Embossed x-ray computed tomography utilizing pixel-shifted dual-energy subtraction

To observe fine blood vessels as uneven tomographic images at a high contrast, we performed tentative experiments on embossed x-ray computed tomography (CT). We constructed a cone-beam CT scanner and carried out dual-energy CT with tube voltages of 60 and 100 kV. X-ray photons penetrating through an...

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Bibliographic Details
Published in:Review of scientific instruments 2024-07, Vol.95 (7)
Main Authors: Ito, Kazuki, Sato, Eiichi, Oda, Yasuyuki, Moriyama, Hodaka, Hagiwara, Osahiko, Enomoto, Toshiyuki, Yoshida, Sohei, Watanabe, Manabu
Format: Article
Language:English
Subjects:
Blood vessels
Computed tomography
Embossing
Flat panels
Gadolinium
Image contrast
Medical imaging
Personal computers
Pixels
X ray imagery
X ray tubes
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Summary:To observe fine blood vessels as uneven tomographic images at a high contrast, we performed tentative experiments on embossed x-ray computed tomography (CT). We constructed a cone-beam CT scanner and carried out dual-energy CT with tube voltages of 60 and 100 kV. X-ray photons penetrating through an object were detected using an indirect-conversion flat panel detector, and radiograms were produced and sent to a personal computer to reconstruct tomograms. Embossed CT was performed using pixel-shifted dual-energy subtraction, and blood vessels filled with Gd medium were observed as uneven images at high contrast and spatial resolutions. Using 1.4-time magnification imaging in combination with a 0.1-mm-focus x-ray tube, the diameter of the object visible on the embossed CT was below 100 μm.
ISSN:0034-6748
1089-7623
1089-7623
DOI:10.1063/5.0210690