Ultrasonic display apparatus having means for detecting the position of an ultrasonic probe

Claim 1

An ultrasonic diagnosis apparatus including an ultrasonic probe, wherein an ultrasonic tomogram and a planar symbolized pattern of a human body are simultaneously displayed on the screen of a monitor, said ultrasonic diagnosis apparatus comprising: means for detecting a predetermined number of positions of the ultrasonic probe in a two-dimensional plane relative to a reference point in the plane, and for generating signals identifying said position, said position-detecting means including auto-reset circuit means for generating a predetermined standard voltage identifying said reference point regardless of the position of said ultrasonic probe; first memory means for storing said symbolized pattern, said reference point and said predetermined positions with respect to said symbolized pattern, and said signals generated by said position detecting apparatus; second memory means for storing ultrasonic tomogram signals received by said ultrasonic probe relative to said predetermined positions; timing pulse generating apparatus for simultaneously reading out said stored information from said first and second memory means as to the detected positions of said probe; and means for simultaneously displaying on said screen the position of said probe relative to said symbolized pattern and the tomogram relative to the probe position reflecting said read-out information.