TY - GEN
T1 - A 4d CT sorting algorithm based on image boundary discontinuity
AU - Yuan, Kehong
AU - Duan, Chaijie
AU - Tian, Zhen
PY - 2010/9/2
Y1 - 2010/9/2
N2 - Respiration induces significant movements of thorax and abdomen, which shift target site and thus degrade the accuracy and efficacy of radiotherapy. 4D CT sorting is an indispensable and important step to retrospectively rearrange the reconstructed CT images sampled at scan positions to get a set of volume images corresponding to different respiratory phases. Currently, most current sorting methods depend on external surrogates of respiratory motion, which may not always accurately catch the internal motion especially when irregular breathing occurs and lead to severe image artifacts. The 4D CT images produced by our method present fewer artifacts than that by RPM phase-based sorting, which shows that our method is feasible to sort 4D CT images without using external motion monitoring system.
AB - Respiration induces significant movements of thorax and abdomen, which shift target site and thus degrade the accuracy and efficacy of radiotherapy. 4D CT sorting is an indispensable and important step to retrospectively rearrange the reconstructed CT images sampled at scan positions to get a set of volume images corresponding to different respiratory phases. Currently, most current sorting methods depend on external surrogates of respiratory motion, which may not always accurately catch the internal motion especially when irregular breathing occurs and lead to severe image artifacts. The 4D CT images produced by our method present fewer artifacts than that by RPM phase-based sorting, which shows that our method is feasible to sort 4D CT images without using external motion monitoring system.
UR - http://www.scopus.com/inward/record.url?scp=77956083695&partnerID=8YFLogxK
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U2 - 10.1109/MIACA.2010.5528513
DO - 10.1109/MIACA.2010.5528513
M3 - Conference contribution
AN - SCOPUS:77956083695
SN - 9781424480128
T3 - 2010 International Conference on Medical Image Analysis and Clinical Application, MIACA 2010
SP - 147
EP - 150
BT - 2010 International Conference on Medical Image Analysis and Clinical Application, MIACA 2010
T2 - 2010 International Conference on Medical Image Analysis and Clinical Application, MIACA 2010
Y2 - 11 June 2010 through 13 June 2010
ER -