Results of the trials and light delivery evaluation on low-level laser therapy of acute and chronic pain

Elena V. Stoykova; Tatiana Roeva; Kremena S. Petrova; Todor S. Petrov; Nikolai Minkovski

doi:10.1117/12.519585

4 November 2003 Results of the trials and light delivery evaluation on low-level laser therapy of acute and chronic pain

Elena V. Stoykova, Tatiana Roeva, Kremena S. Petrova, Todor S. Petrov, Nikolai Minkovski

Author Affiliations +

Proceedings Volume 5226, 12th International School on Quantum Electronics: Laser Physics and Applications; (2003) https://doi.org/10.1117/12.519585
Event: 12th International School on Quantum Electronics Laser Physics and Applications, 2002, Varna, Bulgaria

Abstract

Although the low-level laser therapy (LLLT) has been accepted in the clinical practice, its efficiency is still questionable because of the unclear mechanisms of LLLT action. This work presents the results of LLLT applied to volunteers who need recovery from trauma or suffer from rheumatic diseases, inflammatory disorders, etc. The control group we used for comparison consisted of patients being treated by conventional therapy that included massage and acupuncture needles. The effectiveness of the LLLT was graded under four categories. Short-term and long-term side effects as well as conditions responding only to LLLT were recorded. The successful treatments were up to 70%, which coincided with the result of the control group. The LLLT was performed with a GaAs laser system provided with additional set of six light CW emitting diodes to scan a larger area of a tissue surface. To evaluate the light delivery inside the tissue, the spatial energy distribution within the laser beam was measured with a CCD camera. On its basis, the light dose absorbed in the tissue was calculated both in the boundary layer under the surface and in depth using a reduced variance Monte-Carlo code.

Citation Download Citation

Elena V. Stoykova, Tatiana Roeva, Kremena S. Petrova, Todor S. Petrov, and Nikolai Minkovski "Results of the trials and light delivery evaluation on low-level laser therapy of acute and chronic pain", Proc. SPIE 5226, 12th International School on Quantum Electronics: Laser Physics and Applications, (4 November 2003); https://doi.org/10.1117/12.519585

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