TY - GEN
T1 - Automated segmentation of CBCT image using spiral CT atlases and convex optimization
AU - Wang, Li
AU - Chen, Ken Chung
AU - Shi, Feng
AU - Liao, Shu
AU - Li, Gang
AU - Gao, Yaozong
AU - Shen, Steve G.F.
AU - Yan, Jin
AU - Lee, Philip K.M.
AU - Chow, Ben
AU - Liu, Nancy X.
AU - Xia, James J.
AU - Shen, Dinggang
PY - 2013
Y1 - 2013
N2 - Cone-beam computed tomography (CBCT) is an increasingly utilized imaging modality for the diagnosis and treatment planning of the patients with craniomaxillofacial (CMF) deformities. CBCT scans have relatively low cost and low radiation dose in comparison to conventional spiral CT scans. However, a major limitation of CBCT scans is the widespread image artifacts such as noise, beam hardening and inhomogeneity, causing great difficulties for accurate segmentation of bony structures from soft tissues, as well as separating mandible from maxilla. In this paper, we presented a novel fully automated method for CBCT image segmentation. In this method, we first estimated a patient-specific atlas using a sparse label fusion strategy from predefined spiral CT atlases. This patient-specific atlas was then integrated into a convex segmentation framework based on maximum a posteriori probability for accurate segmentation. Finally, the performance of our method was validated via comparisons with manual ground-truth segmentations.
AB - Cone-beam computed tomography (CBCT) is an increasingly utilized imaging modality for the diagnosis and treatment planning of the patients with craniomaxillofacial (CMF) deformities. CBCT scans have relatively low cost and low radiation dose in comparison to conventional spiral CT scans. However, a major limitation of CBCT scans is the widespread image artifacts such as noise, beam hardening and inhomogeneity, causing great difficulties for accurate segmentation of bony structures from soft tissues, as well as separating mandible from maxilla. In this paper, we presented a novel fully automated method for CBCT image segmentation. In this method, we first estimated a patient-specific atlas using a sparse label fusion strategy from predefined spiral CT atlases. This patient-specific atlas was then integrated into a convex segmentation framework based on maximum a posteriori probability for accurate segmentation. Finally, the performance of our method was validated via comparisons with manual ground-truth segmentations.
UR - http://www.scopus.com/inward/record.url?scp=84894619949&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84894619949&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-40760-4_32
DO - 10.1007/978-3-642-40760-4_32
M3 - Conference contribution
C2 - 24505768
AN - SCOPUS:84894619949
SN - 9783642407598
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 251
EP - 258
BT - Medical Image Computing and Computer-Assisted Intervention, MICCAI 2013 - 16th International Conference, Proceedings
T2 - 16th International Conference on Medical Image Computing and Computer Assisted Intervention, MICCAI 2013
Y2 - 22 September 2013 through 26 September 2013
ER -