MR-compatible RF ablation system for online treatment monitoring using MR thermometry

RF ablation (RFA) is used for thermal ablation of tumors in which the RF electrode is placed in the tissue under image-guidance. Because of the good tumor visibility and the lack of ionizing radiation, MR-guided RFA is the method of choice. Additionally, with the help of MR thermometry the RF ablati...

Full description

Saved in:
Bibliographic Details
Published in:2010 Annual International Conference of the IEEE Engineering in Medicine and Biology 2010-01, p.1601-1604
Main Authors: Will, K, Krug, J, Jungnickel, K, Fischbach, F, Ricke, J, Rose, G, Omar, A
Format: Article
Language:English
Subjects:
Frequency measurement
Generators
Imaging
Low pass filters
Power harmonic filters
Radio frequency
Tumors
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:RF ablation (RFA) is used for thermal ablation of tumors in which the RF electrode is placed in the tissue under image-guidance. Because of the good tumor visibility and the lack of ionizing radiation, MR-guided RFA is the method of choice. Additionally, with the help of MR thermometry the RF ablation can be monitored during the intervention. Unfortunately, the imaging of an MR scanner is highly sensitive to interferences caused by external electrical signals. In this paper the high-power RF ablation signal of a commercially available medical therapy device is made MR-compatible. A design of a low-pass filter with high-power compatibility is presented. The filter performance is demonstrated by means of simulations and measurements.
ISSN:1094-687X
1558-4615
DOI:10.1109/IEMBS.2010.5626664