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Proceedings Paper

LITT on canine prostates: an in-vivo study to compare the effects of different wavelengths
Author(s): Ronald Sroka; Aaron P. Perlmutter; Thomas Martin; Rolf Muschter
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Paper Abstract

Laser induced interstitial thermotherapy is a new minimally invasive procedure for the treatment of benign prostatic hyperplasia. Since high power laser diode lasers became available for clinical use a comparison of tissue effects of different wavelengths under controlled conditions is needed. In this study three different laser wavelengths were compared at output powers of 4 W and 8 W with 10 min and 90 s irradiation time, respectively, resulting in applied energies of 2700 J and 720 J. The results in both groups showed that the use of a wavelength close to the relative water absorption peak at 980 nm gave tendentiously but not significantly larger coagulated areas. Furthermore it became obvious that the use of 8 W for 90 sec results in higher maximum temperatures and larger lesions compared to the application of 4 W over a period of 10 min, although the energy used in the latter group was 4 fold higher.

Paper Details

Date Published: 17 May 1996
PDF: 4 pages
Proc. SPIE 2671, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VI, (17 May 1996); doi: 10.1117/12.240027
Show Author Affiliations
Ronald Sroka, Univ. of Munich (Germany)
Aaron P. Perlmutter, New York Hospital (United States)
Thomas Martin, New York Hospital (United States)
Rolf Muschter, Univ. of Munich (Germany)


Published in SPIE Proceedings Vol. 2671:
Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VI
C. Thomas Vangsness; Kenneth Eugene Bartels; Lawrence S. Bass; Graham M. Watson; R. Rox Anderson; R. Rox Anderson; Royice B. Everett; Douglas E. Ott; Reza S. Malek; Rodney A. White; Lloyd P. Tate; Aaron P. Perlmutter, Editor(s)

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