Share Email Print
cover

Proceedings Paper

Cardiac tissue characterization using near-infrared spectroscopy
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Cardiac tissue from swine and canine hearts were assessed using diffuse reflectance near-infrared spectroscopy (NIRS) ex vivo. Slope measured between 800-880 nm reflectance was found to reveal differences between epicardial fat and normal myocardium tissue. This parameter was observed to increase monotonically from measurements obtained from the onset of radiofrequency ablation (RFA). A sheathe-style fiber optic catheter was then developed to allow real-time sampling of the zone of resistive heating during RFA treatment. A model was developed and used to extract changes in tissue absorption and reduced scattering based on the steady-state diffusion approximation. It was found that key changes in tissue optical properties occur during application of RF energy and can be monitored using NIRS. These results encourage the development of NIRS integrated catheters for real-time guidance of the cardiac ablation treatment.

Paper Details

Date Published: 4 March 2014
PDF: 7 pages
Proc. SPIE 8926, Photonic Therapeutics and Diagnostics X, 89263N (4 March 2014); doi: 10.1117/12.2036320
Show Author Affiliations
Rajinder Singh Moon, Columbia Univ. (United States)
Christine P. Hendon, Columbia Univ. (United States)


Published in SPIE Proceedings Vol. 8926:
Photonic Therapeutics and Diagnostics X
Bernard Choi; Nikiforos Kollias; Haishan Zeng; Hyun Wook Kang; Brian J. F. Wong; Justus F. Ilgner; Guillermo J. Tearney; Kenton W. Gregory; Laura Marcu; Andreas Mandelis, Editor(s)

© SPIE. Terms of Use
Back to Top