Ultrasonic focused pulse-echo method for determination of propagation velocity and layer thickness of multilayered media

Ultrasonic medical images is well established as an important diagnostic tool nowadays. Quantitative ultrasonic images, nevertheless, have not reached a clinical use. The cause of this are the peculiar propagation of ultrasonic waves in the biological tissues. This paper presents a: pulse-echo technique to estimate thickness and ultrasound wave velocity in multilayered media. Results of 8 experiments with an aluminum cylinder (thickness: 60 mm, diameter: 120 mm) phantom are presented and discussed.