An ultrasonic diagnostic apparatus according to the present invention sends out an ultrasonic wave toward a subject and receives the ultrasonic wave reflected from the subject, thereby generating the subjects tomographic image. The apparatus includes: a receiving section 214 for generating a number of received signals, which belong to the same acoustic line but which have mutually different reception sensitivities, based on a detection signal that has been obtained by detecting the ultrasonic reflected wave that has returned from the subject a synthesis processing section 206 for classifying segments on the acoustic line according to the intensity of the ultrasonic reflected wave, thereby making a synthetic received signal out of the received signals based on a result of the classification and an image generating section 207 for generating the subjects tomographic image by using either grayscales or color tones based on the signal intensity of the synthetic received signal.
