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CardioVascular and Interventional Radiology
Published in: CardioVascular and Interventional Radiology 10/2017

01-10-2017 | Clinical Investigation

Comparison Between CT and MR Images as More Favorable Reference Data Sets for Fusion Imaging-Guided Radiofrequency Ablation or Biopsy of Hepatic Lesions: A Prospective Study with Focus on Patient’s Respiration

Authors: Dong Ik Cha, Min Woo Lee, Tae Wook Kang, Young-Taek Oh, Ja-Yeon Jeong, Jung-Woo Chang, Jiwon Ryu, Kyong Joon Lee, Jaeil Kim, Won-Chul Bang, Dong Kuk Shin, Sung Jin Choi, Dalkwon Koh, Kyunga Kim

Published in: CardioVascular and Interventional Radiology | Issue 10/2017

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Abstract

Purpose

To identify the more accurate reference data sets for fusion imaging-guided radiofrequency ablation or biopsy of hepatic lesions between computed tomography (CT) and magnetic resonance (MR) images.

Materials and Methods

This study was approved by the institutional review board, and written informed consent was received from all patients. Twelve consecutive patients who were referred to assess the feasibility of radiofrequency ablation or biopsy were enrolled. Automatic registration using CT and MR images was performed in each patient. Registration errors during optimal and opposite respiratory phases, time required for image fusion and number of point locks used were compared using the Wilcoxon signed-rank test.

Results

The registration errors during optimal respiratory phase were not significantly different between image fusion using CT and MR images as reference data sets (p = 0.969). During opposite respiratory phase, the registration error was smaller with MR images than CT (p = 0.028). The time and the number of points locks needed for complete image fusion were not significantly different between CT and MR images (p = 0.328 and p = 0.317, respectively).

Conclusion

MR images would be more suitable as the reference data set for fusion imaging-guided procedures of focal hepatic lesions than CT images.
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Metadata
Title
Comparison Between CT and MR Images as More Favorable Reference Data Sets for Fusion Imaging-Guided Radiofrequency Ablation or Biopsy of Hepatic Lesions: A Prospective Study with Focus on Patient’s Respiration
Authors
Dong Ik Cha
Min Woo Lee
Tae Wook Kang
Young-Taek Oh
Ja-Yeon Jeong
Jung-Woo Chang
Jiwon Ryu
Kyong Joon Lee
Jaeil Kim
Won-Chul Bang
Dong Kuk Shin
Sung Jin Choi
Dalkwon Koh
Kyunga Kim
Publication date
01-10-2017
Publisher
Springer US
Published in
CardioVascular and Interventional Radiology / Issue 10/2017
Print ISSN: 0174-1551
Electronic ISSN: 1432-086X
DOI
https://doi.org/10.1007/s00270-017-1666-5

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