Effect of asymmetric focal spots in angiography
作者:
A. E. Burgess,
期刊:
Medical Physics
(WILEY Available online 1998)
卷期:
Volume 4,
issue 1
页码: 21-25
ISSN:0094-2405
年代: 1998
DOI:10.1118/1.594297
出版商: American Association of Physicists in Medicine
数据来源: WILEY
摘要:
The effect of asymmetric focal spots in blood vessel imaging is investigated by computer simulation. Phase distortion effects are studied in isolation from MTF effects. Calculations are done for a number of symmetric and asymmetric foci with identical standard deviations. It is concluded that blood vessel image degradation due to focus asymmetryper seis small and that the LSF standard deviation is a useful size parameter for both symmetric and asymmetric foci.
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