JP2016202901A - 検出器装置及びx線ct装置 - Google Patents
検出器装置及びx線ct装置 Download PDFInfo
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Classifications
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- 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
- G01T1/24—Measuring radiation intensity with semiconductor detectors
- G01T1/241—Electrode arrangements, e.g. continuous or parallel strips or the like
-
- 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
- G01N23/04—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 forming images of the material
- G01N23/046—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 forming images of the material using tomography, e.g. computed tomography [CT]
-
- 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
- G01T1/24—Measuring radiation intensity with semiconductor detectors
- G01T1/247—Detector read-out circuitry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/29—Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/50—Detectors
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- High Energy & Nuclear Physics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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Abstract
【解決手段】実施形態の検出器装置は、検出器と、ファラデーケージとを備える。ファラデーケージは、検出器が内部に配置され、少なくとも1つの側面に、検出器に応じた方向に複数の電極を有する。
【選択図】図6A
Description
300 ファラデーケージ
Claims (15)
- 検出器と、
前記検出器が内部に配置され、少なくとも1つの側面に、前記検出器に応じた方向に複数の電極を有するファラデーケージと、
を備える、検出器装置。 - 前記検出器は光子計数型検出器(Photon Counting Detector)である、請求項1に記載の検出器装置。
- 前記検出器を複数備え、
前記複数の検出器はリング状に配置される、請求項1又は2に記載の検出器装置。 - 前記光子計数型検出器は、
第1面及び第2面を有する矩形の半導体結晶であって、前記第1面及び前記第2面が平行である半導体結晶と、
前記第1面を覆うカソード電極と、
前記第2面に設けられたアノードピクセルと、
を備える、請求項2に記載の検出器装置。 - 前記複数の電極は、前記第2面から前記第1面へ向かう方向に並んでおり、
前記複数の電極それぞれに印加される電圧は、前記第2面から前記第1面へと向かうにつれて減少する、請求項4に記載の検出器装置。 - 前記半導体結晶は、CdZnTe及びCdTeのうちの1つである、請求項4又は5に記載の検出器装置。
- 前記ファラデーケージは、X線を透過し、光を透過しない材料を含んで構成される、請求項1〜6のいずれか1つに記載の検出器装置。
- 前記光子計数型検出器は、
コリメータと、
前記光子計数型検出器と前記コリメータとの間に配置される誘電絶縁材料と
をさらに備える、請求項2に記載の検出器装置。 - 前記電極の長手方向は、前記第2面から前記第1面へ向かう方向と直交する方向と平行な方向である、請求項4に記載の検出器装置。
- 前記複数の電極は、抵抗により接続され、前記第2面から前記第1へ向かう方向に、非直線状に配置されている、請求項4に記載の検出器装置。
- 前記複数の電極は、前記第2面から前記第1面へ向かう方向に並んでおり、
前記電極間は、抵抗により接続され、
前記複数の電極のうち、最も前記第1面側に位置する電極は、抵抗を介して前記カソード電極に接続されており、最も前記第2面側に位置する電極は、抵抗を介して前記アノードピクセルに接続されている、請求項4に記載の検出器装置。 - 前記電極間は、複数の前記抵抗により接続されている、請求項11に記載の検出器装置。
- 前記ファラデーケージの前記側面には、前記第2面から前記第1面へ向かう第1の方向に前記電極と抵抗とが交互に複数並んだ電気部材が、前記第1の方向と直交する第2の方向に複数並んで設けられており、
前記第2の方向に並んだ複数の前記電気部材それぞれについて、最も前記第1面側に位置する電極は、抵抗を介して前記カソード電極に接続されており、最も前記第2面側に位置する電極は、抵抗を介して前記アノードピクセルに接続されている、請求項4に記載の検出器装置。 - 前記複数の電極は、前記ファラデーケージの4つの側面すべてに配置される、請求項1〜13のいずれか1つに記載の検出器装置。
- X線を放出するX線源と、
前記X線を検出する検出器装置と、
前記検出器装置により検出された前記X線に基づく投影データに基づいて、画像を再構成する処理回路と、
を備え、
前記検出器装置は、
検出器と、
前記検出器が内部に配置され、少なくとも1つの側面に、前記検出器に応じた方向に複数の電極を有するファラデーケージと、
を備える、X線CT装置。
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US14/692,519 US9618633B2 (en) | 2015-04-21 | 2015-04-21 | Side-electrodes for a Faraday cage on a photon-counting detector array |
US14/692,519 | 2015-04-21 |
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Cited By (1)
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JP2018141705A (ja) * | 2017-02-28 | 2018-09-13 | 国立大学法人群馬大学 | 荷電粒子放射線計測方法および荷電粒子放射線計測装置 |
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US9757088B2 (en) * | 2014-11-13 | 2017-09-12 | Toshiba Medical Systems Corporation | Detector apparatus for cone beam computed tomography |
US9757085B2 (en) * | 2015-02-25 | 2017-09-12 | Toshiba Medical Systems Corporation | Method for identifying and processing detector polarization in photon-counting spectral X-ray detectors |
US10775856B1 (en) * | 2019-12-02 | 2020-09-15 | Management Services Group, Inc. | Compute device housing with layers of electromagnetic interference shields, and devices and systems for the same |
US11835666B1 (en) * | 2020-07-31 | 2023-12-05 | Redlen Technologies, Inc. | Photon counting computed tomography detector with improved count rate stability and method of operating same |
US20230175987A1 (en) * | 2020-11-18 | 2023-06-08 | Jed Co., Ltd | X-ray inspection apparatus |
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US9119589B2 (en) * | 2012-03-22 | 2015-09-01 | Kabushiki Kaisha Toshiba | Method and system for spectral computed tomography (CT) with sparse photon counting detectors |
US9198632B2 (en) | 2013-02-28 | 2015-12-01 | Kabushiki Kaisha Toshiba | Method for scattering correction for sparsely distributed stationary detectors and rotating X-ray source |
WO2014172822A1 (zh) * | 2013-04-26 | 2014-10-30 | 清华大学 | 一种半导体探测器 |
CN104111470A (zh) * | 2014-07-15 | 2014-10-22 | 清华大学 | 半导体探测器的信号处理方法及装置 |
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- 2015-04-21 US US14/692,519 patent/US9618633B2/en active Active
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Cited By (2)
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JP2018141705A (ja) * | 2017-02-28 | 2018-09-13 | 国立大学法人群馬大学 | 荷電粒子放射線計測方法および荷電粒子放射線計測装置 |
JP7109885B2 (ja) | 2017-02-28 | 2022-08-01 | 国立大学法人群馬大学 | 荷電粒子放射線計測方法および荷電粒子放射線計測装置 |
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US20160313454A1 (en) | 2016-10-27 |
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