Porcine skin thermal response to near-IR lasers using a fast infrared camera

Clarence Cain, Thomas Milner, Sergey Telenkov, Kurt Schuster, Kevin Stockton, David Stolarski, Chris Condit, Benjamin A. Rockwell, William P. Roach, A. J. Welch, Steven L. Jacques, William P. Roach
2004 Laser Interaction with Tissue and Cells XV  
We have measured the minimum visible lesion (MVL) thresholds for porcine skin and determined the ED 50 for exposures at 1314 nm for 0.35 ms laser pulses. An in-vivo pigmented animal model, Yucatan mini-pig (Sus scrofa domestica), was used in this study. We also have measured the 2-D thermal response using a high-speed (100 frames per second) infrared camera for single-pulse temperature recordings for Gaussian beams of 1 mm diameter. In Vitro samples of the same pig skin were used for
more » ... s of the optical properties (absorption coefficient, ga, and reduced scattering coefficient p") as a function of wavelength around 1315 nm wavelength. A measured surface temperature distribution for one IR laser pulse of 0.37J at a spot size of 1.3 mm diameter gave approximately a 430 C rise at a hot spot. Computed temperature distributions as a function of time and space are presented and compared with the measured surface temperatures.
doi:10.1117/12.529356 fatcat:kjmiviry4vh37bz34ffrf35kai