2021 IEEE International Conference on Acoustics, Speech and Signal Processing

6-11 June 2021 • Toronto, Ontario, Canada

Extracting Knowledge from Information

2021 IEEE International Conference on Acoustics, Speech and Signal Processing

6-11 June 2021 • Toronto, Ontario, Canada

Extracting Knowledge from Information

Technical Program

Paper Detail

Paper IDBIO-9.5
Paper Title IMPROVING INTRAOPERATIVE LIVER REGISTRATION IN IMAGE-GUIDED SURGERY WITH LEARNING-BASED RECONSTRUCTION
Authors Meng Jia, Matthew Kyan, York University, Canada
SessionBIO-9: Medical Image Analysis
LocationGather.Town
Session Time:Wednesday, 09 June, 14:00 - 14:45
Presentation Time:Wednesday, 09 June, 14:00 - 14:45
Presentation Poster
Topic Biomedical Imaging and Signal Processing: [BIO-MIA] Medical image analysis
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Virtual Presentation  Click here to watch in the Virtual Conference
Abstract Nonrigid image-to-physical registration is a crucial component in image-guided liver surgery. To overcome the problems caused by noisy, partial, and sparse intraoperative sampling, we propose a novel occupancy-learning-based mesh to point cloud registration and apply it to align the preoperative liver image to intraoperative samples. We train a point cloud deep network to reconstruct occupancy function from sparse points and use this reconstructed liver to guide the nonrigid registration. Experiments show this method reduces Target Registration Error (TRE) of rigid and nonrigid baselines by 21.5% and 11.8%. For training this occupancy network, a novel crossover method is proposed to synthesize deformed liver meshes and points. We demonstrate that the system is robust to the imperfectness of generated training data. This method might be useful in other areas that require soft-tissue registration, where only very sparse data is available during acquisition.