Ultrasound shear wave imaging for bone.
Recently, a computer-controlled scanning ultrasound (US) imaging system was developed in our laboratory. It includes a pair of broadband 48-MHz focusing copolymer transducers. The apertures of the transducers and their f-numbers were identically equal to 2 mm and 2.25, respectively. A specimen can be moved in a 10-microm increment in its plane and its normal direction can be rotated along the US propagation direction. It can be used to produce transmission-mode images of shear waves, as well as longitudinal waves for solid specimens. Shear waves in solids were generated by mode conversion. The results of the longitudinal and shear-wave US images for a piece of compact bovine bone obtained using this system are presented. Shear-wave images combined with longitudinal images can provide a more complete mechanical characterization of bone.
Ye
S
S
Institute of Acoustics and State Key Laboratory of Modern Acoustics, Nanjing University, 210093, Nanjing, China.
Wu
J
J
Peach
J
J
D000818:Animals; D001696:Biomechanical Phenomena; D002417:Cattle; D005269:Femur / Q000000981:diagnostic imaging* / Q000502:physiology; D007091:Image Processing, Computer-Assisted; D066298:In Vitro Techniques; D014463:Ultrasonography / Q000379:methods*