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TRANSMITTANCE OF NONIONIZING RADIATION IN HUMAN TISSUES *
Author(s) -
Wan San,
Parrish John A.,
Anderson R. Rox,
Madden Michael
Publication year - 1981
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1981.tb09063.x
Subject(s) - transmittance , wavelength , visible spectrum , materials science , scrotum , radiation , absorption (acoustics) , optics , integrating sphere , optoelectronics , anatomy , medicine , physics
— Spectral transmittance of 400–865 nm radiation through various human structures, including the skull with scalp, the chest wall, abdominal wall and scrotum, is presented. There is essentially no visible light of wavelengths shorter than 500 nm transmitted through the chest or the abdominal wall. In contrast, 10 −5 –10 −4 of blue light can reach the brain and testes. Transmittance of all tissues increases progressively with wavelength from 600 to 814nm. The maximal transmittances are 10 −2 –10 −1 for skulls and scrota, and 10 −3 –10 −2 for chest and abdominal walls. Tissue thickness, optical absorption and scattering are major influencing factors.