TY - JOUR
T1 - Convergence of SART + OS + TV iterative reconstruction algorithm for optical CT imaging of gel dosimeters
AU - Du, Yi
AU - Yu, Gongyi
AU - Xiang, Xincheng
AU - Wang, Xiangang
AU - De Deene, Yves
N1 - Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.
PY - 2017/6/5
Y1 - 2017/6/5
N2 - Computational simulations are used to investigate the convergence of a hybrid iterative algorithm for optical CT reconstruction, i.e. the simultaneous algebraic reconstruction technique (SART) integrated with ordered subsets (OS) iteration and total variation (TV) minimization regularization, or SART+OS+TV for short. The influence of parameter selection to reach convergence, spatial dose gradient integrity, MTF and convergent speed are discussed. It's shown that the results of SART+OS+TV algorithm converge to the true values without significant bias, and MTF and convergent speed are affected by different parameter sets used for iterative calculation. In conclusion, the performance of the SART+OS+TV depends on parameter selection, which also implies that careful parameter tuning work is required and necessary for proper spatial performance and fast convergence.
AB - Computational simulations are used to investigate the convergence of a hybrid iterative algorithm for optical CT reconstruction, i.e. the simultaneous algebraic reconstruction technique (SART) integrated with ordered subsets (OS) iteration and total variation (TV) minimization regularization, or SART+OS+TV for short. The influence of parameter selection to reach convergence, spatial dose gradient integrity, MTF and convergent speed are discussed. It's shown that the results of SART+OS+TV algorithm converge to the true values without significant bias, and MTF and convergent speed are affected by different parameter sets used for iterative calculation. In conclusion, the performance of the SART+OS+TV depends on parameter selection, which also implies that careful parameter tuning work is required and necessary for proper spatial performance and fast convergence.
UR - http://www.scopus.com/inward/record.url?scp=85022003369&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/847/1/012025
DO - 10.1088/1742-6596/847/1/012025
M3 - Conference paper
AN - SCOPUS:85022003369
SN - 1742-6588
VL - 847
SP - 1
EP - 5
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012025
T2 - 9th International Conference on 3D Radiation Dosimetry
Y2 - 7 November 2016 through 10 November 2016
ER -