Theoretical analysis of equivalency of high-power diode laser (810 nm) and Nd:YAG laser (1064 nm) for coagulation of tissue: predictions for prostate coagulation

Sohi Rastegar; Steven L. Jacques; Massoud Motamedi; Beop-Min Kim

doi:10.1117/12.137454

7 August 1992 Theoretical analysis of equivalency of high-power diode laser (810 nm) and Nd:YAG laser (1064 nm) for coagulation of tissue: predictions for prostate coagulation

Sohi Rastegar, Steven L. Jacques, Massoud Motamedi, Beop-Min Kim

Author Affiliations +

Proceedings Volume 1646, Laser-Tissue Interaction III; (1992) https://doi.org/10.1117/12.137454
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

Profiles of light, temperature, and thermal damage distributions in tissue based on measured optical properties are examined theoretically for high power diode laser (810 nm) and Nd:YAG laser 1064 nm). Generally higher absorption and effectively lower optical penetration has been experimentally observed at the wavelength of diode laser as compared to that of Nd:YAG laser. Results of this study indicate that similar thermal damage volumes are expected to be obtained by the two lasers, in general. However, for same irradiation conditions a larger volume of damage and more charring near the surface is predicted when using the diode laser on prostate tissue, and similarly for myocardial tissue. Role of blood presence throughout tissue, in terms of its optical interaction, as well as the role of a small layer of blood between the laser and the tissue is also investigated for both wavelengths.

Citation Download Citation

Sohi Rastegar, Steven L. Jacques, Massoud Motamedi, and Beop-Min Kim "Theoretical analysis of equivalency of high-power diode laser (810 nm) and Nd:YAG laser (1064 nm) for coagulation of tissue: predictions for prostate coagulation", Proc. SPIE 1646, Laser-Tissue Interaction III, (7 August 1992); https://doi.org/10.1117/12.137454

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