NDLI: Deposition of radon progeny on skin surfaces and resulting radiation doses in radon therapy

Content Provider	Springer Nature Link
Author	Tempfer, H. Hofmann, W. Schober, A. Lettner, H. Dinu, A. L.
Copyright Year	2010
Abstract	In the Gastein valley, Austria, radon-rich thermal water and air have been used for decades for the treatment of various diseases. To explore the exposure pathway of radon progeny adsorbed to the skin, progeny activities on the skin of patients exposed to thermal water (in a bathtub) and hot vapour (in a vapour chamber) were measured by alpha spectrometry. Average total alpha activities on the patients’ skin varied from 1.2 to 4.1 Bq/cm2 in the bathtub, and from 1.1 to 2.6 Bq/cm2 in the vapour bath. Water pH-value and ion concentration did affect radon progeny adsorption on the skin, whereas skin greasiness and blood circulation did not. Measurements of the penetration of deposited radon progeny into the skin revealed a roughly exponential activity distribution in the upper layers of the skin. Based on the radon progeny surface activity concentrations and their depth distributions, equivalent doses to different layers of the skin, in particular to the Langerhans cells located in the epidermis, ranged from 0.12 mSv in the thermal bath to 0.33 mSv in the vapour bath, exceeding equivalent doses to the inner organs (kidneys) by inhaled radon and progeny by about a factor 3, except for the lung, which receives the highest doses via inhalation. These results suggest that radon progeny attachment on skin surfaces may play a major role in the dosimetry for both thermal water and hot vapour treatment schemes.
Starting Page	249
Ending Page	259
Page Count	11
File Format	PDF
ISSN	0301634X
Journal	Radiation and Environmental Biophysics
Volume Number	49
Issue Number	2
e-ISSN	14322099
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-03-17
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ecosystems Environmental Physics Environmental Monitoring/Analysis Biophysics and Biological Physics Effects of Radiation/Radiation Protection
Content Type	Text
Resource Type	Article
Subject	Biophysics Environmental Science Radiation

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