EP0100483A2 - Matériau composite pour l'enregistrement d'une image obtenue par rayonnement - Google Patents
Matériau composite pour l'enregistrement d'une image obtenue par rayonnement Download PDFInfo
- Publication number
- EP0100483A2 EP0100483A2 EP83107078A EP83107078A EP0100483A2 EP 0100483 A2 EP0100483 A2 EP 0100483A2 EP 83107078 A EP83107078 A EP 83107078A EP 83107078 A EP83107078 A EP 83107078A EP 0100483 A2 EP0100483 A2 EP 0100483A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- radiation image
- light
- phosphor layer
- panel
- composite material
- 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.)
- Withdrawn
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Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—HANDLING OF PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K4/00—Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/16—X-ray, infrared, or ultraviolet ray processes
Definitions
- This invention relates to a composite material for storage of a radiation image, which comprises a radiation image storage panel.
- radiographic method wherein an X-ray photographic film is exposed to a radiation passing through an object to record an X-ray transmission image of the object for viewing, particularly for diagnostic purposes.
- intensifying screens are used together with the X-ray photographic film in order to intensify the sensitivity to X-rays.
- the radiography is conducted by interleaving the X-ray photographic film between two intensifying screens, loading the obtained combination in a light-shielding cassette, and loading the cassette in an image recording stage.
- U.S. Patent No. 4,239,968 One novel method for recording and reproducing a radiation image without using the X-ray photographic film is disclosed in U.S. Patent No. 4,239,968.
- a radiation image storage panel comprising a stimulable phosphor which emits light when stimulated by an electromagnetic wave selected from among visible light and infrared rays after exposure to a radiation.
- the term "radiation” as used herein means electromagnetic wave or corpuscular radiation such as X-rays, a-rays, ⁇ -rays, ⁇ -rays, high energy neutron rays, cathode rays, vacuum ultraviolet rays, ultraviolet rays, or the like.1
- the method comprises the steps of (i) causing the stimulable phosphor of the panel to absorb radiation energy corresponding to the amount of radiation passing through an object, thereby to form a latent radiation image in the stimulable phosphor, (ii) scanning the panel with an electromagnetic wave such as visible light or infrared rays (hereinafter referred to as "stimulating rays") to sequentially release the radiation energy stored in the panel as light emission, and (iii) detecting the emitted light and converting it into an image.
- an electromagnetic wave such as visible light or infrared rays
- the radiation image storage panel employed in the aforesaid method for recording and reproducing a radiation image has a phosphor layer comprising an appropriate binder and a stimulable phosphor dispersed therein.
- the phosphor layer can by itself form the radiation image storage panel.
- the phosphor layer is provided on an appropriate substrate to form the radiation image storage panel.
- a protective film for physically and chemically protecting the phosphor layer is provided on the phosphor layer on the side opposite to. the substrate.
- a prime-coating layer is sometimes formed between the phosphor layer and the substrate for the purpose of increasing adhesion therebetween
- a light-reflecting layer is sometimes formed between the phosphor layer and the substrate to improve the sensitivity of the panel
- a light-absorbing layer is sometimes formed between the phosphor layer and the substrate to improve the sharpness of the image obtained by the panel.
- the phosphor layer is sometimes colored, or white particles are sometimes dispersed in the phosphor layer.
- a radiation image is stored in the phosphor layer itself of the radiation image storage panel.
- the panel is not combined with an X-ray photographic film as in the case of the intensifying screens. Therefore, this method does not present the aforesaid problem due to loose contact of the X-ray photographic film with the intensifying screens. Accordingly, this method can provide a radiation image having high image quality even when image recording is conducted without using the cassette.
- the phosphor layer of the panel should be shielded from light, as in the case of the conventional X-ray photographic film, between the image recording step and the image read-out step so that the phosphor layer will not be exposed to stimulating rays contained in natural light.
- the panel when the radiation image storage panel is used for image recording without using the cassette, the panel must be carefully handled, for example in a dark room, so that the phosphor layer of the panel will not be exposed to stimulating rays between the image recording and the image read-out.
- the primary object of the present invention is to provide a composite material for storage of a radiation image, which can be easily handled even in a light room when image recording is conducted without using a cassette.
- Another object of the present invention is to provide a composite material for storage of a radiation image, which is suitable for obtaining a radiation image having a high image quality.
- the composite material for storage of a radiation image in accordance with the present invention comprises a radiation image storage panel provided with a phosphor layer containing a stimulable phosphor, and a light-shielding bag for enclosing said radiation image storage panel, thereby shielding the phosphor layer of said panel from light.
- the panel Since a radiation image is recorded in the phosphor layer itself of the radiation image storage panel, the panel does not present the problem due to loose contact of the X-ray photographic film with the intensifying screens when they are used in combination with each other as in the conventional method. Therefore, in the present invention, it is sufficient that the radiation image storage panel be simply enclosed in the light-shielding bag so that the phosphor layer is shielded from light.
- the light-shielding bag need not be evacuated as in the case of the conventional combination of the X-ray photographic film with the intensifying screens. Accordingly, the construction of the light-shielding bag employed in the present invention is markedly simpler than the construction of the light-shielding bag (holder) used for the conventional combination of the X-ray photographic film with the intensifying screens.
- the radiation image storage panel can be handled even in a light room and, therefore, it is very easy to handle.
- the light-shielding bag constituting the composite material for storage of a radiation image in accordance with the present invention is advantageous also for protecting the radiation image storage panel from dust, and can prevent the image quality from being deteriorated due to dust which might otherwise stick to the radiation image storage panel and interrupt or scatter the stimulating rays irradiated onto the panel or the light emitted from the panel when the panel is exposed to stimulating rays.
- the light-shielding bag constituting the composite material for storage of a radiation image in accordance with the present invention may be made of any material that interrupts the stimulating rays but is permeable to a radiation image of an object formed by a radiation passing through the object.
- a radiation image storage panel 1 is contained in a light-shielding bag 2 to shield the phosphor layer of the radiation image storage panel 1 from light.
- the light-shielding bag 2 consists of an upper sheet 2a and a lower sheet 2b. Inner edge portions 3a and 3b of the upper sheet 2a and the lower sheet 2b, respectively, are provided with flat fasteners.
- the flat fasteners are flat tapes of the press-on, split-off type, generally called “magic tapes" and provided with fine fibrous joining members which join with each other.
- the flat fasteners are hereinafter referred to as "magic tapes".
- the edge portions of the upper sheet 2a and the lower sheet 2b of the light-shielding bag 2 are pressed against each other to adhere the magic tapes 3a and 3b to each other.
- the radiation image storage panel 1 is contained in the light-shielding bag 2 in a condition shielded from light.
- the upper sheet 2a and the lower sheet 2b are separated from each other, and the radiation image storage panel 1 is taken out of the light-shielding bag 2 to conduct read-out of the radiation image stored in the radiation image storage panel 1.
- the light-shielding bag 2 is made of a material which interrupts the stimulating rays but is permeable to a radiation passing through the object, for example, paper or plastics such as vinylchloride, polypropylene, polyethylene, polyester, NYLON colored in black, or the like.
- the light-shielding bag 2 can be opened and closed by use of the magic "-apes, the light-shielding bag 2 can be used repeatedly. Since the radiation image storage panel 1 is used repeatedly, it is advantageous that the light-shielding bag 2 also be reusable.
- Figure 2 showing another embodiment of the composite material for storage of a radiation image in accordance with the present invention
- four edge portions of a light-shielding bag 2' are completely bonded when the radiation image storage panel 1 is loaded therein.
- the light-shielding bag 2' is broken, and the radiation image storage panel 1 is taken out of the light-shielding bag 2', which is then discarded.
- the radiation image storage panel 1 constituting the composite material for storage of a radiation image in accordance with the present invention may comprise a substrate and a stimulable phosphor layer provided on the substrate, or may simply consist of a self-supporting stimulable phosphor layer alone.
- the material of the substrate and the stimulable phosphor dispersed in a binder to form the phosphor layer any material and any phosphor that are known to be usable for the radiation image storage panel may be used.
- the substrate should preferably be made of a flexible material since a panel comprising the flexible substrate can be bent according to the shape of the object.
- a protective film for physically and chemically protecting the phosphor layer is provided on the phosphor layer on the side opposite to the substrate.
- a prime-coating layer may be formed between the phosphor layer and the substrate for the purpose of increasing adhesion therebetween, or a light-reflecting layer may be formed between the phosphor layer and the substrate to improve the sensitivity of the panel.
- a light-absorbing layer may be formed between the phosphor layer and the substrate to improve the sharpness of the image obtained by the panel.
- the phosphor layer may be colored, or white particles may be dispersed in the phosphor layer.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- General Physics & Mathematics (AREA)
- Conversion Of X-Rays Into Visible Images (AREA)
- Laminated Bodies (AREA)
- Radiography Using Non-Light Waves (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP127233/82 | 1982-07-21 | ||
| JP12723382A JPS5917200A (ja) | 1982-07-21 | 1982-07-21 | 放射線像変換用複合体 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0100483A2 true EP0100483A2 (fr) | 1984-02-15 |
| EP0100483A3 EP0100483A3 (fr) | 1985-06-19 |
Family
ID=14955015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP83107078A Withdrawn EP0100483A3 (fr) | 1982-07-21 | 1983-07-19 | Matériau composite pour l'enregistrement d'une image obtenue par rayonnement |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0100483A3 (fr) |
| JP (1) | JPS5917200A (fr) |
| DE (1) | DE100483T1 (fr) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0175578A3 (en) * | 1984-09-18 | 1986-11-12 | Konishiroku Photo Industry Co. Ltd. | Radiographic image storage panel and its preparing process |
| US5576552A (en) * | 1992-10-27 | 1996-11-19 | Orion-Yhtyma Oy | Image plate for intraoral dental radiography |
| WO1997042877A1 (fr) * | 1996-05-13 | 1997-11-20 | University Of Massachusetts Medical Center | Systeme d'imagerie radiographique quantitative |
| US20130277251A1 (en) * | 2012-04-24 | 2013-10-24 | Fujifilm Corporation | Cassette for containing accumulative fluorescent sheet |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6450000A (en) * | 1987-08-19 | 1989-02-27 | Fuji Photo Film Co Ltd | Accumulation type fluorescent material sheet complex |
| JPH04104135A (ja) * | 1990-08-23 | 1992-04-06 | Fuji Photo Film Co Ltd | 放射線画像読取装置 |
| JP4882070B2 (ja) * | 2004-10-04 | 2012-02-22 | 国立大学法人名古屋大学 | 放射性同位元素検出用プローブ |
| JP7765577B1 (ja) * | 2024-09-11 | 2025-11-06 | 北海道電力株式会社 | 柱状構造物の検査システム及び検査方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2214613C3 (de) * | 1972-03-25 | 1978-10-05 | Andreas 8420 Kelheim Schmitzer | Vakuumkassette für Röntgenfilme |
-
1982
- 1982-07-21 JP JP12723382A patent/JPS5917200A/ja active Granted
-
1983
- 1983-07-19 DE DE1983107078 patent/DE100483T1/de active Pending
- 1983-07-19 EP EP83107078A patent/EP0100483A3/fr not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0175578A3 (en) * | 1984-09-18 | 1986-11-12 | Konishiroku Photo Industry Co. Ltd. | Radiographic image storage panel and its preparing process |
| US5576552A (en) * | 1992-10-27 | 1996-11-19 | Orion-Yhtyma Oy | Image plate for intraoral dental radiography |
| WO1997042877A1 (fr) * | 1996-05-13 | 1997-11-20 | University Of Massachusetts Medical Center | Systeme d'imagerie radiographique quantitative |
| US20130277251A1 (en) * | 2012-04-24 | 2013-10-24 | Fujifilm Corporation | Cassette for containing accumulative fluorescent sheet |
| US9040941B2 (en) * | 2012-04-24 | 2015-05-26 | Fujifilm Corporation | Cassette for containing accumulative fluorescent sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0312719B2 (fr) | 1991-02-20 |
| EP0100483A3 (fr) | 1985-06-19 |
| JPS5917200A (ja) | 1984-01-28 |
| DE100483T1 (de) | 1984-06-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): DE FR NL |
|
| EL | Fr: translation of claims filed | ||
| TCNL | Nl: translation of patent claims filed | ||
| DET | De: translation of patent claims | ||
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Designated state(s): DE FR NL |
|
| 17P | Request for examination filed |
Effective date: 19850806 |
|
| 17Q | First examination report despatched |
Effective date: 19860812 |
|
| R17C | First examination report despatched (corrected) |
Effective date: 19870506 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19871116 |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: TAKANO, MASAOC/O FUJI PHOTO FILM CO., LTD. |