THE PHOTOTRICHOGRAM - ANALYSIS OF SOME TECHNICAL FACTORS OF VARIATION

Citation
Djj. Vanneste et al., THE PHOTOTRICHOGRAM - ANALYSIS OF SOME TECHNICAL FACTORS OF VARIATION, Skin pharmacology, 7(1-2), 1994, pp. 67-72
Citations number
8
Categorie Soggetti
Pharmacology & Pharmacy
Journal title
ISSN journal
10110283
Volume
7
Issue
1-2
Year of publication
1994
Pages
67 - 72
Database
ISI
SICI code
1011-0283(1994)7:1-2<67:TP-AOS>2.0.ZU;2-G
Abstract
Photographic methods for hair evaluation are frequently proposed as an alternative to more invasive methods (trichogram or biopsy). The reli ability in terms of quantitative follow-up of hair growth has not been evaluated properly. We report results of comparative studies of scalp hair evaluation with various photographic methods. Statistically sign ificant findings were a better detection of scalp hairs using the orig inal enlargement x 3 as compared to x 2 (212 vs. 167 hair follicles/cm 2) and a more acceptable estimate of linear hair growth rate with 'sca lp immersion proxigraphy' (SIP) (0.317 mm/day) as compared with classi cal phototrichogram pictures where this variable was underestimated by 30% on average (0.27 mm/day). SIP-generated linear hair growth rates were very close to the micrometric method (0.37 mm/day). Therefore SIP x 3 images appear preferable for hair growth monitoring during clinic al trials.