FIELD: medicine.
SUBSTANCE: group of inventions refers to medical equipment, namely to ultrasonic diagnostic imaging systems. Ultrasonic diagnostic imaging system for shear wave analysis comprising an ultrasonic array probe containing two dimensional array of transducer elements, which transmits a push pulse along a predetermined vector to generate a shear wave, transmits tracking pulses along tracking lines adjacent to the push pulse vector, and receives echo signals from points along the tracking lines, wherein the focused push pulse has measures of height, and of the azimuth, memory for storing the tracking line echo data, motion detector responsive to the tracking line data for detecting a shear wave passing through the tracking line locations, and a display for displaying a characteristic of a detected shear wave, wherein the ultrasound array probe is further operable to transmit along background motion tracking lines, along which background motion echo signals are received, in the vicinity of the push pulse vector at different times, which are compared to sense background motion in the vicinity of a shear wave. Method for adjusting the measurement of a shear wave characteristic measured in a region of tissue, for the effect of relative motion between the tissue and an ultrasound probe, comprises the steps wherein the ultrasonic probe is used to detect a shear wave in the region of tissue, transmitting background motion echo signals along background motion tracking lines beyond the depth of the push pulse, comparing the echo signals acquired at different times to adjust measured shear wave characteristics, that is corrected due to the relative motion.
EFFECT: using the inventions allows to reduce measurement errors associated with sensor relative displacement.
14 cl, 9 dwg
