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Proceedings Paper

Images registration and superimposition for dual resolution cone beam CT: a preliminary study
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Paper Abstract

Registration and superimposition of images acquired from two different detectors is essential to dual-resolution cone beam CT. In this study we implemented and tested a method of integration, which is to register and superimpose the high resolution volume of interest (VOI) only images to the low resolution full field images. First, we acquired two images sets: One is low exposure low resolution full field images acquired with a low resolution detector; the other is high exposure high resolution volume of interest (VOI) images acquired with a high resolution detector and VOI mask. To locate the VOI positions in full field images, the third images set with VOI mask but without phantom was acquired with the low resolution detector. In the third images set, high contrast VOI boundaries were located and used to determine positions of the VOI in full field images. Then high resolution VOI images were superimposed with the full field images to generate integrated images set. Integrated images set was tested by subtraction from full field images set and then used to reconstruct images using regular FDK algorithm. In the reconstructed images, five Al wires (as small as 152 μm) can be clearly seen in the VOI.

Paper Details

Date Published: 23 March 2010
PDF: 8 pages
Proc. SPIE 7622, Medical Imaging 2010: Physics of Medical Imaging, 762234 (23 March 2010); doi: 10.1117/12.844450
Show Author Affiliations
Zhicheng You, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Youtao Shen, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Yuncheng Zhong, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Lingyun Chen, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Tao Han, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Shuaiping Ge, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Ying Yi, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Tianpeng Wang, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Chao-Jen Lai, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Xinming Liu, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Chris C. Shaw, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)


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

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