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Distance Map Supervised Landmark Localization for MR-TRUS Registration

Authors :
Song, Xinrui
Xu, Xuanang
Xu, Sheng
Turkbey, Baris
Wood, Bradford J.
Sanford, Thomas
Yan, Pingkun
Publication Year :
2022

Abstract

In this work, we propose to explicitly use the landmarks of prostate to guide the MR-TRUS image registration. We first train a deep neural network to automatically localize a set of meaningful landmarks, and then directly generate the affine registration matrix from the location of these landmarks. For landmark localization, instead of directly training a network to predict the landmark coordinates, we propose to regress a full-resolution distance map of the landmark, which is demonstrated effective in avoiding statistical bias to unsatisfactory performance and thus improving performance. We then use the predicted landmarks to generate the affine transformation matrix, which outperforms the clinicians' manual rigid registration by a significant margin in terms of TRE.<br />Comment: Submitted to SPIE Medical Imaging 2023

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.2210.05738
Document Type :
Working Paper