TY - GEN
T1 - Point-guided modeling and segmentation of myocardium for low dose cardiac CT images
AU - Liu, Yixun
AU - Nacif, Marcelo Souto
AU - Liu, Songtao
AU - Sibley, Christopher T.
AU - Bluemke, David A.
AU - Summers, Ronald M.
AU - Yao, Jianhua
PY - 2012
Y1 - 2012
N2 - Cardiac CT is emerging as a preferable modality to detect myocardial stress/rest perfusion; however the insufficient contrast of myocardium on CT image makes its segmentation difficult. In this paper, we present a point-guided modeling and deformable model-based segmentation method. This method first builds a triangular surface model of myocardium through Bézier contour fitting based on a few points selected by clinicians. Then, a deformable model-based segmentation method is developed to refine the segmentation result. The experiments on 8 cases show the accuracy of the segmentation in terms of true positive volume fraction, false positive volume fractions, and average surface distance can reach 91.0%, 0.3%, and 0.6mm, respectively. The comparison between the proposed method and a graph cut-based method is performed. The results demonstrate that this method is effective in improving the accuracy further.
AB - Cardiac CT is emerging as a preferable modality to detect myocardial stress/rest perfusion; however the insufficient contrast of myocardium on CT image makes its segmentation difficult. In this paper, we present a point-guided modeling and deformable model-based segmentation method. This method first builds a triangular surface model of myocardium through Bézier contour fitting based on a few points selected by clinicians. Then, a deformable model-based segmentation method is developed to refine the segmentation result. The experiments on 8 cases show the accuracy of the segmentation in terms of true positive volume fraction, false positive volume fractions, and average surface distance can reach 91.0%, 0.3%, and 0.6mm, respectively. The comparison between the proposed method and a graph cut-based method is performed. The results demonstrate that this method is effective in improving the accuracy further.
UR - http://www.scopus.com/inward/record.url?scp=84870801932&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84870801932&partnerID=8YFLogxK
U2 - 10.1109/EMBC.2012.6347197
DO - 10.1109/EMBC.2012.6347197
M3 - Conference contribution
C2 - 23367132
AN - SCOPUS:84870801932
SN - 9781424441198
T3 - Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
SP - 5327
EP - 5330
BT - 2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2012
T2 - 34th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 2012
Y2 - 28 August 2012 through 1 September 2012
ER -