Volume 3 Supplement 1

Current and Future Applications of Focused Ultrasound 2014. 4th International Symposium: abstracts

Open Access

Usefulness of 3D slicer for the planning and monitoring of hepatocellular carcinoma treatment using FUS

  • Nobutaka Doba1,
  • Hiroyuki Fukuda1,
  • Kazushi Numata1,
  • Ayako Takeda1,
  • Yoshiharu Hao1,
  • Akito Nozaki1,
  • Makoto Chuma1,
  • Masaaki Kondo1,
  • Shin Maeda1,
  • Shigeo Takebayash1,
  • Akira Kobayashi1,
  • Juichi Tokuda1 and
  • Katsuaki Tanaka1
Journal of Therapeutic Ultrasound20153(Suppl 1):O84

DOI: 10.1186/2050-5736-3-S1-O84

Published: 30 June 2015

Background/introduction

FUS is a noninvasive treatment method, as complete coagulation necrosis is achieved without the insertion of any instruments. However, FUS monitor has the poor visualization because of the presence of the multi-reflections, rib shadows and the emergence of the hyperecho after the FUS treatment. 3D Slicer imaging is a diagnostic imaging support system that can provide the same cross-sectional MPR images on the same monitor screen using DICOM volume data from MRI which are not influenced by those artifacts. The purpose of this study was to utilize an interventional navigation system designed for FUS assisted by 3D Slicer was proposed, and a phantom study was carried out to assess the proposed system.

Methods

The FUS system (Mianyang Haifu Tech) was used under ultrasound guidance. In this system, the open-source navigation software is connected together images using an open network communication protocol, OpenIGTLink. A Polaris Vicra optical tracker (Northern Digital, Ontario, Canada) was used. MRI scans (Signa HDX 3.0T system; GE Healthcare) were performed, and 3D Slicer was customized to combine MR images for the navigation.

Testing was performed using an abdominal phantom (CIRS Model057, Norfolk, VA).

Results and conclusions

3D slicer could make the multiplanar reconstruction images of MRI displayed in the same sections of US. The synchronous movements of the same sections of US and MRI were shown in real time. Performance tests of phantom show that the registration error of the system was 2.2 ± 1.8 mm within the liver (n=12). Conclusion: 3D Slicer imaging is useful for FUS treatment for HCC, compensating for the occasionally poor visualization provided by US monitor.
https://static-content.springer.com/image/art%3A10.1186%2F2050-5736-3-S1-O84/MediaObjects/40349_2015_Article_145_Fig1_HTML.jpg
Figure 1

The tumor therapy system. A 2-5 MHz imaging probe was positioned in the center of the FUS transducer and was mounted in a reservoir of degassed water. Phantom was positioned in contact with the degassed water.

https://static-content.springer.com/image/art%3A10.1186%2F2050-5736-3-S1-O84/MediaObjects/40349_2015_Article_145_Fig2_HTML.jpg
Figure 2

An optical tracker (Northern Digital, Ontario, Canada) was attached outside of a reservoir of degassed water and followed by Polaris Vicra.

https://static-content.springer.com/image/art%3A10.1186%2F2050-5736-3-S1-O84/MediaObjects/40349_2015_Article_145_Fig3_HTML.jpg
Figure 3

The cystic lesion of the phantom was depicted in the US monitor of the tumor therapy system.

https://static-content.springer.com/image/art%3A10.1186%2F2050-5736-3-S1-O84/MediaObjects/40349_2015_Article_145_Fig4_HTML.jpg
Figure 4

3D slicer image of MRI with high intensity area was displayed in a manner resembling conventional monitor US to assist the FUS treatment.

Authors’ Affiliations

(1)
Yokohama City University

Copyright

© Doba et al; licensee BioMed Central Ltd. 2015

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

Advertisement