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Vol. 7, No. 1:

Muscle Thickness Measurement from Reflection Echo of the Boundary Surface

Saadia Binte Alam, University of Hyogo, Japan; International University of Business Agriculture and Technology, Bangladesh
Rashedur Rahman, International University of Business Agriculture and Technology, Bangladesh
Manabu Nii, University of Hyogo, Japan
Syoji KobashiUniversity of Hyogo, Japan
Yutaka Hata, Fellow, IEEE, University of Hyogo, Japan
Abstract:
The loss of muscle mass is considered to be a major determinant of strength loss among elderly population. A study of muscular thickness measurement method founded on re ection echo from the boundary surface of the targeted area using ultrasonic wave is presented. By exploring the traveling direction of ultrasonic wave at the boundary surface of fat-muscle or muscle-fat, phase difference of the generated re ection echo can be measured. In the present study, boundary surface is identified by utilizing the difference of the re ected echo at frontier surface. Two different methods of interface echo recognition are introduced. To measure the re ection echo, ultrasonic waves are irradiated to a biological phantom using ultrasonic single probe with center frequency of 5.0 MHz. In an experimental environment, the proposed methods were applied to a fat-muscle-fat 3-layer phantom and muscle thickness was measured. In the template based method, the mean absolute error of the thickness was 0.32 mm, whereas for continuous wavelet transform (CWT) based method was 0.06 mm. It was observed that the level of the measurement precision is better in the CWT based method.
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