| 摘要 |
<p>An ultrasonograph includes an ultrasonic probe consisting of a plurality of vibrator elements arranged in two-dimensional way for transmitting/receiving ultrasonic waves to/from an examinee, vibrator element selection means for selecting the vibrator elements used for transmission/reception, a signal processing unit for giving a delay time to the reception signal received from the selected vibrator element and processing the signal, an image processing unit for generating an image according to an output signal of the signal processing unit, and an image display unit for displaying the image. The ultrasonograph is characterized in that the image processing unit includes storage means for storing a first ultrasonic image obtained by scanning with a first vibrator arrangement selected by the vibrator element selection means and a second ultrasonic image obtained by scanning with a second vibrator arrangement selected by the vibrator element selection means so that irradiation is performed in a direction different from the beam direction of the first vibrator arrangement, and image calculation means for combining the first ultrasonic image and the second ultrasonic image. Thus, it is possible to collect a tomogram of high resolution by using two-dimensionally arranged ultrasonic probe and improve the tomogram quality by using the two-dimensionally arranged ultrasonic probe without increasing the entire size.</p> |
