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Yamaguchi Lab
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A medical ultrasound lab that measures the properties of tissue using ultrasound.
AboutAbout the lab
Reading what is inside tissue with ultrasound
The Yamaguchi Lab studies acoustic measurement and technologies for diagnostic and therapeutic support, with quantitative ultrasound diagnosis and tissue characterization as its main fields.
Its motto is "to understand the essential relationship between the physical and chemical phenomena being measured and wave phenomena."
Using ultrasound from 1 MHz to several hundred MHz, the lab measures the acoustic properties (speed of sound, attenuation, etc.) of various biological tissues and investigates how they relate to tissue composition and structure.
Together with multiple institutions and companies, the lab carries out education and research that combine measurement with imaging applications.
Key terms
- Acoustic impedance
- A quantity that expresses how difficult it is for sound to pass through a material. It is determined by the product of the material's density and the speed of sound in it.
- Echo
- Ultrasound that is reflected inside the body and returns. The condition of the inside of the body is read from its intensity and shape.
- Tissue characterization
- The structure and condition of tissue. It refers not only to shape but also to properties such as fibrosis and inflammation.
NewsLab news
View More ↗ResearchResearch themes
Centered on quantitative ultrasound diagnosis and tissue characterization, the lab develops acoustic measurement technologies and technologies for diagnostic and therapeutic support. Using ultrasound from 1 MHz to several hundred MHz, it investigates the relationship between the acoustic features of various biological tissues and their composition and structure.
*Illustrative imageMeasuring acoustic properties with ultra-high-frequency ultrasound
Using ultrasound from 1 MHz to several hundred MHz, the lab measures the acoustic properties (speed of sound, attenuation, acoustic impedance) of various biological tissues. It clarifies how the composition and structure of tissue relate to its acoustic features.
*Illustrative imageDeveloping tissue characterization methods
The lab analyzes echo signals from each organ obtained with ultrasound diagnostic equipment and other devices. It aims to make it possible to detect features of diseased tissue, determine how far a lesion has progressed, and estimate cancer metastasis.
*Illustrative imageMedical image processing for treatment support
The lab develops ways of presenting and visualizing images and information that reduce the burden on physicians and allow safer treatment in internal medicine and surgery. One example overlays a three-dimensional ultrasound image on a laparoscopic image so that the surface and a cross-section of the liver can be seen together during surgery.
MembersFaculty
The lab's members consist of faculty; doctoral, master's, and undergraduate students; and Special Research Professors, Special Research Associate Professors, and Special Researchers.
- ProfessorTadashi Yamaguchi
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Doppler Ultrasound and Vascular Sonography Examination in Navi Mumbai, Maharashtra, India” Goleisureintl / CC BY 4.0 (cropped)
- Measuring acoustic properties with ultra-high-frequency ultrasound: “UltrasoundProbe2006a” The original uploader was Drickey at English Wikipedia. / CC BY-SA 2.5 (cropped)
- Developing tissue characterization methods: “Abdominal Ultrasound Imaging in Navi Mumbai” Goleisureintl / CC BY 4.0 (cropped)
- Medical image processing for treatment support: “3D Computed Tomography (CT) Reconstruction of the Human Pelvis and Hip – Orthopedic View” Goleisureintl / CC BY 4.0 (cropped)
- Related lab (Yoshida Lab): “A modern medical ultrasound scanner” Harrison Keely / CC BY 4.0 (cropped)
- Related lab (Biomedical Imaging Lab (Suga Lab)): “An MRI scanner” Walter Davies / CC BY-SA 4.0 (cropped)
- Related lab (Hirata Lab): “Pelvic Ultrasound Examination Navi Mumbai India” Goleisureintl / CC BY 4.0 (cropped)
- Related lab (Micro-CT and Medical Imaging Engineering Lab): “X-ray Computed Tomography of Astromaterials -- jsc2024e076997” NASA Johnson Space Center / ROBERT MARKOWITZ NASA-JSC / Public domain (cropped)
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