Apparatus and method for creating tissue doppler image using synthetic image

摘要

An apparatus and method capable of producing a tissue Doppler image without repeatedly transmitting ultrasound signals by the ensemble number to each scan line. An ultrasound beam is transmitted in a non-sequential manner and a plurality of receive beams received in response to each transmission of the transmit beam are grouped into an increment data group of a scan line index increasing direction and a decrement data group of a scan line index decreasing direction. Auto correlation is performed on the increment data group of the scan line index ascending order and decrement data group of the scan line index descending order, weights are applied to respective auto correlation values for the increment and decrement data group, and then the auto correlation values with the weight applied are summed to compute a mean phase. At least one of velocities, powers and variances in response to the mean phase is outputted to produce TDI.

主权项

1. A tissue Doppler image (TDI) producing device, comprising:
a transmission/reception controller configured to: set a plurality of scan lines, define sequential indices of the scan lines, set a transmission order of a transmit beam for the scan lines in a non-sequential manner in which a decrement of −1 of a scan line index and an increment of +3 of the scan line index are alternated between neighboring scan lines arranged according to the transmission order, control a transmit beam to be transmitted to a target object according to the transmission order, and group a plurality of receive beams received in response to each transmission of the transmit beam into an increment data group in which an increment of the scan line index is +2 and a decrement data group in which a decrement of the scan line index is −1; an image motion estimation/compensation controller configured to: perform an auto correlation on the increment data group and the decrement data group, respectively, to obtain auto correlation values, and apply weights computed based on a mean phase difference of the increment data group and a mean phase difference of the decrement data group to respective ones of the auto correlation values for the increment data group and the decrement data group, and sum the auto correlation values with the weight applied thereto to compute a mean phase; and an image producer configured to output at least one of velocities, powers and variances in response to the mean phase to produce a TDI.