MR-CT image registration in liver cancer treatment with an open configuration MR scanner

Songyuan Tang*, Yen Wei Chen, Rui Xu, Yongtian Wang, Shigehiro Morikawa, Yoshimasa Kurumi

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Citations (Scopus)

Abstract

MR - CT image registration has been used in the liver cancer treatment with an open MR Scanner to guide percutaneous puncture for ablation of tumors. Due to low magnetic field and limited acquisition time, MR images do not always show the target clearly. Sometimes, assistance of CT images is helpful for the navigation to the target. The shape of the liver within the surgical procedure is different from that of preoperative CT images due to the patient position for the convenience of surgery. It is quite difficult to match the images accuracy during surgery. In this paper, we have proposed a method to improve the registration accuracy of images with an open MR scanner and preoperative CT images of the liver. The method includes three parts. Firstly a semiautomatic method is used to extract the liver from MR and CT images as region of interest (ROI). Then, an affine registration is used to match the images roughly. Finally, BSpline-based nonrigid registration is applied. The results are found to be satisfactory with visual inspection by experts and with evaluation by the distance of two liver surfaces, while comparing with other methods.

Original languageEnglish
Title of host publicationBiomedical Image Registration - Third International Workshop, WBIR 2006, Proceedings
PublisherSpringer Verlag
Pages289-296
Number of pages8
ISBN (Print)3540356487, 9783540356486
DOIs
Publication statusPublished - 2006
Event3rd International Workshop on Biomedical Image Registration, WBIR 2006 - Utrecht, Netherlands
Duration: 9 Jul 200611 Jul 2006

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume4057 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference3rd International Workshop on Biomedical Image Registration, WBIR 2006
Country/TerritoryNetherlands
CityUtrecht
Period9/07/0611/07/06

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