RADIOFREQUENCY HEATED BIPOLAR ENERGY IN A RTERIES - EXPERIMENTAL RESULTS WITH A NEW CATHETER

Citation
C. Simon et al., RADIOFREQUENCY HEATED BIPOLAR ENERGY IN A RTERIES - EXPERIMENTAL RESULTS WITH A NEW CATHETER, RoFo. Fortschritte auf dem Gebiete der Rontgenstrahlen und der neuenbildgebenden Verfahren, 166(3), 1997, pp. 248-253
Citations number
22
Language
TEDESCO
art.tipo
Article
Categorie Soggetti
Radiology,Nuclear Medicine & Medical Imaging
ISSN journal
0936-6652
Volume
166
Issue
3
Year of publication
1997
Pages
248 - 253
Database
ISI
SICI code
0936-6652(1997)166:3<248:RHBEIA>2.0.ZU;2-T
Abstract
Purpose: To evaluate the effects of radiofrequency heated bipolar prob es on the human arterial wall. Methods: Under standardised conditions, lesions were set on the inner layer of a piece of human cadaver arter ial wall, using a radiofrequency-heated bipolar catheter. These lesion s were measured and described both macroscopically and microscopically . Lesion size, applied energy levels and application conditions were c orrelated. Results: The size of a lesion depended significantly on the size of the catheter, angle and pressure of catheter application (p < 0.05) and length of impulse (p = 0.002). There was no influence from the energy level employed. It proved impossible to treat calcified pla ques. The depth of a lesion depended on the angle of catheter applicat ion only No perforations were seen. Conclusions: Radiofrequency-heated bipolar catheters ablate the tissue of the arterial wall. Increasing tissue resistance resulting from higher energy levels prevents perfora tion in the experimental set-up. Calcified plaques cannot be treated b y this method.