Validation of TrichoScan Technology as a Fully-Automated Tool for Evaluation of Hair Growth Parameters

    J. Gassmueller, Elisabeth Rowold, T. Frase, Betsy Hughes-Formella
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    TLDR TrichoScan® is a reliable tool for measuring hair growth, providing quicker and more consistent results than manual methods.
    In 2009, a study involving 10 patients with androgenetic alopecia validated TrichoScan®, a fully-automated tool for evaluating hair growth parameters, by comparing it to manual hair marking methods. The study found that TrichoScan® had excellent correlation with manual methods, with Pearson correlation coefficients greater than 0.89, and showed no variability in results compared to the 2.71% to 12.95% variability in manual evaluations. Despite slight systematic underestimation of total hair density and overestimation of hair thickness by TrichoScan®, these differences were consistent and could be adjusted mathematically. The study concluded that TrichoScan® is a reliable and valid tool that offers quicker, more reproducible results with a smaller margin of operator error than manual methods, and is suitable for clinical studies, as demonstrated in a trial with 34 men treated with Minoxidil. The study also noted the importance of high-quality images and adequate training for investigators to achieve accurate results.
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