ULTRASOUND DIAGNOSTIC DEVICE, METHOD FOR GENERATING ACOUSTIC RAY SIGNAL OF ULTRASOUND DIAGNOSTIC DEVICE, AND PROGRAM FOR GENERATING ACOUSTIC RAY SIGNAL OF ULTRASOUND DIAGNOSTIC DEVICE
An ultrasound beam is transmitted to an inspection target by determining an opening of a positive phase and an opening of a negative phase corresponding to the opening of the positive phase in advance and inverting the phases with a group of a predetermined number of elements of a probe as each opening, and an ultrasound echo signal generated by interaction between the ultrasound beam and the inspection target is received through the plural elements of the probe. Then, two or more pieces of element data including receiving time information in each element, which are generated by receiving ultrasound echo signals generated for at least two or more overlapping target regions, are stored, and an acoustic ray signal in one scanning line is generated by overlapping the stored element data based on the receiving time information in each element.