Toenail Plate Size Measurement Through the Water-bath Method Using an Ultrasound System

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  • ISHIKAWA Shizuka
    Graduate School of Health and Welfare Science, Okayama Prefectural University
  • SAITO Seiji
    Faculty of Computer Science and Systems Engineering, Okayama Prefectural University
  • KIDA Katsuhiro
    Faculty of Health Sciences, Okayama University
  • NAGAO Yoh
    Department of Dermatology, Okayama Red Cross Tamano Hospital
  • SASAKI Shinsuke
    Faculty of Health and Welfare Science, Okayama Prefectural University

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Other Title
  • 超音波診断装置を用いた水浸法による足趾爪甲寸法の計測方法
  • チョウオンパ シンダン ソウチ オ モチイタ スイシンホウ ニ ヨル ソクシソウコウ スンポウ ノ ケイソク ホウホウ

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Abstract

<p>Diagnosis and assessment of nail lesions require an understanding of normal anatomical structures and information on their size. However, accurate measurement of the toenail plate on the nail bed has not been reported. This study investigated the usefulness and validity of a method of drawing and measuring the toenail plate through the water-bath method using an ultrasound system. The ultrasound images of the gel and water-bath methods of participants without nail lesions were compared. The thickness of the toenail plate was measured over time in the water. In addition, the thickness, height, width, and nail height index of the toenail plate of participants in their 20s and 40＋ age groups were compared. The results showed that the water-bath method clearly depicted the toenail plate without artifacts. The thickness of the immersed toenail plate remained unchanged at 0 mm, and no significant difference was observed. Furthermore, significant differences were observed in the thickness, height, and nail height index of the toenail plate of participants in their 20s and 40＋ age groups. These results demonstrate that this method can clearly image the toenail structure, and measure and evaluate the toenail plate.</p>

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