{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T05:24:53Z","timestamp":1787894693846,"version":"build-2784847793"},"reference-count":17,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2021,7,12]],"date-time":"2021-07-12T00:00:00Z","timestamp":1626048000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Skin Research and Technology"],"published-print":{"date-parts":[[2021,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Although many hair disorders can be readily diagnosed based on their clinical appearance, their progression and response to treatment are often difficult to monitor, particularly in quantitative terms. We introduce an innovative technique utilizing a smartphone and computerized image analysis to expeditiously and automatically measure and compute hair density and diameter in patients in real time.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A smartphone equipped with a dermatoscope lens wirelessly transmits trichoscopy images to a computer for image processing. A black\u2010and\u2010white binary mask image representing hair and skin is produced, and the hairs are thinned into single\u2010pixel\u2010thick fiber skeletons. Further analysis based on these fibers allows morphometric characteristics such as hair shaft number and diameters to be computed rapidly. The hair\u2010bearing scalps of fifty participants were imaged to assess the precision of our automated smartphone\u2010based device in comparison with a specialized trichometry device for hair shaft density and diameter measurement. The precision and operation time of our technique relative to manual trichometry, which is commonly used by hair disorder specialists, is determined.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>An equivalence test, based on two 1\u2010sided t tests, demonstrates statistical equivalence in hair density and diameter values between this automated technique and manual trichometry within a 20% margin. On average, this technique actively required 24\u00a0seconds of the clinician's time whereas manual trichometry necessitated 9.2\u00a0minutes.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Automated smartphone\u2010based trichometry is a rapid, precise, and clinically feasible technique which can significantly facilitate the assessment and monitoring of hair loss. Its use could be easily integrated into clinical practice to improve standard trichoscopy.<\/jats:p><\/jats:sec>","DOI":"10.1111\/srt.13076","type":"journal-article","created":{"date-parts":[[2021,7,12]],"date-time":"2021-07-12T11:37:52Z","timestamp":1626089872000},"page":"1128-1134","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["A novel automated approach to rapid and precise in vivo measurement of hair morphometrics using a smartphone"],"prefix":"10.1111","volume":"27","author":[{"given":"Ali","family":"Majd","sequence":"first","affiliation":[{"name":"Department of Dermatology and Skin Science University of British Columbia Vancouver BC Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohammed","family":"AlJasser","sequence":"additional","affiliation":[{"name":"Department of Dermatology and Skin Science University of British Columbia Vancouver BC Canada"},{"name":"Division of Dermatology King Saud bin Abdulaziz University for Health Sciences Riyadh Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hengameh","family":"Mirzaalian","sequence":"additional","affiliation":[{"name":"Medical Image Analysis Lab School of Computing Science Simon Fraser University Burnaby BC Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jerry","family":"Shapiro","sequence":"additional","affiliation":[{"name":"Department of Dermatology and Skin Science University of British Columbia Vancouver BC Canada"},{"name":"Vancouver Coastal Health Research Institute Vancouver BC Canada"},{"name":"The Ronald O. Perelman Department of Dermatology NYU Grossman School of Medicine NY USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ghassan","family":"Hamarneh","sequence":"additional","affiliation":[{"name":"Medical Image Analysis Lab School of Computing Science Simon Fraser University Burnaby BC Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Harvey","family":"Lui","sequence":"additional","affiliation":[{"name":"Department of Dermatology and Skin Science University of British Columbia Vancouver BC Canada"},{"name":"Vancouver Coastal Health Research Institute Vancouver BC Canada"},{"name":"BC Cancer Vancouver BC Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leopoldo Duailibe Nogueira","family":"Santos","sequence":"additional","affiliation":[{"name":"Department of Dermatology and Skin Science University of British Columbia Vancouver BC Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"Chu","sequence":"additional","affiliation":[{"name":"Department of Dermatology Wayne State University School of Medicine Detroit Michigan USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tim K.","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Dermatology and Skin Science University of British Columbia Vancouver BC Canada"},{"name":"Vancouver Coastal Health Research Institute Vancouver BC Canada"},{"name":"BC Cancer Vancouver BC Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,7,12]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.4103\/0974-7753.58553"},{"key":"e_1_2_6_3_1","unstructured":"Folliscope \u327f 2.8 \u2013Photo Trichogram ver 1.1.1. \u2013 USER MANUAL"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1177\/1090820X12468314"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijwd.2018.05.001"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/1346-8138.13832"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.4103\/0974-7753.125603"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1111\/jdv.15663"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.5826\/dpc.0302a05"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.2340\/00015555-1906"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jaad.2011.04.023"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.5142\/jgr.2012.36.4.391"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.5021\/ad.2012.24.3.295"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.1109\/TIP.2014.2362054"},{"key":"e_1_2_6_15_1","article-title":"Vessel scale\u2010selection using MRF optimization","author":"Mirzaalian H","year":"2010","journal-title":"CVPR"},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1109\/34.161346"},{"key":"e_1_2_6_17_1","doi-asserted-by":"publisher","DOI":"10.1111\/bjd.13230"},{"key":"e_1_2_6_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.det.2013.11.005"}],"container-title":["Skin Research and Technology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/srt.13076","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/srt.13076","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/srt.13076","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,8,28]],"date-time":"2023-08-28T06:38:32Z","timestamp":1693204712000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/srt.13076"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,7,12]]},"references-count":17,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2021,11]]}},"alternative-id":["10.1111\/srt.13076"],"URL":"https:\/\/doi.org\/10.1111\/srt.13076","archive":["Portico"],"relation":{},"ISSN":["0909-752X","1600-0846"],"issn-type":[{"value":"0909-752X","type":"print"},{"value":"1600-0846","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,7,12]]},"assertion":[{"value":"2021-02-07","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-06-24","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-07-12","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}