Photonics, Volume 11, Issue 7 (July 2024) – 100 articles
Cover Story (view full-size image):
This study compared the transcutaneous target-level irradiances from the thoracic to lumbar segments of the interior spinal canal in three cadaver dogs, measured using light at four PBMT wavelengths (808 nm, 915 nm, 975 nm, and 1064 nm). Surface illumination was applied using an acupuncture treatment head in three modes: non-contact with skin removed, non-contact with skin intact, and contact with skin intact. At each position of the treatment head, the light was multiplexed among the four wavelengths at the same power setting. At a surface irradiance of ~157 mW/cm2, the intra-spinal irradiance at 1064 nm reached 0.137 ± 0.095 mW/cm2. Obtaining a dosage of PBMT-associative wavelengths of this magnitude at the level of the spinal canal may guide focused research into the transcutaneous applicability of PBMT for spinal cord injuries. View this paper
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