Penetration and mass loss rates with different energy levels in the human meniscus for the holmium:YAG laser

C. Thomas Vangsness M.D.; Bahram Ghaderi; Marshall Brustein; Vahid Sadettmanesh; Joan Hawver

doi:10.1117/12.148331

21 July 1993 Penetration and mass loss rates with different energy levels in the human meniscus for the holmium:YAG laser

C. Thomas Vangsness M.D., Bahram Ghaderi, Marshall Brustein, Vahid Sadettmanesh, Joan Hawver

Author Affiliations +

Proceedings Volume 1880, Lasers in Orthopedic, Dental, and Veterinary Medicine II; (1993) https://doi.org/10.1117/12.148331
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

Using a pulsed Holmium:YAG laser, wavelength 2.1 micrometers , the ablation rate and thermal effect were measured on human meniscal cartilage. Holding the pulsewidth and repetition rate constant, fluences per pulse were varied between 167 - 927 J/cm²/pulse for the penetration rate and between 1.7 - 100 J/cm²/pulse for the mass loss rate. The fastest ablation rate was found at 927 J/cm²/pulse for the penetration rate and at 100 J/cm²/pulse for the mass loss rate. The thresholds were 53 J/cm²/pulse and 1.36 J/cm²/pulse, respectively. The increases in ablation rate were directly proportional to increases in fluences for both methods. Histological examination showed the average lateral thermal change to be 400 - 500 micrometers and 400 - 460 micrometers , respectively, with no relation to level of fluence.

Citation Download Citation

C. Thomas Vangsness M.D., Bahram Ghaderi, Marshall Brustein, Vahid Sadettmanesh, and Joan Hawver "Penetration and mass loss rates with different energy levels in the human meniscus for the holmium:YAG laser", Proc. SPIE 1880, Lasers in Orthopedic, Dental, and Veterinary Medicine II, (21 July 1993); https://doi.org/10.1117/12.148331

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