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Proceedings Paper

Accurate and efficient image-intensifier distortion-correction algorithm and its application in volume tomographic angiography
Author(s): Xiaohui Wang; Ruola Ning
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Paper Abstract

An algorithm has been developed to correct the image distortion introduced by the image intensifier - CCD camera chain in our volume tomographic angiography imaging system. First the distorted image is partitioned into small quadrilateral regions, then each partition is mapped individually to the corrected image by its corresponding bilinear functions. The parameters of these bilinear functions can be acquired by a special calibration procedure and stored as a lookup table. The maximum errors before and after the distortion correction were measured to be 5.96 mm and 0.03 mm. The method is further applied to the 3D image reconstruction of a simulated vascular phantom and live animal studies.

Paper Details

Date Published: 2 May 1997
PDF: 14 pages
Proc. SPIE 3032, Medical Imaging 1997: Physics of Medical Imaging, (2 May 1997); doi: 10.1117/12.274012
Show Author Affiliations
Xiaohui Wang, Univ. of Rochester (United States)
Ruola Ning, Univ. of Rochester (United States)

Published in SPIE Proceedings Vol. 3032:
Medical Imaging 1997: Physics of Medical Imaging
Richard L. Van Metter; Jacob Beutel, Editor(s)

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