Title :
Ultrasound stimulated vibro-acoustography
Author :
Greenleaf, James F. ; Fatemi, Mostafa
Author_Institution :
Dept. of Physiol. & Biophys., Mayo Clinic & Found., Rochester, MN, USA
Abstract :
An ultrasound method for imaging the acoustic response of a material to mechanical excitation is reported. Harmonic mechanical excitation is produced using ultrasound beams that intersect at the point of interest. The multiplicity of beams have different frequencies to produce cyclic radiation pressure at the interference region of the focus. The method is useful for imaging calcification in tissues, and variations in hardness of soft tissues
Keywords :
biological tissues; biomechanics; biomedical ultrasonics; acoustic response; calcification; cyclic radiation pressure; focus interference region; hardness; harmonic mechanical excitation; soft tissue; ultrasound beam; ultrasound imaging; ultrasound stimulated vibro-acoustography; Acoustic beams; Acoustic emission; Acoustic imaging; Biological tissues; Elasticity; Focusing; Frequency; Resonance; Stress; Ultrasonic imaging;
Conference_Titel :
Ultrasonics Symposium, 2001 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-7177-1
DOI :
10.1109/ULTSYM.2001.992031
