TY - GEN
T1 - Metal artifact reduction in CT images sinogram TV inpainting
AU - Duan, Xinhui
AU - Zhang, Li
AU - Xiao, Yongshun
AU - Cheng, Jianping
AU - Chen, Zhiqiang
AU - Xing, Yuxiang
PY - 2008
Y1 - 2008
N2 - In this paper, a total variation (TV) inpainting method is proposed for metal artifact reduction in medical computed tomography (CT). Digital inpainting is an image processing method to fill in the lost image information in a consistent way. In our work, projection data with metal projection region (MPR) are treated as a damaged image, and TV inpainting is applied to "inpaint" the information missing region. Compared to conventional interpolation methods, the advantage of our algorithm lies in dealing with complicate cases such as an image with multiple metal objects. In numerical experiments, both TV inpainting and linear interpolation method are performed on noise-free and additive noisy projection of a modified SheppLogan phantom. Results show that the algorithm proposed fills metal projection gaps more smoothly and accurately than linear interpolation, hence produces images of superior quality after reconstruction. Relevant practical issues including the limitation of the algorithm and possible impr vements for future work are discussed.
AB - In this paper, a total variation (TV) inpainting method is proposed for metal artifact reduction in medical computed tomography (CT). Digital inpainting is an image processing method to fill in the lost image information in a consistent way. In our work, projection data with metal projection region (MPR) are treated as a damaged image, and TV inpainting is applied to "inpaint" the information missing region. Compared to conventional interpolation methods, the advantage of our algorithm lies in dealing with complicate cases such as an image with multiple metal objects. In numerical experiments, both TV inpainting and linear interpolation method are performed on noise-free and additive noisy projection of a modified SheppLogan phantom. Results show that the algorithm proposed fills metal projection gaps more smoothly and accurately than linear interpolation, hence produces images of superior quality after reconstruction. Relevant practical issues including the limitation of the algorithm and possible impr vements for future work are discussed.
KW - Computed tomography( CT)
KW - Metal artifacts
KW - TV inpainting
UR - http://www.scopus.com/inward/record.url?scp=67649191987&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67649191987&partnerID=8YFLogxK
U2 - 10.1109/NSSMIC.2008.4774201
DO - 10.1109/NSSMIC.2008.4774201
M3 - Conference contribution
AN - SCOPUS:67649191987
SN - 9781424427154
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 4175
EP - 4177
BT - 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
T2 - 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
Y2 - 19 October 2008 through 25 October 2008
ER -