Patent ID: 9492139
Filing Date: 2016-11-15
CPC Classification: A61B

Claim Text:
1. A method employing low frequency ultrasonics for medical diagnosis, the method comprising: projecting planar r.f. gated low frequency ultrasonic signal into a test object using one or more transmitting transducers, each transmitting transducer comprising an aperture, each transmitting transducer aperture having a width about 2 to about 100 times the acoustical wavelength of each low frequency ultrasonic signal, wherein the low frequency is a frequency from about 20 kHz to about 1 MHz, wherein each of the projected low frequency ultrasonic signals in the test object is affected and modified by internal features of the test object thereby generating one or more reflected, refracted, scattered or transmitted low frequency ultrasonic signals; receiving the received ultrasonic signals using large dynamic range instruments having a signal to noise ratio of at least 60 dB; processing the received ultrasonic signals to extract changes in the received ultrasonic signals compared to the projected low frequency ultrasonic signals; and correlating the processed signals, using a processor, to medically significant features of the test object for medical diagnosis.