Temperature distributions in porcine orbital tissues following the use of CO2 and Nd:YAG lasers.
Temperature distributions in the orbital tissues of a live porcine model were obtained during and immediately following the application of CO2 and Nd:YAG (both contact and noncontact) laser irradiation to muscle tissue adjacent to the optic nerve. Temperatures were measured with thermocouples and an infrared-sensitive thermographic camera system. Significant thermal spread was observed only in the case of the contact Nd:YAG laser, along with histologic evidence of damage to the optic nerve. After the laser was switched off, the target cooled with a time constant on the order of 10 seconds.
Chedid
M K
MK
Department of Neurosurgery and Neurosurgery Research, Allegheny General Hospital, Pittsburgh, Pa 15212.
Handy
F F
FF
Wilkinson
D A
DA
Kennerdell
J S
JS
Maroon
J C
JC
D000273:Adipose Tissue / Q000503:physiopathology* / Q000601:surgery; D000818:Animals; D001831:Body Temperature; D053685:Laser Therapy / Q000009:adverse effects* / Q000295:instrumentation; D009801:Oculomotor Muscles / Q000503:physiopathology* / Q000601:surgery; D009915:Orbit / Q000503:physiopathology / Q000601:surgery; D013552:Swine; D013817:Thermography