Red-ray computed tomography with high spatial resolutions

Osahiko Hagiwara; Eiichi Sato; Kazuki Ito; Hodaka Moriyama; Sohei Yoshida; Kunihiro Yoshioka; Toshiyuki Enomoto; Manabu Watanabe; Hiroyuki Nitta

doi:10.1117/12.2677157

4 October 2023 Red-ray computed tomography with high spatial resolutions

Osahiko Hagiwara, Eiichi Sato, Kazuki Ito, Hodaka Moriyama, Sohei Yoshida, Kunihiro Yoshioka, Toshiyuki Enomoto, Manabu Watanabe, Hiroyuki Nitta

Author Affiliations +

Proceedings Volume 12674, Applications of Digital Image Processing XLVI; 126740A (2023) https://doi.org/10.1117/12.2677157
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

To image blood vessels, we performed fundamental experiments of a red-ray computed tomography (RRCT) scanner using 650-nm-laser and high-sensitivity-photodiode (PD) modules. The line laser beam is irradiated to an object, and the photons penetrating through the object are detected using the PD module through a 1.0-mm-diameter graphite pinhole and a 0.7-mm-diameter 5-mm-length graphite collimator for the PD. The spatial resolutions were primarily determined by the collimator diameter for the PD and were approximately 0.7×0.7 mm². RRCT was performed by repeating the reciprocating translations and rotations of the object, and the ray-sampling-translation and rotation steps were 0.1 mm and 0.5°, respectively. The image contrast was regulated using the digital amplifier, and the visible diameter of object was 0.5mm.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Osahiko Hagiwara, Eiichi Sato, Kazuki Ito, Hodaka Moriyama, Sohei Yoshida, Kunihiro Yoshioka, Toshiyuki Enomoto, Manabu Watanabe, and Hiroyuki Nitta "Red-ray computed tomography with high spatial resolutions", Proc. SPIE 12674, Applications of Digital Image Processing XLVI, 126740A (4 October 2023); https://doi.org/10.1117/12.2677157

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