Chartrand G, Cresson T, Chav R, Gotra A, Tang A, De Guise JA. Liver Segmentation on CT and MR Using Laplacian Mesh Optimization.
IEEE Trans Biomed Eng 2016;
64:2110-2121. [PMID:
27893375 DOI:
10.1109/tbme.2016.2631139]
[Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE
The purpose of this paper is to describe a semiautomated segmentation method for the liver and evaluate its performance on CT-scan and MR images.
METHODS
First, an approximate 3-D model of the liver is initialized from a few user-generated contours to globally outline the liver shape. The model is then automatically deformed by a Laplacian mesh optimization scheme until it precisely delineates the patient's liver. A correction tool was implemented to allow the user to improve the segmentation until satisfaction.
RESULTS
The proposed method was tested against 30 CT-scans from the SLIVER07 challenge repository and 20 MR studies from the Montreal University Hospital Center, covering a wide spectrum of liver morphologies and pathologies. The average volumetric overlap error was 5.1% for CT and 7.6% for MRI and the average segmentation time was 6 min.
CONCLUSION
The obtained results show that the proposed method is efficient, reliable, and could effectively be used routinely in the clinical setting.
SIGNIFICANCE
The proposed approach can alleviate the cumbersome and tedious process of slice-wise segmentation required for precise hepatic volumetry, virtual surgery, and treatment planning.
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