Semiconductor laser applications in rheumatology

Mihail-Lucian Pascu; S. Suteanu

doi:10.1117/12.230032

15 January 1996 Semiconductor laser applications in rheumatology

Mihail-Lucian Pascu, S. Suteanu

Proceedings Volume 2630, Effects of Low-Power Light on Biological Systems; (1996) https://doi.org/10.1117/12.230032
Event: BiOS Europe '95, 1995, Barcelona, Spain

Abstract

Two types of laser diode (LD) based equipment for rheumatology are introduced. The first is a portable device which contains single LD emitting at 890 nm laser pulses (time full width 100 nsec) of reprate tunable within (0.5 - 1.5) kHz; the laser beam average power is 0.7 mW at 1 kHz reprate. The second is computer controlled, contains one HeNe laser and 5 LD allowing 6 modes of patient irradiation (placebo effect evaluation included). HeNe laser works in cw at 632.8 nm; the LD works each as described for the portable equipment. HeNe and LD beams are superposed so that HeNe laser spot in the irradiation plane has a 60 mm diameter and the LD spots covers a 50 mm diameter disc centered on the HeNe laser spot. Clinical applications using the second type of equipment are reported; 1287 patients were treated between October 1991 and October 1994. Female/male ratio was 4:1 and their age distribution was between 18 and 85 years. The average number of exposures was 10 and the mean exposure time was 7 minutes. Studies were made on the treatment of rheumatoid arthritis, seronegative arthritis, degenerative joint diseases, abarticular rheumatism, osteoporosis pain and pains and edema after fractures.

Citation Download Citation

Mihail-Lucian Pascu and S. Suteanu "Semiconductor laser applications in rheumatology", Proc. SPIE 2630, Effects of Low-Power Light on Biological Systems, (15 January 1996); https://doi.org/10.1117/12.230032

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KEYWORDS

Helium neon lasers

Laser therapeutics

Semiconductor lasers

Rheumatology

Pulsed laser operation

Silicon

Spine

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