[LILAB, a new system for superficial application of low intensity laser beams in medicine].
Laser energy densities between 1 and 4 J/cm2 evoked a significant biostimulation in human tissues. Lower energy densities had no apparent effect, but higher energy densities resulted in cell damage. In principle, low energy densities can be applied with high-energy lasers in combination with laser beam diverging lenses, or with low-power lasers in combination with scanning devices. High-energy lasers are undesirable because of their high cost. Low-energy lasers in combination with conventional scanners also suffer from high cost, and these scanners have another major disadvantage: the energy density at the edge of the application field may be up to five times as great as in the center. A new laser beam distribution system for medical applications is introduced here. Because of its moderate price it is well-suited for use with low-energy lasers. Any desired geometrical shape of the application field is easily created, and with a homogeneous energy density.
Exp. Orthopädie und Biomechanik Philipps-Universität Marburg.
A
A
Sommer
R P
RP
Franke
D004867:Equipment Design; D006801:Humans; D053685:Laser Therapy; D007834:Lasers / Q000009:adverse effects; D011879:Radiotherapy Dosage; D014647:Varicose Ulcer / Q000532:radiotherapy; D014945:Wound Healing / Q000528:radiation effects