Synthesis and Inpainting-Based MR-CT Registration for Image-Guided Thermal Ablation of Liver Tumors
Image registration
Microwave ablation
Inpainting
Ablation zone
DOI:
10.48550/arxiv.1907.13020
Publication Date:
2019-01-01
AUTHORS (10)
ABSTRACT
Thermal ablation is a minimally invasive procedure for treat-ing small or unresectable tumors. Although CT widely used guiding procedures, the contrast of tumors against surrounding normal tissues in images often poor, aggravating difficulty accurate thermal ablation. In this paper, we propose fast MR-CT image registration method to overlay pre-procedural MR (pMR) onto an intra-procedural (iCT) liver By first using Cycle-GAN model with mutual information constraint generate synthesized (sCT) from cor-responding pMR, carried out through traditional mono-modality CT-CT registration. At stage, partial-convolution-based network inpaint probe and its artifacts iCT image. Then, unsupervised efficiently align (pCT) inpainted (inpCT) The final transformation pMR obtained by combining two estimated transformations,i.e., (1) space pCT (through sCT) (2) inpCT). Experimental results confirm that proposed achieves high accuracy very computational speed.
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