Photoacoustic studies and selective ablation of vascular tissue using a pulsed dye laser |
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| Authors: | R. K. Al Dhahir P. E. Dyer Z. Zhu |
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| Affiliation: | (1) Department of Applied Physics, School of Engineering and Computing, University of Hull, HU6 7RX Hull, UK;(2) Present address: Department of Physics, S.W. China Teachers University, China |
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| Abstract: | The optical attenuation coefficient for human aorta has been measured in the 440–500 nm spectral region using the transient photoacoustic (thermoelastic) response produced by an excimer-laser-pumped dye laser. It is confirmed that diseased tissue has a significantly higher attenuation than normal samples in this spectral region. The maximum difference occurs at  480 nm and there is a lowering of the ablation threshold fluence for diseased tissue by a factor of 1.5 for dye laser ablation at this wavelength. |
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| Keywords: | 87 42.55 Mv 43.35 Yb 61.80 Ba |
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