WO2023077494 - APPARATUS AND METHOD FOR X-RAY FLUORESCENCE IMAGING
National phase entry:
Publication Number
WO/2023/077494
Publication Date
11.05.2023
International Application No.
PCT/CN2021/129191
International Filing Date
08.11.2021
Title **
[English]
APPARATUS AND METHOD FOR X-RAY FLUORESCENCE IMAGING
[French]
APPAREIL ET PROCÉDÉ D'IMAGERIE PAR FLUORESCENCE X
Applicants **
SHENZHEN XPECTVISION TECHNOLOGY CO., LTD.
Inventors
LIU, Yurun
CAO, Peiyan
Application details
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International Searching Authority |
CNIPA
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The Standard Agent's Assignment
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Legal Entity
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Chapter I
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2119 | |
| EPO | Filing, Examination, Granting | 16209 | |
| Japan | Filing, Examination, Granting | 2542 | |
| South Korea | Filing, Examination, Granting | 2809 | |
| USA | Filing, Examination, Granting | 6740 |
Total:
30,419
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
Apparatuses (900) and methods (1300) of X-ray fluorescence (XRF) imaging use a radiation source (910) to stimulate XRF from only a slice (91, 92, 93) of an object (90) by projecting a radiation beam (911, 921) through only the slice (91, 92, 93). An X-ray detector (100) having a plurality of pixels (150, 152) is provided. A collimator (950) having a plurality of parallel collimator plates (951) is positioned between the object (90) and the X-ray detector (100). The radiation beam (911, 921) is not parallel to the collimator plates (951). Neighboring pairs of the collimator plates (951) allow XRF from only respective portions (93b, 93c, 93d) of the slice (93) to reach respective subsets (150a, 150b, 150c, 150d) of the pixels(150, 152). For each of the respective pixel subsets(150a, 150b, 150c, 150d) the X-ray detector (100) sums signals generated in the pixel or pixels (150, 152) of the respective subset (150a, 150b, 150c, 150d). The radiation beam (911, 921) is a fan beam (911) or a pencil beam (921). A pixel pitch (y151) of the X-ray detector (100) is an integer multiple of a plate pitch (y951) of the collimator (950).[French]
L'invention concerne des appareils (900) et des procédés (1300) d'imagerie par fluorescence X qui utilisent une source de rayonnement (910) pour stimuler la fluorescence X à partir d'une tranche (91, 92, 93) d'un objet (90) uniquement en projetant un faisceau de rayonnement (911, 921) à travers la tranche (91, 92, 93) uniquement. L'invention concerne également un détecteur de rayons X (100) comportant une pluralité de pixels (150, 152). Un collimateur (950) comportant une pluralité de plaques de collimation parallèles (951) est positionné entre l'objet (90) et le détecteur de rayons X (100). Le faisceau de rayonnement (911, 921) n'est pas parallèle aux plaques du collimateur (951). Des paires adjacentes de plaques de collimation (951) permettent à la fluorescence X provenant uniquement de parties respectives (93b, 93c, 93d) de la tranche (93) d'atteindre des sous-ensembles respectifs (150a, 150b, 150c, 150d) des pixels (150, 152). Pour chacun des sous-ensembles de pixels respectifs (150a, 150b, 150c, 150d), le détecteur de rayons X (100) additionne les signaux générés dans le ou les pixels (150, 152) du sous-ensemble respectif (150a, 150b, 150c, 150d). Le faisceau de rayonnement (911, 921) est un faisceau en éventail (911) ou un faisceau crayon (921). Un pas de pixel (y151) du détecteur de rayons X (100) est un multiple entier d'un pas de plaque (y951) du collimateur (950).