Application of optical coherence tomography and high-frequency ultrasound imaging during noninvasive laser vasectomy.

Journal of Biomedical Optics
Christopher M CilipN M Fried

Abstract

A noninvasive approach to vasectomy may eliminate male fear of complications related to surgery and increase its acceptance. Noninvasive laser thermal occlusion of the canine vas deferens has recently been reported. Optical coherence tomography (OCT) and high-frequency ultrasound (HFUS) are compared for monitoring laser thermal coagulation of the vas in an acute canine model. Bilateral noninvasive laser coagulation of the vas was performed in six dogs (n=12 vasa) using a Ytterbium fiber laser wavelength of 1075 nm, incident power of 9.0 W, pulse duration of 500 ms, pulse rate of 1 Hz, and 3-mm-diameter spot. Cryogen spray cooling was used to prevent skin burns during the procedure. An OCT system with endoscopic probe and a HFUS system with 20-MHz transducer were used to image the vas immediately before and after the procedure. Vasa were then excised and processed for gross and histologic analysis for comparison with OCT and HFUS images. OCT provided high-resolution, superficial imaging of the compressed vas within the vas ring clamp, while HFUS provided deeper imaging of the vas held manually in the scrotal fold. Both OCT and high HFUS are promising imaging modalities for real-time confirmation of vas occlusion during noninvasi...Continue Reading

References

Aug 1, 1991·Fertility and Sterility·W B MillerD J Pasta
Jun 7, 2006·The Journal of Urology·Mark A BaroneJennifer Wheeler
Sep 1, 2006·Journal of Clinical Ultrasound : JCU·Thierry PuttemansDaniel Murillo
Mar 18, 2009·Lasers in Surgery and Medicine·Christopher M CilipNathaniel M Fried
Jun 24, 2009·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·William D MiddletonCary A Siegel
Aug 13, 2009·Canadian Urological Association Journal = Journal De L'Association Des Urologues Du Canada·Cole Davis, Wayne Kuang
Aug 31, 2010·Journal of Biomedical Optics·Christopher M CilipNathaniel M Fried
Oct 1, 2011·Lasers in Surgery and Medicine·Christopher M CilipNathaniel M Fried

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Citations

Mar 22, 2014·Lasers in Surgery and Medicine·Zhuoyan LiKaren M Joos
Aug 31, 2016·Burns and Trauma·Kwang Chear LeeNaiem Moiemen

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