Transmission ultrasonographyReview of the results of the application of an advanced signal-processing technique, called time delay spectrometry, in obtaining soft tissue transmission images by transmission ultrasonography, both in vivo and in vitro. The presented results include amplitude ultrasound pictures and phase ultrasound pictures obtained by this technique. While amplitude ultrasonographs of tissue are closely analogous to X-ray pictures in that differential absorption is imaged, phase ultrasonographs represent an entirely new source of information based on differential time of propagation. Thus, a new source of information is made available for detailed analysis.
Document ID
19740039834
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Heyser, R. C.
Le Croissette, D. H. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena Calif., United States)