In-situ tomographic observation of tissue surface during laser ablation

Masamitsu Haruna; Ryuh Konoshita; Masato Ohmi; Naomi Kunizawa; Mayumi Miyachi

doi:10.1117/12.434717

9 July 2001 In-situ tomographic observation of tissue surface during laser ablation

Masamitsu Haruna, Ryuh Konoshita, Masato Ohmi, Naomi Kunizawa, Mayumi Miyachi

Proceedings Volume 4257, Laser-Tissue Interaction XII: Photochemical, Photothermal, and Photomechanical; (2001) https://doi.org/10.1117/12.434717
Event: BiOS 2001 The International Symposium on Biomedical Optics, 2001, San Jose, CA, United States

Abstract

In laser ablation of tissues, tomography of the tissue surface is necessary for measurement of the crater depth and observation of damage of the surrounding tissue. We demonstrate here OCT images of craters made by UV laser ablation of different tissues. The maximum depth of a crater is found among several OCT images, and then the ablation rate is determined. The conventional OCT of the spatial resolution of 15 μm was used in our experiment, but OCT of the resolution of the order of 1 μm is required because the ablation rate is usually a few microns per pulse. Such a high-resolution OCT is also demonstrated in this paper, where the light source is a halogen lamp. Combination of laser ablation and OCT will lead to in situ tomographic observation of tissue surface during laser ablation, which should allow us to develop new laser surgeries.

Citation Download Citation

Masamitsu Haruna, Ryuh Konoshita, Masato Ohmi, Naomi Kunizawa, and Mayumi Miyachi "In-situ tomographic observation of tissue surface during laser ablation", Proc. SPIE 4257, Laser-Tissue Interaction XII: Photochemical, Photothermal, and Photomechanical, (9 July 2001); https://doi.org/10.1117/12.434717

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