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Proceedings Paper

Effects of angular range on image quality of chest digital tomosynthesis
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Paper Abstract

Chest digital tomosynthesis (CDT) is a new 3D imaging technique that can be expected to improve clinical diagnosis over conventional chest radiography. We investigated the effect of the angular range of data acquisition on the image quality using newly developed CDT system. The four different acquisition sets were studied using ±15°, ±20°, ±30°, and ±35° angular ranges with 21 projection views (PVs). The point spread function (PSF), modulation transfer function (MTF), artifact spread function (ASF), and normalized contrast-to-noise ratio (CNR) were used to evaluate the image quality. We found that increasing angular ranges improved vertical resolution. The results indicated that there was the opposite relationship of the CNR with angular range for the two tissue types. While CNR for heart tissue increased with increasing angular range, CNR for spine bone decreased. The results showed that the angular range is an important parameter for the CDT exam.

Paper Details

Date Published: 31 March 2016
PDF: 6 pages
Proc. SPIE 9783, Medical Imaging 2016: Physics of Medical Imaging, 97836C (31 March 2016); doi: 10.1117/12.2216842
Show Author Affiliations
Haenghwa Lee, Yonsei Univ. (Korea, Republic of)
Ye-seul Kim, Yonsei Univ. (Korea, Republic of)
Sunghoon Choi, Yonsei Univ. (Korea, Republic of)
Dong-Hoon Lee, Yonsei Univ. (Korea, Republic of)
Seungyeon Choi, Yonsei Univ. (Korea, Republic of)
Hee-Joung Kim, Yonsei Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 9783:
Medical Imaging 2016: Physics of Medical Imaging
Despina Kontos; Thomas G. Flohr, Editor(s)

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