Share Email Print
cover

Proceedings Paper

Calcification visibility study using combined high dose and low dose cone beam CT projections
Author(s): Y, Zhong; C. J. Lai; L. Chen; T. Han; Y. Shen; X. Liu; T. Wang; S. Ge; Y. Yi; Z. You; C. C. Shaw
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Cone beam breast CT technique provides true three dimensional (3D) images of breast anatomy; however the detectability of calcification is limited due to low exposure levels on each projection. In this study, we investigated the possibility of using anisotropic exposure distributions to improve the visibility of calcifications in the breast CT images. Our approach was to measure the CBCT projections with isotropic high and low exposures separately. Reconstruction was performed upon different combinations of these two sets of projection sequences to investigate the visibility change due to the limited-angle high exposure projections. Our preliminary results show that the visibility is improved with the number of high exposure projections in the combinations. In the future we will measure the CBCT projections with anisotropic exposures while keeping the total exposure constant.

Paper Details

Date Published: 13 March 2009
PDF: 9 pages
Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 72585U (13 March 2009); doi: 10.1117/12.813780
Show Author Affiliations
Y, Zhong, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
C. J. Lai, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
L. Chen, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
T. Han, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Y. Shen, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
X. Liu, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
T. Wang, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
S. Ge, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Y. Yi, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Z. You, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
C. C. Shaw, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)


Published in SPIE Proceedings Vol. 7258:
Medical Imaging 2009: Physics of Medical Imaging
Ehsan Samei; Jiang Hsieh, Editor(s)

© SPIE. Terms of Use
Back to Top