New apparatus with high radiation energy between 320 to 460 nm: physical description and dermatological applications
A new apparatus (UVASUN 5000) is presented with high radiation energy between 320 to 460 nm. The radiator is a specially developed source for high uv-A intensity, housing a quartz bulb with a mixture of argon, mercury and metal-halides. The uv-A energy in the range of 320 to 400 nm is about 84% of the total radiation energy. Effects of very high doses of uv-A on human skin were studied. Following single uv-A applications the minimal tanning dose uv-A (MTD) and the immediate pigment darkening (IPD) dose of uv-A were established. Repeated exposure to this uv-A delivering system yields long lasting dark brown skin pigmentation without any clinical or histological signs of sunburn (uv-B) damage, epidermal hyperplasia or thickening of the stratum corneum. Minimal therapeutic results were seen in the phototherapy of vitiligo and inflammatory acne.
- OSTI ID:
- 5941189
- Journal Information:
- J. Invest. Dermatol.; (United States), Vol. 76:1
- Country of Publication:
- United States
- Language:
- English
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47 OTHER INSTRUMENTATION
IRRADIATION DEVICES
DESIGN
RADIOTHERAPY
SIDE EFFECTS
SKIN
BIOLOGICAL RADIATION EFFECTS
DOSE-RESPONSE RELATIONSHIPS
ERYTHEMA
NEAR ULTRAVIOLET RADIATION
BIOLOGICAL EFFECTS
BODY
ELECTROMAGNETIC RADIATION
MEDICINE
NUCLEAR MEDICINE
ORGANS
RADIATION EFFECTS
RADIATIONS
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SYMPTOMS
THERAPY
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