WO2000062098A1 - Panneau de scintillateur et detecteur d'image rayonnante - Google Patents
Panneau de scintillateur et detecteur d'image rayonnante Download PDFInfo
- Publication number
- WO2000062098A1 WO2000062098A1 PCT/JP1999/001912 JP9901912W WO0062098A1 WO 2000062098 A1 WO2000062098 A1 WO 2000062098A1 JP 9901912 W JP9901912 W JP 9901912W WO 0062098 A1 WO0062098 A1 WO 0062098A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- substrate
- light
- film
- scintillator
- panel
- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays
-
- 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
Definitions
- the present invention relates to a scintillator panel and a radiation image sensor used for medical X-ray photography and the like. Background art
- X-ray sensitive films have been used in the past, but radiation imaging systems using radiation detectors have become widespread in terms of convenience and preservation of imaging results.
- a pixel detector using two-dimensional radiation is acquired as an electric signal by a radiation detector, and this signal is processed by a processing device and displayed on a monitor.
- a radiation detector having a structure in which a scintillation panel in which a scintillation panel is formed on a substrate made of aluminum, glass, fused quartz, or the like, and an imaging element are bonded.
- this radiation detector radiation incident from the substrate side is converted into light in a short time and detected by an image pickup device (see Japanese Patent Publication No. 7-216650).
- An object of the present invention is to provide a scintillator panel with increased light output and a radiation image sensor using the scintillator panel with increased light output. Disclosure of the invention A scintillator panel of the present invention covers a radiation-transmissive substrate, a light-transmissive thin film provided on the substrate, a scintillator deposited on the light-transmissive thin film, and a cover of the scintillator. And a protective film, wherein a refractive index of the light-transmitting thin film is lower than a refractive index of the scintillator.
- the light-transmitting thin film having a refractive index lower than that of the scintillating light is provided between the substrate and the scintillating light, the light generated by the scintillating light is Since the light can be reflected to the light output side by the light transmitting thin film, the light output of the scintillator panel can be increased.
- a radiation image sensor includes a radiation-transmissive substrate, a light-transmissive thin film provided on the substrate, a scintillator deposited on the light-transmissive thin film, and protection for covering the scintillator.
- a light-transmitting thin film wherein a light-transmitting thin film has a refractive index lower than the refractive index of the scintillator panel, and an image sensor is arranged opposite to the scintillator panel of the scintillator panel.
- the scintillator panel since the scintillator panel has a light-transmitting thin film having a refractive index lower than that of the scintillator between the substrate and the scintillator, the light output of the scintillator panel is reduced. Increase. Therefore, the output of the radiation image sensor can be increased.
- FIG. 1 is a cross-sectional view of a scintillator panel according to the first embodiment.
- FIG. 2 is a cross-sectional view of the radiation image sensor according to the first embodiment.
- FIG. 3A is a diagram showing a manufacturing step of the scintillation overnight panel according to the first embodiment.
- FIG. 3B is a diagram showing a manufacturing step of the scintillation overnight panel according to the first embodiment.
- FIG. 3C is a diagram showing a manufacturing process of the scintillation overnight panel according to the first embodiment. It is.
- FIG. 3D is a diagram showing a manufacturing step for the scintillator panel according to the first embodiment.
- FIG. 4 is a cross-sectional view of a scintillator panel according to the second embodiment.
- FIG. 5 is a cross-sectional view of the radiation image sensor according to the second embodiment.
- FIG. 6 is a cross-sectional view of a scintillator panel according to the third embodiment.
- FIG. 7 is a cross-sectional view of the radiation image sensor according to the third embodiment.
- FIG. 1 is a cross-sectional view of the scintillation overnight panel 1
- FIG. 2 is a cross-sectional view of the radiation image sensor 2.
- one surface and a side surface of the A1 substrate 10 of the scintillator panel 1 have been subjected to a sand blast treatment, and the other surface has been subjected to a mirror surface treatment.
- M g F 2 film 1 2 surface scintillation Isseki 1 4 columnar structure for converting incident radiation into visible light is formed.
- the scintillation layer 14 is covered with a substrate 10 and a polyparaxylylene film 16.
- the radiation image sensor 2 has a structure in which an image pickup device 18 is attached to the front end side of the scintillator panel 14 of the scintillator panel 1.
- an image pickup device 18 is attached to the front end side of the scintillator panel 14 of the scintillator panel 1.
- an MgF 2 film (light-transmitting thin film) 12 as a low-refractive-index material is formed on the other surface of the substrate 10 by vacuum evaporation to a thickness of 10 Onm (see FIG. 3B).
- a columnar crystal of CsI doped with T1 is grown on the surface of the 1 ⁇ 2 film 12 by vapor deposition to form a scintillator layer 14 with a thickness of 250 / m (see Fig. 3C). .
- CsI which forms this scintillation stream 14
- a xylylene film 16 is formed. That is, the substrate 10 on which the scintillation layer 14 is formed is put into a CVD apparatus, and a polyparaxylylene film 16 is formed to a thickness of 10 m. As a result, a polyparaxylylene film 16 is formed on the entire surface of the scintillator 14 and the substrate 10 (see FIG. 3D).
- the adhesion between the polyparaxylylene film 16 and the substrate 10 can be improved, and the polyparaxylylene film can be improved. Peeling between the substrate 16 and the substrate 10 can be prevented.
- the radiation image sensor 2 is manufactured by attaching a light receiving section of an image pickup device (CCD) 18 to a front end side of the scintillator panel 14 of the completed scintillator panel 1 so as to face the same (see FIG. 2). .
- CCD image pickup device
- the radiation incident from the substrate 10 side is converted into light by the scintillator 14 and detected by the imaging device 18 c .
- the light output can be increased by 20% as compared with the case of using a scintillation panel in which a scintillation panel is formed on a substrate without providing an MgF 2 film 12. That is, the light generated in the scintillation light 14 travels in all directions, but the light that satisfies the condition for total reflection is reflected by the MgF 2 film 12 as a low refractive index material.
- the light incident on the portion can be increased.
- FIG. 4 is a cross-sectional view of the scintillation overnight panel 3
- FIG. 5 is a cross-sectional view of the radiation image sensor 4.
- the surface of the A1 substrate 10 of the scintillator panel 3 is sandblasted, and the Ag film 22 as a reflection film is formed on one surface.
- a scintillator 14 having a columnar structure for converting incident radiation into visible light is formed on the surface of the LiF film 24 .
- CsI of T1 dope is used for 14 in Chinchile.
- the scintillation light 14 is covered with a substrate 10 and a polyparaxylylene film 16.
- the radiation image sensor 4 has a structure in which an imaging element 18 is attached to the scintillation panel 14 side of the scintillation panel 3.
- the manufacturing process of the scintillator panel 3 will be described. First, the entire surface of a rectangular or circular substrate 10 made of A1 (thickness 1 mm) is subjected to sand blasting using glass beads (# 800), and the surface of the substrate 10 Eliminate the rolling streaks and form fine irregularities on the surface of the substrate 10.
- an Ag film 22 as a reflective film is formed on one surface of the substrate 10 with a thickness of 100 nm by a vacuum evaporation method, and an L film as a low refractive index material is formed on the Ag film 22.
- An iF film 24 is formed with a thickness of 100 nm by a vacuum evaporation method.
- ⁇ ? film? CsI columnar crystals having a dope 1 on the surface are grown by vapor deposition to form scintillation layers 14 with a thickness of 25 O ⁇ zm.
- a polyparaxylylene film 16 is formed with a thickness of 10 ⁇ m by the CVD method. As a result, a polyparaxylylene film 16 is formed on the entire surface of the scintillator 14 and the substrate 10.
- the radiation image sensor 4 is attached to the end of the scintillator panel 14 of the completed scintillator panel 3 with the light-receiving section of the image sensor (CCD) 18 facing it. (See Fig. 5).
- the radiation image sensor 4 of this embodiment when the c detected by the imaging device 1 8 radiation incident from the substrate 1 side 0 in scintillation Isseki 1 4 is converted into light, as a reflection film
- the optical output is increased by 20% compared to the case of using a scintillation panel in which a scintillation panel is formed on a substrate without providing the Ag film 22 and the LiF film 24 as a low refractive index material. Can be done.
- the light generated in the scintillator 14 travels in all directions, but due to the Ag film 22 as a reflective film and the LiF film 24 as a low refractive index material, the Ag film 22 and L Since the light traveling in the iF film 24 direction is reflected, the light incident on the light receiving portion of the image sensor 18 can be increased.
- FIG. 6 is a cross-sectional view of the scintillator panel 5, and FIG. It is sectional drawing. As shown in FIG. 6, the surface of the substrate 26 made of amorphous carbon (a-C) of the scintillator panel 5 has been subjected to sandblasting, and one surface has A 1 as a reflective film. A film 28 has been formed.
- a-C amorphous carbon
- a scintillator 14 having a columnar structure for converting incident radiation into visible light is formed on the surface of the SiO 2 film 30, a scintillator 14 having a columnar structure for converting incident radiation into visible light is formed.
- C sl of T 1 dope is used for 14 days in Shinchire.
- the scintillating light 14 is covered with the substrate 10 and the polyparaxylylene film 16.
- the radiation image sensor 6 has a structure in which an image pickup device 18 is attached to the front end portion of the scintillator panel 14 of the scintillator panel 5.
- an image pickup device 18 is attached to the front end portion of the scintillator panel 14 of the scintillator panel 5.
- the manufacturing process of the Sinchle overnight panel 5 will be described. First, a rectangle or circle The surface of the a-C substrate 26 (1 mm thick) is subjected to sandblasting using glass beads (# 1500) to form fine irregularities on the surface of the substrate 26.
- an A1 film 28 as a reflection film is formed on one surface of the substrate 26 to a thickness of 100 nm by a vacuum evaporation method, and a SiO 2 film 30 as a low refractive index material is formed on the A1 film 28.
- a thickness of S i 0 2 to the T 1 on the surface of the membrane 30 de columnar crystal one-flop the C s I is grown by vapor deposition scintillator Isseki 14 250 m.
- a polyparaxylylene film 16 having a thickness of 10 zm is formed by a CVD method. As a result, a polyparaxylylene film 16 is formed on the entire surface of the scintillator 14 and the substrate 10.
- the radiation image sensor 6 is manufactured by attaching a light receiving section of an image pickup device (CCD) 18 to a front end portion of the scintillating screen 14 of the completed scintillating screen panel 5 so as to face the same (see FIG. 7). ).
- CCD image pickup device
- the radiation incident from the substrate 10 side is converted into light by the scintillator 14 and detected by the imaging device 18 c
- the A 1 film as a reflection film The light output can be increased by 15% as compared with the case of using a scintillation panel in which a scintillation panel is formed on a substrate without providing the SiO 2 film 30 as a low refractive index material.
- the MgF 2 film, the L i F film, or the S i O 2 film is used as the light transmitting thin film, but the L i F, M g F 2 , C a F 2 , S i 0 2, a 1203 , MgO, ⁇ a C 1, KB r, may be film made of a material containing a substance of the group consisting of KC 1 and AgC l.
- C s I (T 1) Cs I (T 1)
- the present invention is not limited to this, and Csl (Na), NaI (Tl), LiI (Eu), KI (T1), and the like may be used.
- a substrate made of A1 or a substrate made of a—C is used as the substrate 10.
- a substrate having good X-ray transmittance may be used.
- a substrate made of Ait), a substrate made of Be, a substrate made of glass, or the like may be used.
- the polyparaxylylene in the above-mentioned embodiment includes, in addition to polyparaxylylene, polymonoxyl paraxylene, polydichloroparaxylylene, polytetraclox paraxylylene, polyfluoroparaxylylene, polydimethyl valaxylylene, polydiethyl Including paraxylylene.
- the scintillator panel of the present invention since the light-transmitting thin film having a refractive index lower than that of the scintillator is provided between the substrate and the scintillator, light generated by the scintillator is generated by Since the light can be reflected to the light output side by the light transmissive thin film, the light output of the scintillator panel can be increased. Therefore, the image detected by the radiation image sensor using the scintillation panel can be made clear.
- the scintillation panel since the scintillation panel has a light-transmitting thin film having a refractive index lower than that of the scintillation light between the substrate and the scintillation light, the scintillation light panel is formed. The light output of the panel increases. Therefore, the detected image can be made clear.
- the scintillator panel and the radiation image sensor of the present invention are suitable for use in medical X-ray photography and the like.
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Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99913617A EP1298455B1 (en) | 1999-04-09 | 1999-04-09 | Scintillator panel and radiation ray image sensor |
PCT/JP1999/001912 WO2000062098A1 (fr) | 1999-04-09 | 1999-04-09 | Panneau de scintillateur et detecteur d'image rayonnante |
CNB998118826A CN1161625C (zh) | 1999-04-09 | 1999-04-09 | 闪烁体面板和射线图象传感器 |
DE69937125T DE69937125T2 (de) | 1999-04-09 | 1999-04-09 | Szintillatorplatte und strahlungsbildsensor |
KR1020017004196A KR100638413B1 (ko) | 1999-04-09 | 1999-04-09 | 신틸레이터 패널 및 방사선 이미지 센서 |
AU31681/99A AU3168199A (en) | 1999-04-09 | 1999-04-09 | Scintillator panel and radiation ray image sensor |
US09/971,644 US6753531B2 (en) | 1999-04-09 | 2001-10-09 | Scintillator panel and radiation image sensor |
US10/851,333 US6911658B2 (en) | 1999-04-09 | 2004-05-24 | Scintillator panel and radiation image sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP1999/001912 WO2000062098A1 (fr) | 1999-04-09 | 1999-04-09 | Panneau de scintillateur et detecteur d'image rayonnante |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/971,644 Continuation-In-Part US6753531B2 (en) | 1999-04-09 | 2001-10-09 | Scintillator panel and radiation image sensor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000062098A1 true WO2000062098A1 (fr) | 2000-10-19 |
Family
ID=14235453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/001912 WO2000062098A1 (fr) | 1999-04-09 | 1999-04-09 | Panneau de scintillateur et detecteur d'image rayonnante |
Country Status (7)
Country | Link |
---|---|
US (2) | US6753531B2 (ja) |
EP (1) | EP1298455B1 (ja) |
KR (1) | KR100638413B1 (ja) |
CN (1) | CN1161625C (ja) |
AU (1) | AU3168199A (ja) |
DE (1) | DE69937125T2 (ja) |
WO (1) | WO2000062098A1 (ja) |
Cited By (4)
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US6753531B2 (en) | 1999-04-09 | 2004-06-22 | Hamamatsu Photonics K.K. | Scintillator panel and radiation image sensor |
US7034306B2 (en) | 1998-06-18 | 2006-04-25 | Hamamatsu Photonics K.K. | Scintillator panel and radiation image sensor |
JP2008082852A (ja) * | 2006-09-27 | 2008-04-10 | Toshiba Corp | 放射線検出装置 |
JP2008249335A (ja) * | 2007-03-29 | 2008-10-16 | Konica Minolta Medical & Graphic Inc | 放射線用シンチレータパネル及び放射線画像撮影装置 |
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USRE42281E1 (en) | 2000-09-11 | 2011-04-12 | Hamamatsu Photonics K.K. | Scintillator panel, radiation image sensor and methods of producing them |
US7468514B1 (en) * | 2007-06-15 | 2008-12-23 | Hamamatsu Photonics K.K. | Radiation image conversion panel, scintillator panel, and radiation image sensor |
US7732788B2 (en) * | 2007-10-23 | 2010-06-08 | Hamamatsu Photonics K.K. | Radiation image converting panel, scintillator panel and radiation image sensor |
US7465932B1 (en) | 2007-06-15 | 2008-12-16 | Hamamatsu Photonics K.K. | Radiation image conversion panel, scintillator panel, and radiation image sensor |
CN101471307B (zh) * | 2007-12-29 | 2012-07-04 | 三星电子株式会社 | 半导体封装体及其制造方法 |
CN101604023B (zh) * | 2008-06-12 | 2012-11-14 | 清华大学 | 用于辐射探测的阵列固体探测器 |
WO2010109344A2 (en) * | 2009-03-25 | 2010-09-30 | Koninklijke Philips Electronics N.V. | Method to optimize the light extraction from scintillator crystals in a solid-state detector |
JP2011137665A (ja) * | 2009-12-26 | 2011-07-14 | Canon Inc | シンチレータパネル及び放射線撮像装置とその製造方法、ならびに放射線撮像システム |
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DE102014224449A1 (de) * | 2014-11-28 | 2016-06-02 | Forschungszentrum Jülich GmbH | Szintillationsdetektor mit hoher Zählrate |
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1999
- 1999-04-09 DE DE69937125T patent/DE69937125T2/de not_active Expired - Lifetime
- 1999-04-09 CN CNB998118826A patent/CN1161625C/zh not_active Expired - Fee Related
- 1999-04-09 KR KR1020017004196A patent/KR100638413B1/ko not_active IP Right Cessation
- 1999-04-09 EP EP99913617A patent/EP1298455B1/en not_active Expired - Lifetime
- 1999-04-09 WO PCT/JP1999/001912 patent/WO2000062098A1/ja active IP Right Grant
- 1999-04-09 AU AU31681/99A patent/AU3168199A/en not_active Abandoned
-
2001
- 2001-10-09 US US09/971,644 patent/US6753531B2/en not_active Expired - Lifetime
-
2004
- 2004-05-24 US US10/851,333 patent/US6911658B2/en not_active Expired - Fee Related
Patent Citations (3)
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JPH01240887A (ja) * | 1988-03-23 | 1989-09-26 | Hitachi Ltd | 放射線検出器及びその製造方法 |
JPH05203755A (ja) * | 1991-09-23 | 1993-08-10 | General Electric Co <Ge> | 光収集効率を高めた光検出器シンチレータ放射線撮像装置 |
US5227635A (en) * | 1991-11-22 | 1993-07-13 | Xsirious, Inc. | Mercuric iodide x-ray detector |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7034306B2 (en) | 1998-06-18 | 2006-04-25 | Hamamatsu Photonics K.K. | Scintillator panel and radiation image sensor |
US7408177B2 (en) | 1998-06-18 | 2008-08-05 | Hamamatsu Photonics K.K. | Scintillator panel and radiation image sensor |
US7705315B2 (en) | 1998-06-18 | 2010-04-27 | Hamamatsu Photonics K.K. | Scintillator panel and radiation image sensor |
US6753531B2 (en) | 1999-04-09 | 2004-06-22 | Hamamatsu Photonics K.K. | Scintillator panel and radiation image sensor |
US6911658B2 (en) | 1999-04-09 | 2005-06-28 | Hamamatsu Photonics K.K. | Scintillator panel and radiation image sensor |
JP2008082852A (ja) * | 2006-09-27 | 2008-04-10 | Toshiba Corp | 放射線検出装置 |
JP2008249335A (ja) * | 2007-03-29 | 2008-10-16 | Konica Minolta Medical & Graphic Inc | 放射線用シンチレータパネル及び放射線画像撮影装置 |
Also Published As
Publication number | Publication date |
---|---|
AU3168199A (en) | 2000-11-14 |
CN1322301A (zh) | 2001-11-14 |
US20020027200A1 (en) | 2002-03-07 |
US20040211918A1 (en) | 2004-10-28 |
EP1298455B1 (en) | 2007-09-12 |
EP1298455A1 (en) | 2003-04-02 |
US6911658B2 (en) | 2005-06-28 |
CN1161625C (zh) | 2004-08-11 |
DE69937125D1 (de) | 2007-10-25 |
US6753531B2 (en) | 2004-06-22 |
KR20010106499A (ko) | 2001-11-29 |
DE69937125T2 (de) | 2008-06-19 |
EP1298455A4 (en) | 2003-04-02 |
KR100638413B1 (ko) | 2006-10-24 |
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