Electronic Resource
Oxford, UK
:
Blackwell Science Ltd
Journal of the European Academy of Dermatology and Venereology
19 (2005), S. 0
ISSN:
1468-3083
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Medicine
Notes:
Objective The aim of the study was to investigate the state of ultraviolet (UV) A dosimetry in photopatch testing centres in Europe.Background It has been acknowledged that a widespread disparity exists in the way photopatch testing is carried out in different countries throughout Europe. This prompted the formation of a European taskforce that developed a consensus methodology. One issue that was not addressed directly was that of UVA dosimetry, which clearly impacts on the consistency of the clinical results.Study design Ten UV meters from photopatch test centres throughout Europe were set up at a reproducible position from a photopatch test light source containing UVA fluorescent lamps and the irradiances were noted from each meter. One meter served as a reference meter with calibration carried out in an optical laboratory traceable to the National Physical Laboratory.Results The mean of all the measurements was 5.74 mW/cm2 with a SD of 0.36 mW/cm2. Expanded uncertainty at 95% confidence level was 12%.Conclusions It is desirable that meter calibration should have an accuracy of the order of ±10%. The variation in recorded values among the 10 meters investigated was within acceptable limits. The meter must be calibrated using a similar light source to that used in the phototest equipment, in this case a UVA fluorescence lamp.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1468-3083.2005.01125.x
Permalink
|
Location |
Call Number |
Limitation |
Availability |
