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Proceedings Paper

Results of the trials and light delivery evaluation on low-level laser therapy of acute and chronic pain
Author(s): Elena V. Stoykova; Tatiana Roeva; Kremena S. Petrova; Todor S. Petrov; Nikolai Minkovski
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Paper 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.

Paper Details

Date Published: 4 November 2003
PDF: 5 pages
Proc. SPIE 5226, 12th International School on Quantum Electronics: Laser Physics and Applications, (4 November 2003); doi: 10.1117/12.519585
Show Author Affiliations
Elena V. Stoykova, Central Lab. for Optical Storage and Processing of Information (Bulgaria)
Tatiana Roeva, Shoumen Univ. Konstantin Preslavski (Bulgaria)
Kremena S. Petrova, Central Lab. for Optical Storage and Processing of Information (Bulgaria)
Todor S. Petrov, Institute of Solid State Physics (Bulgaria)
Nikolai Minkovski, Institute of Solid State Physics (Bulgaria)


Published in SPIE Proceedings Vol. 5226:
12th International School on Quantum Electronics: Laser Physics and Applications

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