RADIATION IMAGING SYSTEM

PROBLEM TO BE SOLVED: To provide a radiation imaging system capable of reducing degradation in resolution of a peripheral part due to oblique entering of a radiation ray.SOLUTION: The radiation imaging system includes a laminated scintillator 102 comprising a plurality of scintillator layers (104-10...

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Main Authors YASUI NOBUHIRO, OHASHI RYOTA, DEN TORU
Format Patent
LanguageEnglish
Japanese
Published 22.12.2016
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Abstract PROBLEM TO BE SOLVED: To provide a radiation imaging system capable of reducing degradation in resolution of a peripheral part due to oblique entering of a radiation ray.SOLUTION: The radiation imaging system includes a laminated scintillator 102 comprising a plurality of scintillator layers (104-106), a photodetector array 103 that detects a ray from the laminated scintillator, and image processing means that uses a result of detection by the photodetector array to obtain information on a radiation image. The plurality of scintillator layers are laminated in a normal direction of a light-receiving surface of the photodetector array, and emit scintillation light of wavelengths different from each other. The photodetector array is capable of discriminating and detecting the scintillation light from the laminated scintillator. The image processing means acquires information on a radiation image by subjecting the detection results discriminated by the photodetector array to correction according to an incident angle of the radiation, and superposing the detection results with each other.SELECTED DRAWING: Figure 1 【課題】 放射線が斜めに入射することによる周辺部の解像度低下を軽減することができる放射線撮像システムを提供すること。【解決手段】 放射線撮像システムは、複数のシンチレータ層(104〜106)を有する積層シンチレータ102と、積層シンチレータからの光を検出する受光素子アレイ103と、受光素子アレイによる検出結果を用いて放射線画像の情報を取得する画像処理手段を有する。複数のシンチレータ層は、受光素子アレイの受光面の法線方向において積層され、複数のシンチレータ層は互いに発するシンチレーション光の波長が異なる。受光素子アレイは、積層シンチレータからのシンチレーション光を波長で弁別して検出可能に構成されている。画像処理手段は、受光素子アレイによって弁別された検出結果同士を、放射線の入射角度に応じた補正を行って重畳することで放射線画像の情報を取得する。【選択図】 図1
AbstractList PROBLEM TO BE SOLVED: To provide a radiation imaging system capable of reducing degradation in resolution of a peripheral part due to oblique entering of a radiation ray.SOLUTION: The radiation imaging system includes a laminated scintillator 102 comprising a plurality of scintillator layers (104-106), a photodetector array 103 that detects a ray from the laminated scintillator, and image processing means that uses a result of detection by the photodetector array to obtain information on a radiation image. The plurality of scintillator layers are laminated in a normal direction of a light-receiving surface of the photodetector array, and emit scintillation light of wavelengths different from each other. The photodetector array is capable of discriminating and detecting the scintillation light from the laminated scintillator. The image processing means acquires information on a radiation image by subjecting the detection results discriminated by the photodetector array to correction according to an incident angle of the radiation, and superposing the detection results with each other.SELECTED DRAWING: Figure 1 【課題】 放射線が斜めに入射することによる周辺部の解像度低下を軽減することができる放射線撮像システムを提供すること。【解決手段】 放射線撮像システムは、複数のシンチレータ層(104〜106)を有する積層シンチレータ102と、積層シンチレータからの光を検出する受光素子アレイ103と、受光素子アレイによる検出結果を用いて放射線画像の情報を取得する画像処理手段を有する。複数のシンチレータ層は、受光素子アレイの受光面の法線方向において積層され、複数のシンチレータ層は互いに発するシンチレーション光の波長が異なる。受光素子アレイは、積層シンチレータからのシンチレーション光を波長で弁別して検出可能に構成されている。画像処理手段は、受光素子アレイによって弁別された検出結果同士を、放射線の入射角度に応じた補正を行って重畳することで放射線画像の情報を取得する。【選択図】 図1
Author DEN TORU
OHASHI RYOTA
YASUI NOBUHIRO
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Snippet PROBLEM TO BE SOLVED: To provide a radiation imaging system capable of reducing degradation in resolution of a peripheral part due to oblique entering of a...
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SubjectTerms DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEASUREMENT OF NUCLEAR OR X-RADIATION
MEASURING
MEDICAL OR VETERINARY SCIENCE
PHYSICS
SURGERY
TESTING
Title RADIATION IMAGING SYSTEM
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