Liver Tumor Segmentation Based on Multi-Scale Candidate Generation and Fractal Residual Network

Zhiqi Bai, Huiyan Jiang, Siqi Li, Yu Dong Yao

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

Liver cancer is one of the most common cancers. Liver tumor segmentation is one of the most important steps in treating liver cancer. Accurate tumor segmentation on computed tomography (CT) images is a challenging task due to the variation of the tumor's shape, size, and location. To this end, this paper proposes a liver tumor segmentation method on CT volumes using multi-scale candidate generation method (MCG), 3D fractal residual network (3D FRN), and active contour model (ACM) in a coarse-to-fine manner. First, livers are segmented using 3D U-Net and then MCG is performed on these liver regions for obtaining tumor candidates (all superpixel blocks). Second, 3D FRN is proposed to further determine tumor regions, which is considered as coarse segmentation results. Finally, the ACM is used for tumor segmentation refinement. The proposed 3D MCG-FRN + ACM is trained using the 110 cases in the LiTS dataset and evaluated on a public liver tumor dataset of the 3DIRCADb with dice per case of 0.67. The experimentations and comparisons demonstrate the performance advantage of the 3D MCG-FRN + ACM compared to other segmentation methods.

Original languageEnglish
Article number8736946
Pages (from-to)82122-82133
Number of pages12
JournalIEEE Access
Volume7
DOIs
StatePublished - 2019

Keywords

  • Active contour model
  • CT volume
  • Fractal residual network
  • Liver tumor segmentation
  • Multi-scale candidate generation method

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