evaluation method of an autofluorescence image evaluation apparatus according to an embodiment of the present disclosure.
- FIG 9 and 10 are diagrams for explaining an evaluation method of an autofluorescence image evaluation apparatus according to an embodiment of the present disclosure.
- FIGS. 1 and 2 An environment and configuration for driving the autofluorescence imaging device according to an embodiment of the present disclosure will be described with reference to FIGS. 1 and 2 .
- the self-fluorescence imaging apparatus 100 includes a filter (hereinafter referred to as an 'analysis filter') 150 for evaluating crystalline lens abnormality inside the main body 100a including a camera, or It can be set to be disposed outside the body (100a).
- the analysis filter 150 is implemented in the form of glasses, and an autofluorescence image can be captured while the subject wears the analysis filter 150 in the form of glasses when capturing an image of the autofluorescence imaging device 100. .
- the autofluorescence imaging apparatus 100 may be set to illuminate the patient's eye to be examined by emitting a light source that generates excitation light and guiding the excitation light through a preset optical path.
- the autofluorescence photographing apparatus 100 includes an image sensor 140 into which autofluorescence (AF) emitted as autofluorescence of the eye to be examined by excitation light is incident, and an analysis filter is provided between the image sensor 140 and the eye to be examined. can be placed in
- the analysis filter may be set to be disposed inside or outside the main body 100a.
- An embodiment disposed outside includes wearing the analysis filter 150 in the form of glasses by an examinee. That is, autofluorescence generated in the eye to be examined by the excitation light may pass through the analysis filter 150 and be incident on the image sensor 140 .
- Autofluorescence may be generated in the crystalline lens as well as lipofuscin in the retinal pigment epithelium (RPE) of the eye to be examined.
- RPE retinal pigment epithelium
- the present inventors confirmed an increase in the brightness of a part of the image by autofluorescence of the lens, and as a result, based on the change in the gray level of the autofluorescence image corresponding to the figure pattern of the analysis filter according to an embodiment of the present invention, whether or not the lens is abnormal. can be determined quantitatively.
- This is determined to be a complex phenomenon caused by a part of retinal autofluorescence that is obscured by opacity, a part of retinal autofluorescence incident on the image sensor 140 due to scattering, refraction, and the like, and scattering of crystalline lens autofluorescence. Accordingly, it is possible to quantitatively evaluate the progress of cataract and the progress of presbyopia related to lens opacity based on the analysis filter according to an embodiment of the present invention.
- the camera of the autofluorescence photographing apparatus 100 may include an image sensor (CCD or CMOS) 140 and may adjust a field of view and focus so as to capture autofluorescence from the eye to be examined.
- CCD image sensor
- CMOS complementary metal-oxide-semiconductor
- the device may include an optical system 130 including a mirror, a lens, and the like to guide light emitted from a light source to the eye to be examined by passing through a first filter set to pass only light of a specific wavelength.
- an optical system 130 including a mirror, a lens, and the like to guide light emitted from a light source to the eye to be examined by passing through a first filter set to pass only light of a specific wavelength.
- the first filter may be selected to reduce wavelengths that do not correspond to a wavelength band that excites a particular cell to generate autofluorescence (eg, a wavelength at or near about 470 nm).
- a wavelength band that excites a particular cell to generate autofluorescence eg, a wavelength at or near about 470 nm.
- embodiments of the present invention are not limited to a specific band of the excitation wavelength, and other wavelength bands of the excitation light induced to the eye according to other configurations of the autofluorescence imaging apparatus are also irrelevant.
- the first filter may be omitted.
- Autofluorescence generated in the eye to be examined by the excitation light may pass through a lens or a mirror of the optical system 130 and be incident on the image sensor 140 of the camera.
- the autofluorescence photographing apparatus 100 may include a second filter for removing undesirable band light from autofluorescence or non-autofluorescence light.
- the analysis filter 150 passes autofluorescence generated in the eye to be examined before entering the image sensor 140 and may be set to be disposed before or after the second filter.
- the analysis filter 150 When the analysis filter 150 is disposed outside the main body 100a, it includes a structure that can be attached to a cradle for holding the patient's forehead and chin, or a camera so that the analysis filter 150 can be selectively used according to the shooting mode. It may include a rotatably deployable structure in the front part (eg, a wheel with an analytical filter 150 mounted thereon and a wheel drive motor).
- the analysis filter 150 may include a plurality of sites having different light transmittances, which will be described in detail below with reference to FIGS. 5 and 6 .
- the autofluorescence imaging device 100 may store the autofluorescence image generated based on the output of the image sensor 140 in the memory 120 or transmit it to an external device connected through a communication module.
- the autofluorescence photographing apparatus 100 may include a processor 110 that performs post-processing of the wavelength and brightness of a light source or the generated autofluorescence image.
- the autofluorescence imaging device 100 may be connected to an external control computing device, and the control computing device may set the autofluorescence imaging device 100 or post-process the captured autofluorescence image.
- the processor 110 of the self-fluorescence imaging apparatus 100 may be understood as a concept including a computing device implemented separately from the main body 100a.
- the controlling computing device may include, for example, a tablet computer, PC, laptop computer, smart phone, or the like.
- the communication module may include a configuration similar to part or all of the communication unit 210 of the self-fluorescence image evaluation device 200 below, and the main body 100a includes a control computing device and cables, LAN, Wi-Fi, and short-range wireless It can be connected in various ways, such as communication.
- the autofluorescence photographing apparatus 100 controls a light source to emit light including a wavelength band capable of generating autofluorescence of the eye to be examined (S110).
- Light generated from the light source may include a wavelength band (eg, a wavelength of about 470 nm or thereabouts) that excites specific cells to generate autofluorescence, or may include only the corresponding wavelength band.
- a wavelength band eg, a wavelength of about 470 nm or thereabouts
- Light emitted from the light source may be guided to illuminate the eye to be examined by passing through an optical system 130 such as an optical filter, a mirror, or a lens.
- the processor 110 may control angles and positions of elements of the optical system 130 .
- the light emitted from the light source and guided to the eye to be examined through the optical system 130 generates autofluorescence in the retinal cells or lens of the eye to be examined, and the autofluorescence passes through the analysis filter 150 and enters the image sensor 140. (S120).
- autofluorescence may pass through an optical system 130 such as a mirror, an optical filter, or a lens before or after passing through the analysis filter 150 .
- an optical system 130 such as a mirror, an optical filter, or a lens
- the image sensor 140 outputs an electrical signal based on the incident autofluorescence, and the processor 110 generates an autofluorescence image based on the output of the image sensor 140 (S130).
- the autofluorescence imaging device 100 selects an image type for distinguishing an autofluorescence image generated based on the analysis filter 150 according to an embodiment of the present invention from a conventional autofluorescence image. Significant information may be included in header information of the autofluorescence image (S140).
- S140 Autofluorescence image
- the autofluorescence imaging device 100 based on the analysis filter 150 according to an embodiment of the present invention operates as an SCU. It is possible to create a user-defined message meaning to transmit an image.
- the autofluorescence imaging device 100 stores the autofluorescence image generated based on the analysis filter 150 according to an embodiment of the present invention in a control computing device, or stores the autofluorescence image in a clinical information system (CIS), PACS, or hospital information system (HIS). System) can be transmitted to the server device.
- CIS clinical information system
- PACS PACS
- HIS hospital information system
- the autofluorescence imaging device 100 checks the location of the analysis filter 150 (S210) to capture an autofluorescence image based on the analysis filter 150 according to an embodiment of the present invention, and After confirming the imaging mode of the fluorescence imaging apparatus 100 (S220), a warning message or a confirmation message may be output through a display, sound, warning light, etc. based on the comparison result (S230).
- the autofluorescence imaging device 100 When the analysis filter 150 is rotated and positioned by a wheel in a rotary manner, the autofluorescence imaging device 100 has a sensor for determining the location according to rotation, and a sensor for determining whether the filter is coupled when attached to the cradle in a detachable structure. By this, it is possible to determine the position of the analysis filter 150 (including whether or not it is attached or detached). Alternatively, the self-fluorescence imaging device 100 may recognize the output of the RF chip mounted on the analysis filter 150 to determine the position (including attachment/detachment). When the analysis filter 150 is implemented in the form of glasses, it is possible to determine whether or not the subject is wearing it based on a human body sensor (infrared light, etc.).
- the autofluorescence imaging device 100 may be implemented to be driven in a conventional autofluorescence imaging mode in addition to the autofluorescence imaging mode based on the analysis filter 150 according to the embodiment of the present invention. It may include a mechanical interface for selecting a mode (eg, the rotary lever 160 of FIG. 1 ) or an electrical interface of a display of the main body 150a or a control computing device. Therefore, after checking whether the autofluorescence imaging device 100 is in the autofluorescence imaging mode based on the analysis filter 150 according to the embodiment of the present invention, the analysis filter is set to the conventional autofluorescence imaging mode. A warning message may be output when 150 is in the shooting position or vice versa. Alternatively, regardless of the photographing mode, when the analysis filter 150 is disposed at a photographing position, a message indicating that the analysis filter 150 has been activated may be output.
- Embodiments of the analysis filter 150 according to an embodiment of the present disclosure will be described with reference to FIGS. 5 and 6 .
- the analysis filter 150 may include an outer circumferential portion 510 that can be attached to a holder for holding the patient's forehead and chin or coupled to the main body 100a and a filter portion 520 through which autofluorescence generated from the eye to be examined passes.
- the filter unit 520 may include a plurality of portions 521, 522, and 523 having different light transmittances.
- the light transmittance of the present specification is a concept that includes a change in luminous intensity or other characteristics of light due to scattering or refraction after light passes through.
- the filter unit 520 may include a transparent first portion 521 and second portions 522 and 523 formed with a plurality of figures having lower light transmittance than the first portion 521 .
- the first portion 521 may be transparent or opaque, but may have higher light transmittance than the second portions 522 and 523 .
- the filter unit 520 is made of glass or plastic, and a film having a different color or material is attached to the second parts 522 and 523 or the surface roughness of the second parts 522 and 523 is changed. It can be.
- the second portions 522 and 523 may be frosted glass caused by friction or corrosion.
- the analysis filter 150 is implemented with glass
- the second parts 522 and 523 may be implemented with a glass etchant or a sand blast that performs pneumatic spraying of etching glass using laser processing, sand, or emery sand.
- FIG. 11 is a photograph taken after the analysis filter 150, which is an embodiment of the present invention, is implemented in the form of FIG. 6 (c) by a laser processing method and positioned on top of a printed matter. As can be seen in FIG. 11 , it can be seen that the light transmittance of the second portion is lower than the light transmittance of the first portion.
- the second part 522 of the analysis filter 150 may be implemented as a plurality of figure patterns, and may have a plurality of ring shapes and a plurality of circle shapes. In the case of a ring shape, the inside of the circle inside the ring may be the first part.
- the autofluorescence image evaluation apparatus 200 determines the gray level in the portion of the autofluorescence image corresponding to the first portion 521 and/or the second portions 522 and 523 of the analysis filter. Based on the measurement result, it is possible to evaluate whether or not the lens is abnormal.
- the autofluorescence image can be analyzed as the gray level inside the circle inside the ring and the gray level of the ring part as a first part and a second part, respectively. Accordingly, in the case of a ring-shaped figure, a position for analyzing a gray level can be easily specified through figure recognition.
- a plurality of figure patterns having low light transmittance of the analysis filter 150 may be spaced apart from each other, and the plurality of figures may be disposed in a vertically symmetrical or left-right symmetrical form in the filter unit.
- FIG. 6 shows exemplary embodiments in which only the filter unit is shown without omitting the outer periphery of the analysis filter 150.
- the second portions 611 and 612 of the analysis filter 150 have a plurality of rectangular shapes having uniform light transmittance inside and lower light transmittance than other portions (first portion). It can be a shape. Also, the area of the figure of the second part 612 far from the center (located in the periphery, close to the outer circumference) may be larger than that of the figure of the second part 611 close to the center of the filter unit.
- the horizontal ratio of the figure of the second part 612 far from the center may be greater.
- the second part in the autofluorescence image is suitable for barrel distortion due to the shape of an eyeball having a larger left-to-right ratio or the spherical shape of the eyeball or the shape of a lens. Parts of the image corresponding to may be displayed on the image in the same size.
- the shape of the second portion 622 far from the center may be a rectangle having a different shape from the shape 621 of the second portion closer to the center.
- the shape 621 of the second portion may be a square or rectangle, and the shape of the second portion 622 may be a parallelogram or trapezoid. In this case, you can see the result of more actively reflecting the barrel distortion.
- the plurality of figures corresponding to the second part of the filter part may have different numbers of figures distributed along the horizontal line and the vertical line crossing the center of the filter part.
- the number of figures distributed along the vertical line may be smaller, that is, in the distribution of figures along the vertical line, the figure of the second part may not be disposed in the part 623 close to the outer periphery.
- the shape of the eyeball may be a shape pattern in consideration of a case in which the shape of the eyeball is an earth ellipse with a greater left-to-right ratio or a case in which more left and right parts of the eye to be examined are imaged due to eyelids or the like.
- a plurality of figures corresponding to the second part of the filter unit may be arranged in a form extending radially from a central point.
- the plurality of figures corresponding to the second part of the filter part may not be disposed in a part near the central part 631.
- a point to guide the patient's gaze is required.
- the patient's gaze may be guided and an appropriate autofluorescence image may be taken.
- the part where the figure corresponding to the second part is not disposed may be the central part 631 or a position spaced apart from the central part 631 by a predetermined position in a downward or upward direction. Even if it is focused on the center of the eye due to the structure of the human eye, it can be taken differently in autofluorescence fundus photography. A figure corresponding to the part may not be placed.
- a configuration of an autofluorescence image evaluation apparatus 200 according to an embodiment of the present disclosure will be described with reference to FIG. 7 .
- the autofluorescence image evaluation device 200 may analyze an autofluorescence image generated based on an analysis filter in the autofluorescence imaging device to quantitatively evaluate whether there is an abnormality in the crystalline lens of the eye to be examined.
- the autofluorescence image evaluation device 200 may be implemented as a control computing device that controls the autofluorescence imaging device, a server device of CIS/PACS/HIS, or a single computing device.
- the autofluorescence image evaluation device 200 may be a computing device capable of loading and analyzing an autofluorescence image, such as a tablet computer, a laptop computer, a PC, or a smart phone.
- the autofluorescence image evaluation apparatus 200 may include a communication unit 210 that receives an autofluorescence image from a CIS/PACS/HIS server device, an autofluorescence imaging device, or a control computing device of the autofluorescence imaging device.
- the communication unit 210 may include a wireless communication unit or a wired communication unit.
- the wireless communication unit may include at least one of a mobile communication module, a wireless Internet module, a short-distance communication module, and a location information module.
- the mobile communication module transmits and receives a radio signal with at least one of a base station, an external terminal, and a server on a mobile communication network constructed according to long term evolution (LTE), which is a communication method for mobile communication.
- LTE long term evolution
- the wireless Internet module is a module for wireless Internet access, and may be built-in or external to the self-fluorescence image evaluation device 200, and can be used for WLAN (Wireless LAN), Wi-Fi (Wireless-Fidelity), Wi-Fi (Wireless Fidelity) Direct, Digital Living Network Alliance (DLNA), etc. may be used.
- WLAN Wireless LAN
- Wi-Fi Wireless-Fidelity
- Wi-Fi Wireless Fidelity
- DLNA Digital Living Network Alliance
- the short-distance communication module is a module for transmitting and receiving data through short-distance communication, and includes BluetoothTM, RFID (Radio Frequency Identification), Infrared Data Association (IrDA), UWB (Ultra Wideband), ZigBee, NFC (Near Field communication), etc.
- BluetoothTM BluetoothTM
- RFID Radio Frequency Identification
- IrDA Infrared Data Association
- UWB Ultra Wideband
- ZigBee ZigBee
- NFC Near Field communication
- the location information module is a module for acquiring the location of the self-fluorescent image evaluation device 200, and is a GPS (Global Positioning System) module based on satellite navigation technology, or a location based on wireless communication with a wireless communication base station or wireless access point. It may be a module that obtains.
- the location information module may include a WiFi module.
- the autofluorescence image evaluation apparatus 200 may include an interface unit 220 for user input, and the interface unit 220 may include an input unit or an output unit.
- the input unit includes a user interface (UI) including a microphone and a touch interface 221 for receiving information from a user, and the user interface includes a mouse and keyboard as well as mechanical and electronic interfaces implemented in the device. If it can be done and it is possible to input a user's command, the method and form are not particularly limited.
- the electronic interface includes a display capable of touch input.
- the output unit is for conveying information to the user by displaying the output of the self-fluorescent image evaluation device 200 to the outside, and displays 222, LED, and speaker 223 for displaying visual, auditory, or tactile output ) and the like.
- the self-fluorescence image evaluation apparatus 200 may include a peripheral device interface for data transmission with various types of connected external devices, a memory card port, an external device I/O (Input/Output) port ( port), etc.
- a peripheral device interface for data transmission with various types of connected external devices, a memory card port, an external device I/O (Input/Output) port ( port), etc.
- the autofluorescence image evaluation apparatus 200 includes a memory 240 that stores an autofluorescence image received or captured by a camera and stores codes for driving the processor 230 .
- the autofluorescence image evaluation apparatus 200 analyzes the autofluorescence image loaded by the processor 230 to determine information related to opacity or cataract grade of the eye to be examined.
- the autofluorescence image analyzed by the autofluorescence image evaluation device 200 the autofluorescence of the eye to be examined, generated by the illumination of the light source, is disposed between the image sensor and the eye to be examined, and passes through a filter including a plurality of regions having different light transmittances. It is an image generated based on the output of the image sensor incident on the image.
- the autofluorescence image evaluation device 200 receives an autofluorescence image captured based on an analysis filter or at least a part thereof from an autofluorescence imaging device, a control computing device of the autofluorescence imaging device, or a server device of CIS/PACS/HIS ( S310).
- the autofluorescence image evaluation apparatus 200 may receive only a portion of the autofluorescence image corresponding to the first portion and/or the second portion of the analysis filter including a plurality of portions having different light transmittances of the autofluorescence image.
- the autofluorescence image evaluation apparatus 200 analyzes the gray level of the second part of the analysis filter and/or the autofluorescence image part corresponding to the first and second parts (S320), and determines the opacity or cataract grade of the eye to be examined. It is possible to determine related information (S330).
- the autofluorescence image evaluation device 200 When the autofluorescence image evaluation device 200 receives the entire autofluorescence image taken based on the analysis filter, it detects a portion of the autofluorescence image corresponding to the second region of the analysis filter based on a machine learning-based learning model.
- the learning model may be a shape pattern of the second part of the analysis filter or a learning model learned from an image in which a part corresponding to the second part of the analysis filter is labeled in the autofluorescence image.
- the autofluorescence image evaluation device 200 When the autofluorescence image evaluation device 200 receives all or part of the autofluorescence image captured based on the analysis filter, the autofluorescence image portion corresponding to the second region of the analysis filter is evaluated based on a machine learning-based learning model.
- the degree of lens opacity, the degree of cataract progression, or the degree of presbyopia may be determined (S330) by inputting the information to a learning model based on machine learning.
- the learning model may be a learning model learned with an image in which the entire autofluorescence image or a portion corresponding to the second region of the analysis filter is labeled with the degree of lens opacity, the degree of cataract progression, or the degree of presbyopia progression.
- the learning model based on machine learning is CNN, R-CNN (Region based CNN), C-RNN (Convolutional Recursive Neural Network), Fast R-CNN, Faster R-CNN, R-FCN (Region based Fully Convolutional Network) ), a neural network having a You Only Look Once (YOLO) or Single Shot Multibox Detector (SSD) structure.
- the learning model may be implemented as hardware, software, or a combination of hardware and software, and when part or all of the learning model is implemented as software, one or more instructions constituting the learning model may be stored in a memory.
- the autofluorescence image evaluation apparatus 200 is related to opacity or cataract grade of the eye to be examined based on a result of comparing gray levels of autofluorescence image portions corresponding to the first and second regions of the analysis filter. information can be determined.
- Images 911, 921, 931, and 941 captured based on the analysis filter (FIGS. 6 (c) and 11), which are embodiments, can be checked.
- the autofluorescence image evaluation apparatus 200 receives the images 911, 921, 931, and 941 captured based on the analysis filter (FIG. 6(c) and FIG. 11) and receives a portion of the autofluorescence image corresponding to the first region.
- a difference between the gray level of (913, 923, 933, 943) and the gray level of the portion (913, 923, 933, 943) of the autofluorescence image corresponding to the second region is determined, and the opacity of the eye to be examined is determined based on the difference. or information related to cataract grade can be determined.
- the brightness due to autofluorescence increases in portions 913, 923, 933, and 943 of the autofluorescence image corresponding to the second region in the subject eye having a higher opacity based on LOCS. .
- the autofluorescence image evaluation apparatus 200 recognizes the optic nerve or blood vessel in the autofluorescence image by a machine learning-based learning model, and the autofluorescence image corresponding to the first region that does not overlap with the optic nerve or blood vessel region
- the gray level of the part of the autofluorescence image corresponding to the part and the second part may be analyzed.
- the learning model may be a model learned with an image in which an optic nerve or blood vessel is labeled in an autofluorescence image.
- the autofluorescence image evaluation apparatus 200 provides a gray level of pixels that do not overlap with an optic nerve or blood vessel region in a portion of an autofluorescence image corresponding to a first region and a portion of an autofluorescence image corresponding to a second region. can be analyzed.
- gray levels of a plurality of parts corresponding to the second part in the autofluorescence image may be analyzed.
- the degree of cataract may be quantitatively evaluated based on a difference in gray scale values in an image portion corresponding to two figures corresponding to the second portion of the analysis filter in the autofluorescence image. That is, in the autofluorescence image, a gray level difference between a region corresponding to a figure located at the center of the filter unit of the analysis filter and a region corresponding to the figure located outside the filter unit may be analyzed.
- the present disclosure described above can be implemented as computer readable codes in a medium on which a program is recorded.
- the computer-readable medium includes all types of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable media include Hard Disk Drive (HDD), Solid State Disk (SSD), Silicon Disk Drive (SDD), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. there is Also, the computer may include a processor of each device.
- the program may be specially designed and configured for the present disclosure, or may be known and usable to those skilled in the art in the field of computer software.
- Examples of programs may include not only machine language codes generated by a compiler but also high-level language codes that can be executed by a computer using an interpreter or the like.
- This invention is the result of research conducted with the support of Korea University.
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Abstract
Description
Claims (19)
- 미리 설정된 광학 경로를 통해 피검안을 조명하는 광원;상기 광원의 조명에 따라 적어도 일부분이 자가 형광으로 발광된 상기 피검안을 촬영하는 영상 센서; 및상기 영상 센서와 상기 피검안 사이에 배치된 필터를 포함하고,상기 필터는 서로 광 투과도가 다른 복수의 부위를 포함하는,자가 형광 촬영 장치.
- 제1 항에 있어서,상기 영상 센서는,상기 광원의 조명에 의해서 발생한 상기 피검안의 자가 형광이 상기 필터를 통과하여 입사하도록 설정된,자가 형광 촬영 장치.
- 제1 항에 있어서,상기 필터는,제1 부위 및 상기 제1 부위보다 광 투과도가 낮은 복수의 도형이 형성된 제2 부위를 포함하는,자가 형광 촬영 장치.
- 제3 항에 있어서,상기 제2 부위는 서로 이격되어 배치된 복수의 상기 도형을 포함하고, 복수의 상기 도형은 상하 대칭 또는 좌우 대칭되는 형태인,자가 형광 촬영 장치.
- 제3 항에 있어서,상기 제2 부위는 복수의 링(ring) 형상 및 내부가 균일한 광 투과도를 갖는 복수의 원(circle) 형상의 상기 도형을 포함하는,자가 형광 촬영 장치.
- 제3 항에 있어서,상기 제2 부위는 내부가 균일한 광 투과도를 갖는 복수의 사각 형상의 상기 도형을 포함하는,자가 형광 촬영 장치.
- 제6 항에 있어서,복수의 사각 형상의 상기 도형 중 적어도 두 개는 서로 면적이 다른,자가 형광 촬영 장치.
- 제7 항에 있어서,복수의 사각 형상의 상기 도형 중 적어도 일부는 상기 필터의 중심부에 근접한 상기 도형보다 주변부에 근접한 상기 도형의 면적이 더 넓은,자가 형광 촬영 장치.
- 제6 항에 있어서,복수의 사각 형상의 상기 도형 중 적어도 두 개는 가로와 세로의 비율이 서로 다른,자가 형광 촬영 장치.
- 프로세서; 및상기 프로세서와 전기적으로 연결되고, 상기 프로세서에서 수행되는 적어도 하나의 코드(code)가 저장되는 메모리를 포함하고,상기 메모리는 상기 프로세서로 하여금 피검안의 자가 형광 영상을 분석하여 상기 피검안의 혼탁도 또는 백내장 등급과 관련된 정보를 결정하도록 야기하는 코드를 저장하고,상기 자가 형광 영상은 광원의 조명에 의해서 발생한 상기 피검안의 자가 형광이 영상 센서와 상기 피검안 사이에 배치되고, 서로 광 투과도가 다른 복수의 부위를 포함하는 필터를 통과하여 입사한 상기 영상 센서의 출력에 기반하여 생성된 영상인,자가 형광 영상 평가 장치.
- 제10 항에 있어서,상기 메모리는 상기 프로세서로 하여금,상기 자가 형광 영상에서 상기 필터의 서로 광 투과도가 다른 복수의 부위에 대응하는 복수의 영상 부위의 그레이 레벨을 비교한 결과에 기반하여 상기 혼탁도 또는 백내장 등급과 관련된 정보를 결정하도록 야기하는 코드를 더 저장하는,자가 형광 영상 평가 장치.
- 제11 항에 있어서,상기 자가 형광 영상은 상기 필터의 제1 부위 및 상기 제1 부위보다 광 투과도가 낮은 복수의 도형이 형성된 제2 부위에 각각 대응하는 제1 영상 부위 및 제2 영상 부위를 포함하고,상기 메모리는 상기 프로세서로 하여금 상기 제1 영상 부위 및 상기 제2 영상 부위의 그레이 레벨을 비교한 결과에 기반하여 상기 혼탁도 또는 백내장 등급과 관련된 정보를 결정하도록 야기하는 코드를 더 저장하는,자가 형광 영상 평가 장치.
- 제12 항에 있어서,상기 메모리는 상기 프로세서로 하여금,상기 자가 형광 영상에서 시신경 또는 혈관을 인식하고, 상기 시신경 또는 상기 혈관이 존재하지 않는 상기 제1 영상 부위 및 상기 제2 영상 부위의 그레이 레벨을 비교한 결과에 기반하여 상기 혼탁도 또는 백내장 등급과 관련된 정보를 결정하거나, 또는 상기 제1 영상 부위 및 상기 제2 영상 부위 중 상기 시신경 또는 상기 혈관이 존재하지 않는 부위의 그레이 레벨을 비교한 결과에 기반하여 상기 혼탁도 또는 백내장 등급과 관련된 정보를 결정하도록 야기하는 코드를 더 저장하는,자가 형광 영상 평가 장치.
- 제12 항에 있어서,상기 메모리는 상기 프로세서로 하여금,상기 제1 영상 부위 및 상기 제2 영상 부위의 그레이 레벨의 차이에 기반하여 상기 혼탁도 또는 백내장 등급과 관련된 정보를 결정하도록 야기하는 코드를 더 저장하는,자가 형광 영상 평가 장치.
- 프로세서가, 미리 설정된 광학 경로를 통해 피검안을 조명하도록 광원을 발광시키는 단계; 및상기 프로세서가 영상 센서를 제어하여 상기 광원의 조명에 따라 적어도 일부분이 자가 형광으로 발광된 상기 피검안을 촬영하는 단계를 포함하고,상기 피검안을 촬영하는 단계는,서로 광 투과도가 다른 복수의 부위를 포함하는 필터를 통과하고 상기 영상 센서에 입사한 상기 피검안의 자가 형광에 기반하여 상기 영상 센서가 출력 신호를 생성하는 단계를 포함하는,자가 형광 촬영 장치의 동작 방법.
- 제15 항에 있어서,상기 프로세서가, 상기 필터의 위치를 확인하는 단계;상기 프로세서가, 촬영 모드를 확인하는 단계; 및상기 프로세서가, 상기 필터의 위치와 상기 촬영 모드가 불 일치하는 경우 메시지를 출력하는 단계를 더 포함하는,자가 형광 촬영 장치의 동작 방법.
- 제15 항에 있어서,상기 프로세서가, 상기 영상 센서의 상기 출력 신호에 기반하여 자가 형광 안저 영상을 생성하는 단계; 및상기 프로세서가, 상기 필터에 기반한 촬영을 의미하는 영상 종류 정보를 상기 자가 형광 안저 영상에 추가하는 단계를 더 포함하는,자가 형광 촬영 장치의 동작 방법.
- 상기 프로세서가, 피검안의 자가 형광 영상의 적어도 일부를 제공 받는 단계; 및상기 프로세서가, 상기 자가 형광 영상을 분석하여 상기 피검안의 혼탁도 또는 백내장 등급과 관련된 정보를 결정하는 단계를 포함하고,상기 자가 형광 영상은 광원의 조명에 의해서 발생한 상기 피검안의 자가 형광이 영상 센서와 상기 피검안 사이에 배치되고, 서로 광 투과도가 다른 복수의 부위를 포함하는 필터를 통과하여 입사한 상기 영상 센서의 출력에 기반하여 생성된 영상인,자가 형광 영상 평가 장치의 평가 방법.
- 제18 항에 있어서,상기 정보를 결정하는 단계는,상기 자가 형광 영상에서 상기 필터의 서로 광 투과도가 다른 복수의 부위에 대응하는 복수의 영상 부위의 그레이 레벨을 비교한 결과에 기반하여 상기 혼탁도 또는 백내장 등급과 관련된 정보를 결정하는 단계를 포함하는,자가 형광 영상 평가 장치의 평가 방법.
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| EP22904514.1A EP4445828A4 (en) | 2021-12-07 | 2022-11-17 | AUTOFLUORESCENCE IMAGING DEVICE AND ITS OPERATING METHOD, AUTOFLUORESCENCE IMAGE EVALUATION DEVICE AND ITS EVALUATION METHOD |
| JP2024534416A JP7735009B2 (ja) | 2021-12-07 | 2022-11-17 | 自家蛍光撮影装置 |
| US18/717,395 US20250040806A1 (en) | 2021-12-07 | 2022-11-17 | Autofluorescence imaging device and operation method thereof, autofluorescence image evaluation device and evaluation method thereof |
| JP2025136793A JP2025170323A (ja) | 2021-12-07 | 2025-08-20 | 自家蛍光映像評価装置 |
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| KR1020220026607A KR102773961B1 (ko) | 2021-12-07 | 2022-03-02 | 자가 형광 촬영 장치 및 그 동작 방법, 자가 형광 영상 평가 장치 및 그 평가 방법 |
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| EP (1) | EP4445828A4 (ko) |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6478424B1 (en) * | 1998-07-31 | 2002-11-12 | Yeda Research And Development Co., Ltd. | Non-invasive imaging of retinal function |
| JP2004329890A (ja) * | 2003-04-15 | 2004-11-25 | Kowa Co | 眼科撮影装置 |
| KR20100106965A (ko) * | 2007-11-13 | 2010-10-04 | 더 리젠츠 오브 더 유니버시티 오브 미시건 | 눈과 관련된 질환을 검출하기 위한 방법 및 장치 |
| JP5232221B2 (ja) * | 2007-05-01 | 2013-07-10 | スパイド,リチャード | 眼底カメラを使用する自己蛍光写真撮影法 |
| JP2020075139A (ja) * | 2014-09-30 | 2020-05-21 | 株式会社トプコン | 眼科装置 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19907479A1 (de) * | 1999-02-15 | 2000-08-17 | Univ Schiller Jena | Verfahren und Vorrichtung zur Messung unterschiedlicher Fluoreszenzspektren an einem Objekt |
| JP2008035944A (ja) * | 2006-08-02 | 2008-02-21 | Topcon Corp | 眼科撮影システム |
| GB0903274D0 (en) * | 2009-02-26 | 2009-04-08 | Edinburgh Instr | Fluoreence method and system |
| JP5414369B2 (ja) | 2009-06-01 | 2014-02-12 | キヤノン株式会社 | 眼底カメラ及び制御方法 |
| US8989848B2 (en) * | 2010-11-05 | 2015-03-24 | Freedom Meditech, Inc. | Apparatus and method for non-invasively detecting diseases that affect structural properties in biological tissues |
| JP6057060B2 (ja) * | 2012-08-29 | 2017-01-11 | 株式会社ニデック | 眼底撮影装置 |
| JP6357851B2 (ja) * | 2013-05-01 | 2018-07-18 | 株式会社ニデック | 眼科装置 |
| US20150238074A1 (en) * | 2014-02-24 | 2015-08-27 | Image Technologies Corporation | Autofluorescence imaging of macular pigment: image quality criteria and corrections |
| CN107126189B (zh) * | 2016-05-31 | 2019-11-22 | 瑞尔明康(杭州)医疗科技有限公司 | 用于视网膜成像的光学组件和视网膜成像设备 |
| JP6775337B2 (ja) * | 2016-06-28 | 2020-10-28 | 株式会社トプコン | 眼科装置 |
-
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-
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- 2025-02-13 KR KR1020250018504A patent/KR20250029076A/ko active Pending
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6478424B1 (en) * | 1998-07-31 | 2002-11-12 | Yeda Research And Development Co., Ltd. | Non-invasive imaging of retinal function |
| JP2004329890A (ja) * | 2003-04-15 | 2004-11-25 | Kowa Co | 眼科撮影装置 |
| JP5232221B2 (ja) * | 2007-05-01 | 2013-07-10 | スパイド,リチャード | 眼底カメラを使用する自己蛍光写真撮影法 |
| KR20100106965A (ko) * | 2007-11-13 | 2010-10-04 | 더 리젠츠 오브 더 유니버시티 오브 미시건 | 눈과 관련된 질환을 검출하기 위한 방법 및 장치 |
| KR101643953B1 (ko) | 2007-11-13 | 2016-07-29 | 더 리젠츠 오브 더 유니버시티 오브 미시건 | 눈과 관련된 질환을 검출하기 위한 방법 및 장치 |
| JP2020075139A (ja) * | 2014-09-30 | 2020-05-21 | 株式会社トプコン | 眼科装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4445828A4 |
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