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Summary: IMAGING OF PORT WINE STAIN LESIONS USING A MULTI-SENSOR
PHOTOACOUSTIC PROBE
John A. Viator, Steven L. Jacques
Department of Dermatology
Oregon Health & Science University
Portland, Oregon 97239
Email: viatorj@ohsu.edu
Guillermo Aguilar
Department Mechanical Engineering
University of California
Riverside, California, 92521
gaguilar@engr.ucr.edu
ABSTRACT
Successful treatment of port wine stain (PWS) birthmarks
in human skin utilizes cryogen spray cooling (CSC) in conjunc-
tion with laser treatment. CSC pre-cools the epidermis to protect
it from subsequent laser irradiation which raises the tempera-
ture of both the epidermis and the deeper PWS. As the epidermal
temperature is depressed by cryogen, damage to the skin sur-
face is minimized while the PWS reaches temperatures sufficient
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