| 摘要 |
The present invention relates to an ultrasonic synthetic aperture diagnostic apparatus which detects information concerning an internal structure of an object to be examined by making each of a plurality of arranged transducers sequentially emits an ultrasonic pulse signal into the object in turn, receiving each ultrasonic echo reflected by the internal structure of the object by the plurality of transducers in each ultrasonic scanning cycle, and obtaining information concerning the internal structure of the object on the basis of input signals provided by the plurality of transducers. The present invention is intended to provide an ultrasonic synthetic aperture diagnostic apparatus capable operating at a high frame rate and of forming a clear picture of high quality even if the object is moving. The ultrasonic synthetic aperture diagnostic apparatus comprises a displacement measuring means 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, and a displacement integrating means 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.
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