Red Blood Cell Responses To Pulsed Laser Irradiation

Oon Tian Tan; Paul Morrison; Stephen Murray; E. F. MacNichol Jr.

doi:10.1117/12.952044

11 September 1989 Red Blood Cell Responses To Pulsed Laser Irradiation

Oon Tian Tan, Paul Morrison, Stephen Murray, E. F. MacNichol Jr.

Proceedings Volume 1066, Laser Surgery: Advanced Characterization, Therapeutics, and Systems; (1989) https://doi.org/10.1117/12.952044
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

Abstract

Laser parameters have recently been optimized to specifically destroy cutaneous blood vessels and at the same time, spare injury to adjacent epidermal and dermal structures such as collagen. When these parameters have been used in clinical treatmeng, it has been observed that electron-lucent spherules of 600-800 Å diameter have consistently been present in these irradiated red blood cells (RBC) producing de-st'ruction of abnormal port wine stain blood vessels. It has been postulated that these changes were due to oxygen released during laser irradiation with the implication that the oxygenated status of the blood affected. the clinical outcome. This study demonstrates that this clinically related RBC morphology is independent of the oxygenated status of the blood. Microspectrophotometric measurements of absorbance across individual RBC of laser irradiated oxygenated and deoxygenated erythrocytes as well as those rapidly heated to temperatures greater than 100°C confirm that these electron-lucent structures are due to a phase change occurring in the RBC and not to oxygen release.

Citation Download Citation

Oon Tian Tan, Paul Morrison, Stephen Murray, and E. F. MacNichol Jr. "Red Blood Cell Responses To Pulsed Laser Irradiation", Proc. SPIE 1066, Laser Surgery: Advanced Characterization, Therapeutics, and Systems, (11 September 1989); https://doi.org/10.1117/12.952044

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