{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,17]],"date-time":"2026-02-17T03:04:43Z","timestamp":1771297483876,"version":"3.50.1"},"reference-count":34,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2021,12,29]],"date-time":"2021-12-29T00:00:00Z","timestamp":1640736000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the Bio &amp; Medical Technology Development Program of the National Research Foundation (NRF)","award":["2019M3E5D1A01069353"],"award-info":[{"award-number":["2019M3E5D1A01069353"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Erection measurements are the most important indicator of male urological disease diagnosis, treatment, and results. Rigiscan has been used widely in studies and diagnoses for nocturnal penile tumescence for evaluating erectile dysfunction by measuring the number and timing of erectile dysfunctions during sleep. However, this device has limitations such as the weight and bulk of the device and has been questioned for its role as a standard for ED Erectile Dysfunction (ED) diagnosis. In this study, we propose a real-time wearable monitoring system that can quantitatively measure the length and circumference of the penis using electronic textiles (E-textile) and carbon nanotube (CNT) sensors. The E-textile sensor is used to measure the length, circumference, and gradient with portability, convenience, and comfort. Sensors were created by coating CNTs on latex for flexibility. The CNT-based latex condom-type sensor in our proposed system shows the length, circumference, and curvature measurements with changes in resistance, and the E-textile performance shows a 1.44% error rate and a cavity radius of 110 to 300. The results of this conceptual study are for supplementary sensor development with a combination of new technologies with alternatives or existing methods for measuring erection function.<\/jats:p>","DOI":"10.3390\/s22010231","type":"journal-article","created":{"date-parts":[[2021,12,29]],"date-time":"2021-12-29T23:31:35Z","timestamp":1640820695000},"page":"231","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Wearable E-Textile and CNT Sensor Wireless Measurement System for Real-Time Penile Erection Monitoring"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9945-3613","authenticated-orcid":false,"given":"Yongki","family":"Heo","sequence":"first","affiliation":[{"name":"Department of Medical and Digital Engineering, Hanyang University, Seoul 04763, Korea"}]},{"given":"Jinhyung","family":"Kim","sequence":"additional","affiliation":[{"name":"Smart Sensor Research Center, Korea Electronics Technology Institute, Seongnam 13509, Korea"}]},{"given":"Cheolung","family":"Cha","sequence":"additional","affiliation":[{"name":"Smart Sensor Research Center, Korea Electronics Technology Institute, Seongnam 13509, Korea"}]},{"given":"Kyusik","family":"Shin","sequence":"additional","affiliation":[{"name":"Smart Sensor Research Center, Korea Electronics Technology Institute, Seongnam 13509, Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8956-3974","authenticated-orcid":false,"given":"Jihyoung","family":"Roh","sequence":"additional","affiliation":[{"name":"Department of Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), Daegu 41061, Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6080-7493","authenticated-orcid":false,"given":"Jungki","family":"Jo","sequence":"additional","affiliation":[{"name":"Department of Medical and Digital Engineering, Hanyang University, Seoul 04763, Korea"}]}],"member":"1968","published-online":{"date-parts":[[2021,12,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"10226","DOI":"10.1021\/acsami.9b00166","article-title":"Stretchable graphene pressure sensors with Shar-Pei-like hierarchical wrinkles for collision-aware surgical robotics","volume":"11","author":"Chang","year":"2019","journal-title":"ACS Appl. 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