| 摘要 |
<p>The apparatus causes each one of an array of transducers (2) to emit an ultrasonic pulse signal sequentially into the object under examination, and receives each ultrasonic echo reflected by the internal structure of the object in each ultrasonic scanning cycle, in view of obtaining information concerning the internal structure of the object on the basis of input signals provided by the transducers. According to the present invention , there is provided a displacement measuring device (46) which determines displacement vectors indicating the displacements of the picture elements between two focused input pictures obtained in two ultrasonic scanning cycles for a plurality of focused input pictures. These vectors are then supplied to a displacement integrating device (48) which determines integrated displacement vectors indicating the displacements of the picture elements of a focused input picture from those of a predetermined reference focused input picture by integrating displacement vectors of the corresponding picture elements in a plurality of focused input pictures. The present invention is intended to provide an ultrasonic synthetic aperture diagnostic apparatus capable of operating at a high frame rate and of forming a clear picture of high quality even if the object is moving. <IMAGE></p> |
