| Autor: |
Pei-Kai Hung, Thomas Waitao Chu, Ren-Yeu Tsai, Chien-Wei Kung, Sung-Jan Lin, Chung-Ming Chen |
| Jazyk: |
angličtina |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
Dermatologica Sinica, Vol 33, Iss 3, Pp 142-145 (2015) |
| Druh dokumentu: |
article |
| ISSN: |
1027-8117 |
| DOI: |
10.1016/j.dsi.2015.01.002 |
| Popis: |
Background/Objective: The conventional approach to evaluate female pattern hair loss (FPHL) is to visually inspect and score images of balding area (BA). However, visual estimates vary widely among different physicians, and may hinder objective assessment of hair loss and subsequent treatment response. For this reason, we propose a quantitative method using a computer-aided imaging system to help physicians evaluate the severity of FPHL clinically. Methods: We use a series of digital image processing techniques to measure the width of central balding area of FPHL. A total of 184 photos were collected form 33 Chinese women with FPHL (stages I-2 to II-2 on the Savin scale). Each photograph underwent standardized exposure correction. The balding areas were detected through this computer system and then transformed into an equivalent ellipse by principal component analysis. The width of ellipse [balding width (BW)] was measured. Spearman's rank correlation was used to detect the correlation between our measurements and clinical staging. Results: Exposure correction resulted in a 16.97% (|BWcorrected − BWoriginal|/BWcorrected) difference in BW. The average BW was 54.98 mm in all patients, 25.79 mm in type I-2 patients, 37.41 mm in I-3, 54.08 mm in I-4, 72.10 mm in II-1, and 85.53 mm in II-2. The values of BW were correlated with Savin scale stages clinically (rBW = 0.967), which was significant statistically (p |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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