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Changes in transmission spectrum of human venous blood under action of low-intensity He-Ne laser or extracorporal UV irradiation

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Abstract

At present, foolproof methods are needed for control of low-power light biomedical effects. Transmission spectra of whole blood from 108 patients were recorded before and after action of low-intensity He-Ne laser and extracorporal UV irradiation. We have observed changes in the blood transmission spectrum caused by oxygen saturation changes in venous blood. It has shown that He-Ne laser irradiation more selectively acts to venous blood than extracorporal UV irradiation.

© 2001 OSA/SPIE

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