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Proceedings Paper

Advances in radio frequency tumor ablation therapy: technical considerations, strategies for increasing coagulation necrosis volume, and preliminary clinical results
Author(s): S. Nahum Goldberg M.D.; G. Scott Gazelle M.D.
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Paper Abstract

Radiofrequency (RF) tumor ablation has been demonstrated as a reliable method for creating thermally induced coagulation necrosis using either a percutaneous approach with image- guidance or direct surgical application of thin electrodes into treated tissues. Early clinical trials with this technology have studied the treatment of hepatic, cerebral, and bony malignancies. The extent of coagulation necrosis induced with conventional monopolar radiofrequency electrodes is dependent on overall energy deposition, the duration of RF application, and RF electrode tip length and gauge. This article will discuss these technical considerations with the goal of defining optimal parameters for RF ablation. Strategies to further increase induced coagulation necrosis including: multiprobe and bipolar arrays, and internally-cooled RF electrodes, with or without pulsed-RF or cluster technique will be presented. The development and laboratory results for many of these radiofrequency techniques, initial clinical results, and potential biophysical limitations to RF induced coagulation, such as perfusion mediated tissue cooling (vascular flow) will likewise be discussed.

Paper Details

Date Published: 2 April 1998
PDF: 11 pages
Proc. SPIE 3249, Surgical Applications of Energy, (2 April 1998); doi: 10.1117/12.304334
Show Author Affiliations
S. Nahum Goldberg M.D., Massachusetts General Hospital (United States)
G. Scott Gazelle M.D., Massachusetts General Hospital (United States)

Published in SPIE Proceedings Vol. 3249:
Surgical Applications of Energy
Thomas P. Ryan, Editor(s)

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