Patent ID: 6620102
Filing Date: 2003-09-16
Classification: A61B,G01S

Abstract:
An ultrasonic diagnostic apparatus comprising a probe including an arrangement of elements for transmitting and receiving an ultrasonic pulse to and from an interior of a subject, delay means for delaying a wave signal received from each element of said probe, and a plurality of adder means connected in series to an output of said delay means for adding output signals in the preceding stage and forming an ultrasonic beam, said apparatus further comprising:correlation means for calculating the correlation of two or more output signals of any of said adder means; and delay correction means for calculating delay correction amount on the basis of the time difference between adjacent signals outputted from said correlation means so that the number of output signals from said correlation means is equal to the number of output signals from said delay means; wherein said delay correction means sets said delay correction amount in said delay means.