WO2012159948A1 - Fantôme de mesure - Google Patents

Fantôme de mesure Download PDF

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Publication number
WO2012159948A1
WO2012159948A1 PCT/EP2012/059095 EP2012059095W WO2012159948A1 WO 2012159948 A1 WO2012159948 A1 WO 2012159948A1 EP 2012059095 W EP2012059095 W EP 2012059095W WO 2012159948 A1 WO2012159948 A1 WO 2012159948A1
Authority
WO
WIPO (PCT)
Prior art keywords
measuring
phantom
capsule
vessel
endoscopy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2012/059095
Other languages
German (de)
English (en)
Inventor
Nadine Kuhnert
Stefan FÖRTSCH
Henrik Keller
Rainer Kuth
Heiko Köpping
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2012159948A1 publication Critical patent/WO2012159948A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00002—Operational features of endoscopes
    • A61B1/00057—Operational features of endoscopes provided with means for testing or calibration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00002—Operational features of endoscopes
    • A61B1/00025—Operational features of endoscopes characterised by power management
    • A61B1/00027—Operational features of endoscopes characterised by power management characterised by power supply
    • A61B1/00029—Operational features of endoscopes characterised by power management characterised by power supply externally powered, e.g. wireless
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00147—Holding or positioning arrangements
    • A61B1/00158—Holding or positioning arrangements using magnetic field
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
    • A61B1/041—Capsule endoscopes for imaging

Definitions

  • the invention relates to a measuring phantom for a system for
  • MGCE For examining hollow organs of a patient, MGCE is known, for example, from DE 101 42 253 C1: an endoscopy capsule generally swallowed by the patient is magnetically navigable in its gastrointestinal tract. The patient is stored within a magnet system which generates a magnetic field. On the endoscopic capsule a specific force or torque can be exerted by means of the magnetic field, so that these controls berüh ⁇ rungslos can be moved in the patient.
  • Such a measuring phantom allows to carry out an economically inexpensive test procedure in which all components of the MGCE system are detected. A statement about the entire MGCE system can be logged or made repeatable.
  • the measurement phantom or the test method described above enables all people involved in the situation to reach without any additional special knowledge to Beur ⁇ distribution of MGCE system.
  • the measurement phantom provides assistance in locating sources of error throughout the MGCE system and correcting for corrections.
  • the measuring phantom makes it possible to check all functions of the MGCE system.
  • the various measuring structures are then in particular optically distinguishable, for example correspondingly numbered.
  • On the basis of the captured by the endoscopy capsule camera image is so distinguishable, which of the measuring structures is shown. Since the position of the measuring structures in the vessel is known, it can be determined in which direction the camera actually looks. The desired position may be selected relative to the vessel, but also relative to the magnet system. It makes sense then that the vessel can be placed at a known location in the magnet system. For this purpose, for example, a mark can be placed on the patient table on which the vessel with defined dimensions must be placed in a defined manner.
  • the measuring phantom also contains an endoscopy capsule, which can be permanently supplied with energy.
  • the endoscopy capsules designed for use in the patient are equipped with batteries which, however, are not changeable or rechargeable. Endoscopy capsules are thus disposable capsules.
  • a permanently energizable endoscopy capsule is then no Wegwerfar ⁇ Tikel and belongs to the measurement phantom. This is for instance realized that with this endoscopic capsule a flu- idêtr battery change is possible or containing one at ⁇ loadable battery.
  • Such endoscopy capsule is then used to long-term operation in the vessel eg to Schulungszwe ⁇ CKEN because their service life is not limited by the battery capacity.
  • the measurement phantom contains a separate from the capsule endoscopy energy source and a leading from the power source to the endoscopic capsule feed.
  • the power supply or source is usually outside the vessel. This embodiment is particularly suitable for the permanent use of the endoscopy capsule for training or demonstration purposes, even charging a capsule battery is avoided.
  • the actual check or measurement on the MGCE system then takes place, for example, on the basis of clearly defined maneuvers that are to be performed with the endoscopy capsule in the vessel.
  • the images provided by the camera result ⁇ be considered and evaluated or stored where ⁇ can take place at the storage example in a zugeordne- th the MGCE system image system.
  • MGCE system is available. All materials of the measurement phantom used are locally safe recyclable, which is why a so-called "eco-friendly" measuring phantom results. With the help of the measuring Phantoms the functions of MGCE- system are verifiable.
  • a Mathprü ⁇ fung the magnet control by traceable maneuver the endoscopy capsule. it can be done a quality androiskon ⁇ trolls of all participating components of the imaging chain. They are: two cameras and associated
  • receivers, converters, PCs, monitors, lines and interfaces can be tested here.
  • Color reproduction, image sharpness ⁇ , contrast and brightness of the camera can be con ⁇ trolled or checked.
  • a statement by Tole tolerances or deviations is possible.
  • Recordable target / actual comparisons can be carried out. The result is ei ⁇ ne assistance in troubleshooting and MGCE system tests after correction or maintenance work on MGCE system.
  • the invention is characterized by a defined, fillable with liquid hollow body with waterproof closable or solid lid.
  • the measurement phantom has sealable, waterproof filling and drain valves, so ⁇ such as waterproof guided connecting cables for the permanently energy supplied endoscopic capsule with aorsversor ⁇ supply in particular from the outside, provided a waterproof battery-rie LCD not is realized on the endoscopic capsule.
  • Measurement structures or strips with a print are used to test the resolution, brightness, contrast, sharpness and color reproduction of the cameras.
  • the application of the measuring strips in a defined geometric arrangement in the vessel serves to check the movement accuracy of the endoscopy capsule as a function of the magnetic fields and the control of the MGCE system. In particular, this results in a possibility of testing the MGCE system, e.g. at the customer.
  • the well-known position of the endoscopy capsule in relation to the magnet system and the vessel can be accomplished by the vessel in one
  • FIG. 1 shows a MGCE system with a measuring phantom
  • FIG. 2 shows a measuring structure from FIG. 1 in detail.
  • FIG. 1 shows a system for carrying out a magnetically guided capsule endoscopy, that is to say an MGCE system 2.
  • This essentially comprises a patient table 4 shown in section and symbolically indicated magnetic coils 6. These serve to generate a magnetic field 8, which is also shown only symbolically ⁇ force or torque exerted on an endoscopic capsule 10.
  • an unillustrated patient would rest on the patient's table 4 and the endoscopic capsule 10 navi ⁇ yaws in the gastrointestinal tract.
  • a system test is performed on the MGCE system 2.
  • the MGCE system 2 is not in regular patient operation but in a test mode in which its system functionality is to be checked.
  • the endoscopy capsule 10 contains two symbolically indicated cameras 12a, b, which serve to receive images 14 from the interior of the patient.
  • the MGCE system 2 also contains an image processing unit 16 which receives the images 14 transmitted by radio from the endoscopy capsule 10, processes them and finally displays them on a monitor 18.
  • the spark gap is symbolized in Fig. 1 by an arrow gestrichel ⁇ th.
  • FIG. 1 also shows a measuring phantom 20 serving for the MGCE system 2 with a vessel 22, which simulates a hollow organ of a patient, in this case the stomach, roughly cuboid.
  • the vessel 22 is completely closed by a watertight sealable filling opening 24 with a liquid 26, in Example, water with an addition of detergent to Reduzie ⁇ tion of the surface tension, filled.
  • the vessel 22 also has a watertightly closable outlet opening 28 for later discharge of the liquid 26 after completion of all tests.
  • the endoscopy capsule 10 belongs to the measuring phantom 20.
  • the endoscopy capsule 10 is connected via connecting lines 34, which in turn via
  • Bushings 36 are led out of the vessel 22 waterproof, connected to a power source 38.
  • the endoscopy kapsei 10 has this specially mounted Kontak ⁇ tierungen 42.
  • the power source 38 accepts only the supply of the endoscopy capsule 10 with energy, but none ⁇ lei data transfer function and thus only replaces an otherwise seen internally in a regular, at a endoscopic examination used endoscopy capsule, which is swallowed by a patient, existing - limited in their energy ⁇ amount and therefore their use time severely ⁇ kende - battery. Otherwise, the endoscopy capsule 10 and a regular capsule, also in terms of their functionality, are identical.
  • all of the vessel walls 40 are optically transparent, so that it is always possible to make an obvious inspection of the endoscopy capsule 10.
  • the actual location and orientation of the Endoskopieapsel can be easily determined.
  • chap ⁇ selfunktionen can be checked visually for, for example, a drug release or the extension of a gripper.
  • the Endosko ⁇ piekapsel occupies 10 different target positions P, of which Fig.l are indicated only two dashed lines.
  • the Sollpo ⁇ P sitions containing a certain spatial position, and a certain orientation in space, thus orientation of the endoscopic capsule and the capsule longitudinal axis.
  • respective desired viewing directions B are automatically obtained for the cameras 12a, b.
  • the measuring structures 32 are now arranged in the interior of the vessel 22 such that they each have a defined position relative to the desired viewing direction B. In other words, it is known for each desired position P, where in a then taken with the cameras 12a, b image 14, the respective measuring structure 32 is shown.
  • the game ⁇ Mestechnik in the region of the intersection points of the desired viewing directions B are disposed at vessel walls 40 of the vessel 22nd
  • FIG. 2 shows a measuring structure 32 in detail.
  • This contains black-and-white structures 44 in the form of parallel black bars 46a, b on a white background.
  • the bars 46a, b also each have different weights of jeweili ⁇ gen expansion S i, 2, ... on.
  • the bars 46a, b thus form structures of different dimensions S i, 2,.
  • the bars 46a, b as elements also have mutually administrat Kunststoffli ⁇ che distances Ai, 2 .
  • the Mes Vietnamese 32 also includes ei ⁇ ne color scale 48 with twenty-two different colors, which are alphanumeric Wegnumme- riert by being required numbers. Furthermore, different numbers 50 are printed on the measuring structure 32.
  • the inner wall of the vessel 22 thus carries clearly identifiable marks, so that by storing the images taken by the endoscopy capsule a unique archive of the capsule type and Orientierun ⁇ gen is given at all times.
  • Each of the measuring structures 32 also carries a different identifier 52, here the identifier "OX" for the first measuring structure 32.
  • the other measuring structures 32 are identified clearly identifiable by identifiers 52 "IX", "2X”, etc.
  • a region 54 similar, but differently colored, parallel lines against a white background are also contained in the measurement structure 32.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biophysics (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Endoscopes (AREA)

Abstract

L'invention concerne un fantôme de mesure (20) pour un système (2) destiné à la mise en œuvre d'une endoscopie capsulaire à guidage magnétique, contenant un récipient (22) pouvant être rempli d'un liquide (26) dans lequel une capsule d'endoscopie (10) comprenant au moins une caméra (12a, b) peut être introduite et qui comprend au moins une structure de mesure (32) détectable optiquement par la caméra (12a, b), fixée sur une paroi intérieure (30) du récipient (22) pour le contrôle d'au moins un composant du système (2) sur la base d'images de la ou des structures de mesure (32) qui ont été enregistrées par la caméra (12a, b).
PCT/EP2012/059095 2011-05-20 2012-05-16 Fantôme de mesure Ceased WO2012159948A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011076182.9 2011-05-20
DE201110076182 DE102011076182A1 (de) 2011-05-20 2011-05-20 Messphantom

Publications (1)

Publication Number Publication Date
WO2012159948A1 true WO2012159948A1 (fr) 2012-11-29

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ID=46085630

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/059095 Ceased WO2012159948A1 (fr) 2011-05-20 2012-05-16 Fantôme de mesure

Country Status (2)

Country Link
DE (1) DE102011076182A1 (fr)
WO (1) WO2012159948A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10142253C1 (de) 2001-08-29 2003-04-24 Siemens Ag Endoroboter
DE10333572A1 (de) * 2002-07-23 2004-02-05 Pentax Corp. Kapselendoskop sowie Führungssystem und Haltevorrichtung hierfür
EP2135545A2 (fr) * 2008-06-19 2009-12-23 Olympus Medical Systems Corporation Système de guidage magnétique et procédé de guidage magnétique
EP2163187A2 (fr) * 2008-09-10 2010-03-17 Olympus Medical Systems Corporation Système de détermination d'adéquation de flottation et procédé pour déterminer l'adéquation de volume de flottation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4891535B2 (ja) * 2004-09-21 2012-03-07 オリンパス株式会社 医療装置誘導システム
US9017248B2 (en) * 2007-11-08 2015-04-28 Olympus Medical Systems Corp. Capsule blood detection system and method
CA2655001C (fr) * 2009-02-20 2015-11-24 Queen's University At Kingston Localisation de reperes par enregistrement a base d'intensite de modalites d'images

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10142253C1 (de) 2001-08-29 2003-04-24 Siemens Ag Endoroboter
DE10333572A1 (de) * 2002-07-23 2004-02-05 Pentax Corp. Kapselendoskop sowie Führungssystem und Haltevorrichtung hierfür
EP2135545A2 (fr) * 2008-06-19 2009-12-23 Olympus Medical Systems Corporation Système de guidage magnétique et procédé de guidage magnétique
EP2163187A2 (fr) * 2008-09-10 2010-03-17 Olympus Medical Systems Corporation Système de détermination d'adéquation de flottation et procédé pour déterminer l'adéquation de volume de flottation

Also Published As

Publication number Publication date
DE102011076182A1 (de) 2012-11-22

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