Acoustic effects during bone ablation

Lou Reinisch; Robert H. Ossoff M.D.

doi:10.1117/12.147651

7 July 1993 Acoustic effects during bone ablation

Lou Reinisch, Robert H. Ossoff M.D.

Proceedings Volume 1882, Laser-Tissue Interaction IV; (1993) https://doi.org/10.1117/12.147651
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

In surgical applications of lasers, it is often necessary to know when a laser has penetrated a bone. There are many instances when it is critical to avoid damaging tissue beneath the bone. We are developing a system to monitor the ablation of bone. We have found a method to detect when the bone has been penetrated by measuring the photo acoustic signal generated by a pulsed laser. Using a transducer on samples of temporal bone and several model substances, we can see a decrease in the power spectrum near 350 kHz as softer materials is ablated. The current results are from a carbon dioxide laser operating in the super pulse mode. We are developing the technique for use with the Vanderbilt Free Electron Laser as part of our computer assisted surgery techniques program.

Citation Download Citation

Lou Reinisch and Robert H. Ossoff M.D. "Acoustic effects during bone ablation", Proc. SPIE 1882, Laser-Tissue Interaction IV, (7 July 1993); https://doi.org/10.1117/12.147651

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