OCT-guided TMR

John A. Viator; Kenton W. Gregory M.D.

doi:10.1117/12.386296

17 May 2000 OCT-guided TMR

Proceedings Volume 3907, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems X; (2000) https://doi.org/10.1117/12.386296
Event: BiOS 2000 The International Symposium on Biomedical Optics, 2000, San Jose, CA, United States

Abstract

Transmyocardial revascularization (TMR) has been investigated as a means of reperfusing ischemic heart tissue by introducing channels in the myocardium. In percutaneous TMR (P TMR), the channels are made from within the left ventricle by introducing an excimer laser catheter via the femoral artery. There is currently no means of determining the limits of ablation in P TMR so that the epicardium is not perforated. We used an optical coherence tomography (OCT) signal to detect the epicardial surface during excimer laser ablation of the myocardium in porcine hearts. A XeCl excimer laser operating at 308 nm with a pulse duration of 125 - 200 ns and a pulse energy of 21/mJ at 25 Hz was used to ablate channels in porcine hearts ex vivo. The OCT system was connected to an optical fiber guidewire that was introduced coaxially with the ablation fiber. The OCT signal was monitored on a computer during the ablation process. The epicardial surface was detected within 600 micrometer of perforation.

Citation Download Citation

John A. Viator and Kenton W. Gregory M.D. "OCT-guided TMR", Proc. SPIE 3907, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems X, (17 May 2000); https://doi.org/10.1117/12.386296

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available