Title :
Ultrasonic wave properties of human bone marrow in elderly people
Author :
Ueda, Ryohei ; Kawasaki, Satoshi ; Matsukawa, Mami ; Hasegawa, Akihiko ; Fujita, Akifumi ; Mihata, Teruhisa ; Neo, Masashi
Author_Institution :
Lab. of Ultrasonic Electron., Doshisha Univ., Kyoto, Japan
Abstract :
Ultrasonic wave properties of human bone marrow in elderly people were measured by a conventional ultrasound pulse technique. In the MHz range, temperature dependence of wave properties were experimentally studied. Both sound velocity and attenuation decreased with increasing temperature. The site dependence (femur and tibia) and individual difference were negligible. The slopes of the attenuation were estimated by a power law (α=α0fn). The values of the exponent n were in the range of 2.0 - 2.3. We also investigated two wave phenomenon in the cancellous bone filled with the human bone marrow. The slow wave velocity decreased with increasing temperature, reflecting the characteristics of bone marrow.
Keywords :
bioacoustics; biomedical ultrasonics; bone; geriatrics; ultrasonic attenuation; cancellous bone; conventional ultrasound pulse technique; elderly people; femur; human bone marrow; power law; slow wave velocity; sound attenuation; sound velocity; tibia; ultrasonic wave properties; Attenuation; Bones; Bovine; Senior citizens; Temperature distribution; Temperature measurement; Velocity measurement; Bone marrow; Cancellous bone; Femur; Tibia; Ultrasonic pulse technique;
Conference_Titel :
Ultrasonic Characterization of Bone (ESUCB), 2015 6th European Symposium on
Conference_Location :
Corfu
DOI :
10.1109/ESUCB.2015.7169911
