WO2014013771A1 - シンチレータパネル及び放射線検出器 - Google Patents
シンチレータパネル及び放射線検出器 Download PDFInfo
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- WO2014013771A1 WO2014013771A1 PCT/JP2013/061509 JP2013061509W WO2014013771A1 WO 2014013771 A1 WO2014013771 A1 WO 2014013771A1 JP 2013061509 W JP2013061509 W JP 2013061509W WO 2014013771 A1 WO2014013771 A1 WO 2014013771A1
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- WIPO (PCT)
- Prior art keywords
- glass substrate
- layer
- organic resin
- scintillator
- resin layer
- Prior art date
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/202—Measuring radiation intensity with scintillation detectors the detector being a crystal
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/3405—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of organic materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/2002—Optical details, e.g. reflecting or diffusing layers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/2018—Scintillation-photodiode combinations
- G01T1/20188—Auxiliary details, e.g. casings or cooling
- G01T1/20189—Damping or insulation against damage, e.g. caused by heat or pressure
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING 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
- G21K2004/02—Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens characterised by the external panel structure
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING 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
- G21K2004/04—Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens with an intermediate layer
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING 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
- G21K2004/10—Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens with a protective film
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/23—Sheet including cover or casing
- Y10T428/239—Complete cover or casing
Definitions
- the present invention relates to a scintillator panel and a radiation detector.
- Patent Document 1 As a conventional scintillator panel, for example, there is one described in Patent Document 1.
- a 0.05 mm glass substrate is used as a support for the scintillator layer.
- a cushioning material that relieves the force from the outside of the housing and a highly rigid member that is stiffer than the scintillator layer are disposed between the housing and the scintillator layer.
- a graphite substrate coated with a polyimide resin film or a polyparaxylylene film is used as a support. Furthermore, in the scintillator panel described in Patent Document 3, the entire surface of the substrate made of amorphous carbon or the like is covered with an intermediate film such as a polyparaxylylene film.
- a scintillator panel that is applied to a solid state detector such as a thin film transistor (TFT) panel is required to have flexibility that can satisfy the shape following property of the solid state detector. Further, if there is a difference between the thermal expansion coefficient of the TFT panel and the thermal expansion coefficient of the scintillator panel substrate, fine scratches on the scintillator panel substrate, or abnormal growth portions that occur when the scintillator layer 13 is formed by vapor deposition. This may cause a problem that a scratch generated between the TFT panel and the TFT panel moves with respect to the light receiving surface due to heat during operation, and the labor of calibration becomes complicated.
- TFT thin film transistor
- an ultrathin glass having a thickness of 150 ⁇ m or less as the substrate of the scintillator panel.
- the edge part (edge part) of glass is brittle with respect to an impact, and generation
- the present invention has been made to solve the above problems, and provides a scintillator panel that can ensure flexibility while preventing chipping and cracking of a glass substrate, and a radiation detector using the scintillator panel. For the purpose.
- a scintillator panel includes a glass substrate having a thickness of 150 ⁇ m or less having radiation transparency, a first organic resin layer formed so as to cover the entire surface of the glass substrate, A scintillator layer formed on one side of a glass substrate on which one organic resin layer is formed, and a moisture-resistant protection formed so as to cover the entire scintillator layer together with the glass substrate on which the first organic resin layer is formed And a layer.
- the first organic resin layer is formed so as to cover the entire surface of the glass substrate.
- a glass substrate is reinforced and generation
- stray light from the side surface of the glass substrate can be prevented, and the warpage of the glass substrate can be suppressed by forming the first organic resin layer on the entire surface.
- the first organic resin layer may be selected from polyparaxylylene and polyurea.
- a resin film layer is attached between the other surface side of the glass substrate on which the first organic resin layer is formed and the protective layer.
- the glass substrate can be further reinforced by the resin film layer.
- the internal stress of a scintillator layer can be canceled because the resin film layer exists in the other surface side of a glass substrate, and the curvature of a glass substrate can be suppressed more effectively.
- a resin film layer is attached between the one surface side of the glass substrate on which the first organic resin layer is formed and the scintillator layer.
- the glass substrate can be further reinforced by the resin film layer.
- the light transmission to the other side of the glass substrate is maintained, and the resolution can be maintained.
- the resin film layer may be selected from PET, PEN, COP, and PI.
- the second organic resin layer is formed so as to cover the other surface side and the side surface side of the glass substrate on which the first organic resin layer is formed.
- a glass substrate is further reinforced and generation
- the second organic resin layer is formed on the other surface side and the side surface side of the glass substrate, whereby the stray light prevention effect and the glass substrate warpage suppression effect can be further enhanced.
- the second organic resin layer is formed so as to cover one side and the side of the glass substrate on which the first organic resin layer is formed.
- a glass substrate is further reinforced and generation
- the second organic resin layer is formed on the other side and the side of the glass substrate, so that the stray light prevention effect is enhanced, while the light transmission to the other side of the glass substrate is maintained. , Can maintain the resolution.
- the second organic resin layer may be selected from silicon resin, urethane resin, epoxy resin, and fluorine resin.
- a radiation detector according to the present invention is characterized by comprising the above scintillator panel and a light receiving element arranged to face the scintillator layer on which the protective layer is formed.
- the first organic resin layer is formed so as to cover the entire surface of the glass substrate.
- a glass substrate is reinforced and generation
- stray light from the side surface of the glass substrate can be prevented, and the warpage of the glass substrate can be suppressed by forming the first organic resin layer on the entire surface.
- FIG. 1 is a cross-sectional view showing the configuration of the radiation detector according to the first embodiment of the present invention.
- the radiation detector 1A is configured by fixing a light receiving element 3 to a scintillator panel 2A.
- the light receiving element 3 is, for example, a TFT panel in which a photodiode (PD) and a thin film transistor (TFT) are arranged on a glass substrate.
- PD photodiode
- TFT thin film transistor
- the light receiving element 3 is attached to one side of the scintillator panel 2A so that the light receiving surface 3a faces a scintillator layer 13 (to be described later) in the scintillator panel 2A.
- an image sensor such as a CCD is a fiber optical plate (FOP: an optical device in which optical fibers of several microns are bundled, for example, J5734 manufactured by Hamamatsu Photonics). What was connected via can also be used.
- FOP fiber optical plate
- the scintillator panel 2A includes a glass substrate 11 serving as a support, an organic resin layer (first organic resin layer) 12 that protects the glass substrate 11, a scintillator layer 13 that converts incident radiation into visible light, and a scintillator layer. And a moisture-resistant protective layer 14 that protects 13 from moisture.
- the glass substrate 11 is an extremely thin substrate having a thickness of 150 ⁇ m or less, preferably 100 ⁇ m or less, for example. Since the thickness of the glass substrate 11 is extremely thin, sufficient radiation transparency and flexibility can be obtained, and the followability of the scintillator panel 2A when being attached to the light receiving surface 3a of the light receiving element 3 is improved. It is secured.
- the organic resin layer 12 is formed so as to cover the entire surface of the glass substrate 11 by vapor deposition (for example, vapor deposition) of polyparaxylene or polyurea, for example.
- the thickness of the organic resin layer 12 is, for example, about 10 to several tens of ⁇ m.
- the scintillator layer 13 is formed on the one surface 11a side of the glass substrate 11 on which the organic resin layer 12 is formed, for example, by growing and depositing CsI columnar crystals doped with Tl by vapor deposition.
- the thickness of the scintillator layer 13 is, for example, 250 ⁇ m.
- the scintillator layer 13 is highly hygroscopic and may be deliquescent by moisture in the air if left exposed. For this reason, the scintillator layer 13 requires a moisture-resistant protective layer 14.
- the protective layer 14 is formed so as to cover the scintillator layer 13 together with the glass substrate 11 on which the organic resin layer 12 is formed, for example, by growing polyparaxylylene or the like using a vapor deposition method such as a CVD method. Yes.
- the thickness of the protective layer 14 is, for example, about 10 ⁇ m.
- the radiation incident from the glass substrate 11 side is converted into light in the scintillator layer 13 and detected by the light receiving element 3.
- the glass substrate 11 having a thickness of 150 ⁇ m or less serves as a support, whereby excellent radiation transparency and flexibility are obtained.
- the glass substrate 11 Since the glass substrate 11 has sufficient flexibility, it is possible to satisfy the shape followability when the scintillator panel 2A is attached to the light receiving surface 3a of the light receiving element 3.
- the thermal expansion coefficient of the light receiving surface 3a and the thermal expansion coefficient of the glass substrate 11 of the scintillator panel 2A can be matched. For this reason, fine scratches on the glass substrate 11 and scratches that occur between the TFT panel due to abnormal growth portions that occur when the scintillator layer 13 is formed by evaporation move to the light receiving surface 3a due to heat during operation. It is possible to prevent the trouble of calibration from being complicated.
- an organic resin layer 12 is formed so as to cover the entire surface of the glass substrate 11.
- the glass substrate 11 is reinforced and the generation
- This also contributes to an improvement in handling at the time of manufacture and use.
- stray light from the side surface 11c of the glass substrate 11 can be prevented, and the organic resin layer 12 is formed on the entire surface, thereby suppressing the warpage of the glass substrate 11 due to internal stress after the scintillator layer 13 is formed. It becomes.
- the effect of suppressing the warp of the glass substrate 11 is particularly remarkable when the glass substrate 11 is a small substrate of about 10 cm ⁇ 10 cm.
- the organic resin layer 12 is formed so as to cover the entire surface of the glass substrate 11, so that the surface state of the glass substrate 11 is adjusted so as to have surface energy and surface roughness suitable for forming the scintillator layer 13. It is also possible to adjust.
- FIG. 2 is a cross-sectional view showing a configuration of a radiation detector according to the second exemplary embodiment of the present invention.
- a resin film layer 16 is further arranged outside the glass substrate 11 on which the organic resin layer 12 is formed. This is different from the first embodiment.
- the resin film layer 16 is a surface opposite to the surface on which the scintillator layer 13 is formed (the other surface 11b) in the glass substrate 11 on which the organic resin layer 12 is formed. ) Side is affixed by using a laminator or the like.
- the resin film layer 16 uses a laminator or the like on the surface (one surface 11a) on which the scintillator layer 13 is formed in the glass substrate 11 on which the organic resin layer 12 is formed. Is pasted.
- the resin film layer 16 is selected from, for example, PET (polyethylene terephthalate), PEN (polyethylene naphthalate), COP (cycloolefin polymer), and PI (polyimide).
- the thickness of the resin film layer 16 is, for example, about 100 ⁇ m like the organic resin layer 12.
- it is preferable that the edge part of the resin film layer 16 is the same as the edge part of the glass substrate 11, or just protrudes slightly.
- the glass substrate 11 is reinforced by the organic resin layer 12 as in the above-described embodiment, so that the occurrence of chipping and cracks at the edge portion can be suppressed. Further, stray light from the side surface 11c of the glass substrate 11 can be prevented, and the warpage of the glass substrate 11 can be suppressed by forming the organic resin layer 12 on the entire surface.
- the glass substrate 11 is further reinforced by the addition of the resin film layer 16, and the occurrence of chipping and cracks at the edge portion can be more reliably suppressed.
- the resin film layer 16 is disposed on the other surface 11b side of the glass substrate 11 as shown in FIG. 2A, the internal stress of the scintillator layer 13 can be canceled and the warpage of the glass substrate 11 can be more effectively suppressed. it can.
- FIG. 2B when the resin film layer 16 is disposed on the one surface 11a side of the glass substrate 11, the light transmission to the other surface 11b side of the glass substrate 11 is maintained, so As a result of attenuation of reflection toward the element 3, the resolution can be maintained.
- FIG. 3 is a cross-sectional view showing a configuration of a radiation detector according to the third exemplary embodiment of the present invention.
- the radiation detectors 1D and 1E according to the third embodiment include an organic resin layer (second organic layer) on the outside of the glass substrate 11 on which the organic resin layer 12 is formed in the scintillator panels 2D and 2E.
- the resin layer is different from the first embodiment in that a resin layer 17 is further arranged.
- the organic resin layer 17 is a surface opposite to the surface on which the scintillator layer 13 is formed (the other surface 11b) on the glass substrate 11 on which the organic resin layer 12 is formed. ) And the side surface 11c.
- the organic resin layer 17 covers the surface (one surface 11a) on which the scintillator layer 13 is formed and the side surface 11c in the glass substrate 11 on which the organic resin layer 12 is formed. Is formed.
- the organic resin layer 17 for example, a silicon resin, a urethane resin, an epoxy resin, a fluorine resin, or the like can be used. Moreover, as a formation method of the organic resin layer 17, the application
- the thickness of the organic resin layer 17 is, for example, about 100 ⁇ m like the organic resin layer 12.
- the glass substrate 11 is reinforced by the organic resin layer 12 as in the above-described embodiment, so that the occurrence of chipping and cracks at the edge portion can be suppressed. Further, stray light from the side surface 11c of the glass substrate 11 can be prevented, and the warpage of the glass substrate 11 can be suppressed by forming the organic resin layer 12 on the entire surface.
- the glass substrate 11 is further reinforced by the addition of the organic resin layer 17, and the occurrence of chipping and cracks at the edge portion can be more reliably suppressed.
- FIG. 3A when the organic resin layer 17 is formed so as to cover the other surface 11b and the side surface 11c of the glass substrate 11, the effect of preventing stray light from the side surface 11c and the warpage of the glass substrate 11 are eliminated. The suppression effect can be further enhanced.
- 3B when the organic resin layer 17 is formed so as to cover the one surface 11a and the side surface 11c of the glass substrate 11, the effect of preventing stray light from the side surface 11c is enhanced. As a result of the light transmission to the other surface 11b side of the substrate 11 being maintained and the reflection to the light receiving element 3 side being attenuated, the resolution can be maintained.
- SYMBOLS 1A-1E Radiation detector, 2A-2E ... Scintillator panel, 3 ... Light receiving element, 11 ... Glass substrate, 11a ... One side, 11b ... Other side, 11c ... Side surface, 12 ... Organic resin layer (1st organic resin layer) ), 13 ... scintillator layer, 14 ... protective layer, 16 ... resin film layer, 17 ... organic resin layer (second organic resin layer).
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Abstract
Description
[第1実施形態]
[第2実施形態]
[第3実施形態]
Claims (9)
- 放射線透過性を有する厚さ150μm以下のガラス基板と、
前記ガラス基板の表面全体を覆うように形成された第1の有機樹脂層と、
前記第1の有機樹脂層が形成された前記ガラス基板の一面側に形成されたシンチレータ層と、
前記第1の有機樹脂層が形成された前記ガラス基板と共に前記シンチレータ層を覆うように形成された耐湿性の保護層と、を備えたことを特徴とするシンチレータパネル。 - 前記第1の有機樹脂層は、ポリパラキシリレン及びポリ尿素から選択されることを特徴とする請求項1に記載のシンチレータパネル。
- 前記第1の有機樹脂層が形成された前記ガラス基板の他面側と前記保護層との間に樹脂フィルム層が貼り付けられていることを特徴とする請求項1又は2に記載のシンチレータパネル。
- 前記第1の有機樹脂層が形成された前記ガラス基板の一面側と前記シンチレータ層との間に樹脂フィルム層が貼り付けられていることを特徴とする請求項1又は2に記載のシンチレータパネル。
- 前記樹脂フィルム層は、PET、PEN、COP、及びPIから選択されることを特徴とする請求項3又は4に記載のシンチレータパネル。
- 前記第1の有機樹脂層が形成された前記ガラス基板の他面側と側面側とを覆うように第2の有機樹脂層が形成されていることを特徴とする請求項1又は2に記載のシンチレータパネル。
- 前記第1の有機樹脂層が形成された前記ガラス基板の一面側と側面側とを覆うように第2の有機樹脂層が形成されていることを特徴とする請求項1又は2に記載のシンチレータパネル。
- 前記第2の有機樹脂層は、シリコン樹脂、ウレタン樹脂、エポキシ樹脂、及びフッ素樹脂から選択されることを特徴とする請求項6又は7に記載のシンチレータパネル。
- 請求項1~8のいずれか一項に記載のシンチレータパネルと、
前記保護層が形成された前記シンチレータ層に対向して配置された受光素子と、を備えたことを特徴とする放射線検出器。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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KR20147034257A KR20150032835A (ko) | 2012-07-20 | 2013-04-18 | 신틸레이터 패널 및 방사선 검출기 |
EP13819853.6A EP2876647B1 (en) | 2012-07-20 | 2013-04-18 | Scintillator panel and radiation detector |
CN201380038628.4A CN104488039B (zh) | 2012-07-20 | 2013-04-18 | 闪烁器面板以及放射线检测器 |
US14/414,956 US9316584B2 (en) | 2012-07-20 | 2013-04-18 | Scintillator panel and radiation detector |
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JP2012-161762 | 2012-07-20 | ||
JP2012161762A JP5917323B2 (ja) | 2012-07-20 | 2012-07-20 | シンチレータパネル及び放射線検出器 |
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US (1) | US9316584B2 (ja) |
EP (1) | EP2876647B1 (ja) |
JP (1) | JP5917323B2 (ja) |
KR (1) | KR20150032835A (ja) |
CN (1) | CN104488039B (ja) |
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JP6549950B2 (ja) * | 2015-09-15 | 2019-07-24 | 浜松ホトニクス株式会社 | シンチレータパネル、及び、放射線検出器 |
KR102285706B1 (ko) * | 2019-08-21 | 2021-08-04 | 동국대학교 산학협력단 | 신틸레이터 및 이의 제조방법 |
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- 2013-04-18 WO PCT/JP2013/061509 patent/WO2014013771A1/ja active Application Filing
- 2013-04-18 KR KR20147034257A patent/KR20150032835A/ko not_active Application Discontinuation
- 2013-04-18 EP EP13819853.6A patent/EP2876647B1/en active Active
- 2013-04-18 US US14/414,956 patent/US9316584B2/en active Active
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Also Published As
Publication number | Publication date |
---|---|
EP2876647A4 (en) | 2016-03-16 |
CN104488039B (zh) | 2016-12-21 |
KR20150032835A (ko) | 2015-03-30 |
US20150198529A1 (en) | 2015-07-16 |
US9316584B2 (en) | 2016-04-19 |
EP2876647A1 (en) | 2015-05-27 |
CN104488039A (zh) | 2015-04-01 |
JP5917323B2 (ja) | 2016-05-11 |
JP2014021002A (ja) | 2014-02-03 |
EP2876647B1 (en) | 2018-09-12 |
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