Processing

Please wait...

PATENTSCOPE will be unavailable a few hours for maintenance reason on Tuesday 27.07.2021 at 12:00 PM CEST
Settings

Settings

Goto Application

1. WO2012032816 - RADIOLOGICAL IMAGE DETECTOR

Publication Number WO/2012/032816
Publication Date 15.03.2012
International Application No. PCT/JP2011/062215
International Filing Date 27.05.2011
IPC
G01T 1/20 2006.1
GPHYSICS
01MEASURING; TESTING
TMEASUREMENT OF NUCLEAR OR X-RADIATION
1Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
16Measuring radiation intensity
20with scintillation detectors
A61B 6/00 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
C09K 11/00 2006.1
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
11Luminescent, e.g. electroluminescent, chemiluminescent, materials
C09K 11/85 2006.1
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
11Luminescent, e.g. electroluminescent, chemiluminescent, materials
08containing inorganic luminescent materials
77containing rare earth metals
85containing halogen
G01N 23/04 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
23Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/-G01N17/178
02by transmitting the radiation through the material
04and forming images of the material
G01T 1/18 2006.1
GPHYSICS
01MEASURING; TESTING
TMEASUREMENT OF NUCLEAR OR X-RADIATION
1Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
16Measuring radiation intensity
18with counting-tube arrangements, e.g. with Geiger counters
CPC
C09K 11/7773
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
11Luminescent, e.g. electroluminescent, chemiluminescent materials
08containing inorganic luminescent materials
77containing rare earth metals
7766containing two or more rare earth metals
7772Halogenides
7773with alkali or alkaline earth metal
G01T 1/205
GPHYSICS
01MEASURING; TESTING
TMEASUREMENT OF NUCLEAR OR X-RADIATION
1Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
16Measuring radiation intensity
20with scintillation detectors
205the detector being a gas
Applicants
  • 株式会社トクヤマ TOKUYAMA CORPORATION [JP]/[JP] (AllExceptUS)
  • 国立大学法人東北大学 TOHOKU UNIVERSITY [JP]/[JP] (AllExceptUS)
  • 国立大学法人京都大学 Kyoto University [JP]/[JP] (AllExceptUS)
  • 国立大学法人東京大学 The University of Tokyo [JP]/[JP] (AllExceptUS)
  • 福田 健太郎 FUKUDA, Kentaro [JP]/[JP] (UsOnly)
  • 石津 澄人 ISHIZU, Sumito [JP]/[JP] (UsOnly)
  • 河口 範明 KAWAGUCI, Noriaki [JP]/[JP] (UsOnly)
  • 須山 敏尚 SUYAMA, Toshihisa [JP]/[JP] (UsOnly)
  • 吉川 彰 YOSHIKAWA, Akira [JP]/[JP] (UsOnly)
  • 柳田 健之 YANAGIDA, Takayuki [JP]/[JP] (UsOnly)
  • 横田 有為 YOKOTA, Yui [JP]/[JP] (UsOnly)
  • 窪 秀利 KUBO, Hidetoshi [JP]/[JP] (UsOnly)
  • 黒澤 俊介 KUROSAWA, Syunsuke [JP]/[JP] (UsOnly)
  • 谷上 幸次郎 TANIUE, Kojiro [JP]/[JP] (UsOnly)
  • 谷森 達 TANIMORI, Toru [JP]/[JP] (UsOnly)
  • 関谷 洋之 SEKIYA, Hiroyuki [JP]/[JP] (UsOnly)
Inventors
  • 福田 健太郎 FUKUDA, Kentaro
  • 石津 澄人 ISHIZU, Sumito
  • 河口 範明 KAWAGUCI, Noriaki
  • 須山 敏尚 SUYAMA, Toshihisa
  • 吉川 彰 YOSHIKAWA, Akira
  • 柳田 健之 YANAGIDA, Takayuki
  • 横田 有為 YOKOTA, Yui
  • 窪 秀利 KUBO, Hidetoshi
  • 黒澤 俊介 KUROSAWA, Syunsuke
  • 谷上 幸次郎 TANIUE, Kojiro
  • 谷森 達 TANIMORI, Toru
  • 関谷 洋之 SEKIYA, Hiroyuki
Agents
  • 小野 尚純 ONO, Hisazumi
Priority Data
2010-20351510.09.2010JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) RADIOLOGICAL IMAGE DETECTOR
(FR) DÉTECTEUR D'IMAGE RADIOLOGIQUE
(JA) 放射線画像検出器
Abstract
(EN)
[Problem] The purpose of the present invention is to provide a novel radiological image detector, which can detect radiation, such as hard X-rays and γ-rays, with high sensitivity, and which has excellent position resolution and count rate characteristics. [Solution] Provided is a radiological image detector having combined therein a scintillator, which converts inputted radiation into ultraviolet, and a gas-multiplication ultraviolet image detector, which converts ultraviolet into electrons, multiplies the electrons using gas electron avalanche phenomenon, and detects the electrons. The radiological image detector is characterized in that the scintillator is formed of a LiLuF4 crystal containing at least one kind of emission center element selected from among a group composed of Nd, Er and Tm, and that the gas-multiplication ultraviolet image detector is configured of a photoelectric converter, such as cesium iodide and cesium telluride that convert ultraviolet into electrons, a gas electron multiplier, which multiplies electrons using gas electron avalanche phenomenon, and a pixelated electrode having a multiplication function and a detection function.
(FR)
La présente invention vise à procurer un nouveau détecteur d'image radiologique, qui peut détecter un rayonnement, tel que des rayons X durs et des rayons γ, ΰ une sensibilité élevée, et qui a une excellente résolution de position et d'excellentes caractéristiques de taux de comptage. À cet effet, l'invention porte sur un détecteur d'image radiologique ayant, combinés à l'intérieur de celui-ci, un scintillateur, qui convertit un rayonnement entré en ultraviolets, et un détecteur d'image d'ultraviolets à multiplication à gaz, qui convertit des ultraviolets en électrons, qui multiplie les électrons à l'aide d'un phénomène d'avalanche électronique à gaz, et qui détecte les électrons. Le détecteur d'image radiologique est caractérisé en ce que le scintillateur est constitué par un cristal de LiLuF4 contenant au moins un type d'élément de centre d'émission choisi dans un groupe comprenant Nd, Er et Tm, et en ce que le détecteur d'image d'ultraviolets à multiplication à gaz est configuré à partir d'un convertisseur photoélectrique, tel que de l'iodure de césium et du tellurure de césium, qui convertit des ultraviolets en électrons, d'un multiplicateur d'électrons à gaz, qui multiplie des électrons à l'aide d'un phénomène d'avalanche électronique à gaz, et d'une électrode pixélisée ayant une fonction de multiplication et une fonction de détection.
(JA)
【課題】硬X線やγ線等の放射線を高感度で検出することができ、位置分解能及び計数率特性に優れた、新規な放射線画像検出器を提供することを目的とする。 【解決手段】入射した放射線を紫外線に変換するシンチレーターと、紫外線を電子に変換し、かかる電子をガス電子雪崩現象を利用して増幅し、検出するガス増幅型紫外線画像検出器とを組み合わせた放射線画像検出器であって、シンチレーターがNd、Er及びTmから選ばれる少なくとも1種の発光中心元素を含有するLiLuF結晶であり、ガス増幅型紫外線画像検出器が、ヨウ化セシウムやテルル化セシウムなどの紫外線を電子に変換する光電変換物質、電子をガス電子雪崩現象を利用して増幅するガス電子増幅器、及び増幅機能と検出機能を有するピクセル型電極より構成されることを特徴とする放射線画像検出器である。
Also published as
Latest bibliographic data on file with the International Bureau