Title:
APPARATUS AND METHOD FOR X-RAY FLUORESCENCE IMAGING
Document Type and Number:
WIPO Patent Application WO/2023/077494
Kind Code:
A1
Abstract:
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).
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Inventors:
LIU YURUN (CN)
CAO PEIYAN (CN)
CAO PEIYAN (CN)
Application Number:
PCT/CN2021/129191
Publication Date:
May 11, 2023
Filing Date:
November 08, 2021
Export Citation:
Assignee:
SHENZHEN XPECTVISION TECH CO LTD (CN)
International Classes:
G01N23/223
Domestic Patent References:
| WO2014039793A1 | 2014-03-13 | |||
| WO2008068044A1 | 2008-06-12 |
Foreign References:
| CN1756508A | 2006-04-05 | |||
| CN112461877A | 2021-03-09 | |||
| US20040092807A1 | 2004-05-13 | |||
| US20210080408A1 | 2021-03-18 |
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