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Proceedings Paper

Embossed radiography utilizing a subtraction program in conjunction with a 0.5-mm-focus x-ray tube
Author(s): Eiichi Sato; Purkhet Abderyim; Akihiro Osawa; Hiroshi Matsukiyo; Toshiyuki Enomoto; Manabu Watanabe; Kiyomi Takahashi; Shigehiro Sato; Akira Ogawa; Jun Onagawa
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Paper Abstract

We developed an embossed radiography system utilizing single- and dual-energy subtractions for decreasing the absorption contrast of unnecessary regions, and contrast resolution of a target region was increased using image-shifting subtraction and a linear-contrast system in a flat panel detector (FPD). To carry out embossed radiography, we developed a computer program for two-dimensional subtraction, and a conventional x-ray generator with a 0.5-mm-focus tube was used. Energy subtraction was performed at tube voltages of 42.5 and 70.0 kV, a tube current of 1.0 mA, and an x-ray exposure time of 5.0 s. Embossed radiography was achieved with cohesion imaging by use of the FPD with pixel sizes of 48 ×48 μm, and the shifting dimension of an object in the horizontal and vertical directions ranged from 48 to 144 μm. We obtained high-contrast embossed images of fine bones and coronary arteries approximately 100 μm in diameter.

Paper Details

Date Published: 22 March 2010
PDF: 9 pages
Proc. SPIE 7622, Medical Imaging 2010: Physics of Medical Imaging, 76222I (22 March 2010); doi: 10.1117/12.844005
Show Author Affiliations
Eiichi Sato, Iwate Medical Univ. (Japan)
Purkhet Abderyim, Iwate Medical Univ. (Japan)
Akihiro Osawa, The Toho Univ. School of Medicine (Japan)
Hiroshi Matsukiyo, The Toho Univ. School of Medicine (Japan)
Toshiyuki Enomoto, The Toho Univ. School of Medicine (Japan)
Manabu Watanabe, The Toho Univ. School of Medicine (Japan)
Kiyomi Takahashi, Iwate Medical Univ. (Japan)
Shigehiro Sato, Iwate Medical Univ. (Japan)
Akira Ogawa, Iwate Medical Univ. (Japan)
Jun Onagawa, Tohoku Gakuin Univ. (Japan)

Published in SPIE Proceedings Vol. 7622:
Medical Imaging 2010: Physics of Medical Imaging
Ehsan Samei; Norbert J. Pelc, Editor(s)

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