An ultrasonic measurement control unit of a processing unit of an ultrasonic imaging device forms an ultrasonic measurement unit, which performs ultrasonic measurement, together with an ultrasonic wave transmitting and receiving unit. A desired sensitivity attenuation position setting unit sets a desired sensitivity attenuation position in a generated ultrasonic image. An image generation unit generates an ultrasonic image by performing a beam forming process in which received signals of elements input from the ultrasonic measurement control unit are added. In the beam forming process, a beam forming processing unit performs attenuation control to attenuate the signal strength of a received ultrasonic signal corresponding to the desired sensitivity attenuation position.
