Contrast Enhanced Phototrichogram: An Improved Non-Invasive Technique for Measurement of Scalp Hair Dynamics in Androgenetic Alopecia – Validation Study with Histology After Transverse Sectioning of Scalp Biopsies

    June 2001 in “ PubMed ”
    D. Van Neste
    TLDR CE-PTG is a better method for analyzing hair growth in androgenetic alopecia.
    The study validated the contrast enhanced phototrichogram (CE-PTG) as an improved non-invasive technique for measuring scalp hair dynamics in androgenetic alopecia (AGA). CE-PTG significantly enhanced the detection of both thin and thick hair compared to the traditional phototrichogram (PTG). It was comparable to histology in identifying hair fibers, including severely miniaturized ones, and could observe all hair growth stages. However, staging severely affected hair follicles remained challenging for both CE-PTG and histology. The study concluded that CE-PTG is a superior method for detailed analysis of hair cycling in AGA.
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