Dr. Naohiro Hozumi Profile

Dr. Naohiro Hozumi

at Toyohashi Univ of Technology

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Proceedings Article | 16 March 2020 Paper

Multi-layered phantoms mimicking skin pathologies for high-resolution ultrasound

Inna Seviaryna, Shizuka Nakada, Sachiko Yoshida, Naohiro Hozumi, Roman Gr. Maev

Proceedings Volume 11319, 1131917 (2020) https://doi.org/10.1117/12.2549833

KEYWORDS: Acoustics, Skin, Ultrasonography, Signal attenuation, Tissues, Polymers, Pathology, Melanoma

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Quickly developed medical market of high-resolution skin imaging requires suitable phantoms simulating characteristics of skin pathologies to develop new ultrasonic imaging systems and image processing algorithms. The phantom should mimic important acoustic properties of skin to provide a realistic and responsive environment. The most significant ultrasonic parameters here are sound speed, attenuation, and backscattering. The purpose of this study was to develop multilayered phantoms imitating mechanical and acoustic properties of healthy skin, benign nevus, and melanoma lesions that can be used for high-frequency ultrasound (50MHz). Phantoms were fabricated and tested using scanning acoustic microscopes (Honda 50-SI, Tessonics AM) and hand-held skin imager. Physical and acoustic properties of the phantom materials can be controlled by varying the material composition. Evaluated acoustic parameters were found to be close to values of human skin. The phantoms can be used for an extended period (6 months) without altering its properties.

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