Staff

Staff Detail: Shinnosuke HIRATA

Profile

hirata_image
Name:
Shinnosuke HIRATA
Title:
Associate Professor 
Degree:
Ph.D. 
Keyword:
Ultrasonic measurement, Ultrasound in medicine, Tissue characterization, Numerical analysis of sound propagation 
E-Mail:
shin[at]chiba-u.jp 

Research Subject

Biomedical informatics based on ultrasonic measurement

In ultrasonic measurement, the target/region parameters of the position, structure, and physical quantity can be obtained from the wave information of the propagated ultrasound. We study to establish the biological and diagnostic information from the obtained parameters. In current research projects, evaluation of a disease stage of diffuse liver disease using ultrasound B-mode images and bone assessment of calcaneus using ultrasound propagated in the heel are studied.

Quantitative diagnosis of liver fibrosis in diffuse liver disease

Diffuse liver disease is a disease in which inflammation, necrosis, and regeneration of hepatocytes are repeated due to alcoholic hepatitis, viral hepatitis, and hepatic steatosis. This disease then causes liver cirrhosis and hepatocellular carcinoma. In this research project, we investigate a method for quantitative evaluation of liver fibrosis from the contrast of ultrasonic B-mode images or the response to external vibration.

Non-contact bone assessment using airborne ultrasound

In ultrasonic bone assessment, the bone quantity is estimated based on the speed of sound or frequency characteristic of attenuation in the cancellous bone. In the typical devices, the both sides of heel are firmly held by ultrasonic transducers. Therefore, the estimation may not be possible depending on the size and shape of the heel. In this research project, we investigate a non-contact method for bone assessment using airborne ultrasound passed through the heel.

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