TY - JOUR
T1 - Development of X-ray phase CT with a hybrid configuration of Lau and Talbot-Lau interferometers
AU - Kageyama, Masashi
AU - Okajima, Kenichi
AU - Maesawa, Minoru
AU - Nonoguchi, Masahiro
AU - Nonoguchi, Manabu
AU - Kuribayashi, Masaru
AU - Hara, Yukihiro
AU - Momose, Atsushi
N1 - Funding Information:
This research was supported by the SENTAN project of the Japan Science and Technology Agency (JST).
Publisher Copyright:
© 2021 - IOS Press. All rights reserved.
PY - 2021
Y1 - 2021
N2 - X-ray phase computed tomography (CT) is used to observe the inside of light materials. In this paper, we report a new study to develop and test a laboratory assembled X-ray phase CT system that comprises an X-ray Lau interferometer, a rotating Mo anode X-ray tube, and a detector with high spatial resolution. The system has a high spatial resolution lower than 10 μm, which is evaluated by differentiating neighbouring carbon fibres in a polymer composite material. The density resolution is approximately 0.035 g/cm3, which enables to successfully distinguish the high-density polyethylene (HDPE, 0.93 g/cm3) from the ultra-low-density polyethylene (ULDPE, 0.88 g/cm3) in the sample. Moreover, the system can be switched to operate on another mode based on a Talbot-Lau interferometer that provides a wider field of view with a moderate spatial resolution (approximately 100 μm). By analyzing sample images of the biological, this study demonstrates the feasibility and advantages of using hybrid configuration of this X-ray phase CT system.
AB - X-ray phase computed tomography (CT) is used to observe the inside of light materials. In this paper, we report a new study to develop and test a laboratory assembled X-ray phase CT system that comprises an X-ray Lau interferometer, a rotating Mo anode X-ray tube, and a detector with high spatial resolution. The system has a high spatial resolution lower than 10 μm, which is evaluated by differentiating neighbouring carbon fibres in a polymer composite material. The density resolution is approximately 0.035 g/cm3, which enables to successfully distinguish the high-density polyethylene (HDPE, 0.93 g/cm3) from the ultra-low-density polyethylene (ULDPE, 0.88 g/cm3) in the sample. Moreover, the system can be switched to operate on another mode based on a Talbot-Lau interferometer that provides a wider field of view with a moderate spatial resolution (approximately 100 μm). By analyzing sample images of the biological, this study demonstrates the feasibility and advantages of using hybrid configuration of this X-ray phase CT system.
KW - Talbot-Lau interferometer
KW - X-ray CT
KW - X-ray phase contrast
KW - grating
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U2 - 10.3233/XST-200732
DO - 10.3233/XST-200732
M3 - Article
C2 - 33164981
AN - SCOPUS:85101602502
SN - 0895-3996
VL - 29
SP - 63
EP - 73
JO - Journal of X-Ray Science and Technology
JF - Journal of X-Ray Science and Technology
IS - 1
ER -