Share Email Print

Proceedings Paper

Canine transurethral laser prostatectomy using a rotational technique
Author(s): Douglas M. Cromeens D.V.M.; Douglas E. Johnson M.D.
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Conventional radical prostatectomy in the dog has historically been attended by unacceptably high incidence of urinary incontinence (80 - 100%). Ablation of the prostate can be accomplished in the dog by transurethral irradiation of the prostate with the Nd:YAG laser and a laterally deflecting fiber. Exposure has ranged between 40 and 60 watts for 60 seconds at 4 fixed locations. Although prostatectomies performed with the above described technique offers significant advantage over conventional prostatectomies, the high power density at each location can result in small submucosal explosions (`popcorn effect') that increase the potential for bleeding and rupture of the prostatic capsule. We describe a new technique in which the energy is applied continuously by a laser fiber rotating around a central point. Delivering 40 watts of Nd:YAG energy for 4 minutes using a new angle-delivery device (UrotekTM), we produced results comparable to those of other previously reported techniques in the canine model with two added advantages: (1) a more even application of heat resulting in no `popcorn' effect and (2) a more reliably predictable area of coagulative necrosis within a given axial plane. This technique should provide additional safety for the veterinary surgeon performing visual laser ablation of the prostate in the dog.

Paper Details

Date Published: 12 May 1995
PDF: 4 pages
Proc. SPIE 2395, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems V, (12 May 1995); doi: 10.1117/12.209058
Show Author Affiliations
Douglas M. Cromeens D.V.M., Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Douglas E. Johnson M.D., St. Joseph Hospital (United States)

Published in SPIE Proceedings Vol. 2395:
Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems V
R. Rox Anderson M.D.; Graham M. Watson M.D.; Rudolf W. Steiner; Douglas E. Johnson M.D.; Stanley M. Shapshay M.D.; Michail M. Pankratov; George S. Abela M.D.; Lawrence S. Bass M.D.; John V. White M.D.; Rodney A. White M.D.; Kenneth Eugene Bartels D.V.M.; Lloyd P. Tate V.D.M.; C. Thomas Vangsness M.D., Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?