Ultrasound diagnosis apparatus

摘要

In FIG. 2 (A), a reception beam (102) is formed using a weighting function (112). A position of a peak of the weighting function (112) is set at the position of the reception beam (102). A reception beam (104) is formed using a weighting function (114), and a position of a peak of the weighting function (114) is set at the position of the reception beam (104). A reception beam (106) is formed using a weighting function (116) and a position of a peak of the weighting function (116) is set at a position of the reception beam (106). In this manner, the positions of the peaks of the weighting functions (112, 114, 116) are shifted in the receive aperture, to follow movements of the reception beams (102, 104, 106) caused by electrical scanning.

主权项

1. An ultrasound diagnosis apparatus comprising:
an array transducer having a plurality of transducer elements comprising first and second subsets of transducer elements; a transmitter which outputs a transmission signal to the plurality of transducer elements; and an weighting circuit and a weight controller for controlling the weighting circuit which are configured to apply a reception weight on a reception signal obtained from the plurality of transducer elements in a receive aperture, based on a position of each transducer element in the receive aperture, wherein the weighting circuit and the weight controller are configured to shift a position of a peak of the reception weights in the receive aperture, to follow a movement of a reception beam along a direction of scanning in the receive aperture having a reception weight other than zero, the array transducer comprises a first area composed of the first subset of transducer elements at an end of the array transducer or at ends of the array transducer and a second area composed of the second subset of transducer elements, and the weighting circuit and the weight controller are configured to allow the position of the peak of the reception weights to follow the movement of the reception beam in a manner that differs between the first area and the second area.