Hitachi, Ltd.

The University of Tokyo

Hitachi Aloka Medical, Ltd.

Keiichi Itatani

Takashi Okada

Minoru Ono

Yoshinori Seki

Tomohide Nishiyama

Hajime Sakashita

Kagami Miyaji

An ultrasonic diagnostic device wherein: a Doppler processing unit acquires Doppler information in a living body on the basis of an ultrasonic reception signal; a velocity vector calculating unit acquires the velocity vector distribution of a blood stream in the living body on the basis of the Doppler information in the living body; and, to form a flow line showing the flow of the blood stream on the basis of the velocity vector distribution, a flow line forming unit searches for a proper start point by inversely tracing the flow of the blood stream from an initial start point along the reverse direction of the velocity vector and then forms a flow line extended from the proper start point.

Ultrasonic diagnostic device

To provide a fluid flow rate detection device which can be evaluated as adequate from a medical point of view. The velocity of a fluid flowing through a luminal organ in vivo is to be obtained. V(r, &#x3b8;)=w&#xb7;V+(1&#x2212;w)&#xb7;Vis calculated to obtain a calculated value V(r, &#x3b8;) of the flow rate regarding a component of the fluid in the direction perpendicular to the ultrasonic beam direction. Here, the weight w is a value proportional to the distance d from the wall on one side of the organ at least when the distance is smaller than a predetermined distance from the wall on the one side, and the weight is a value proportional to the distance d' from the wall on the other side of the organ at least when the distance is smaller than a predetermined distance from the wall on the one other side.

Fluid flow rate detection device

Growing community of inventors

Kanagawa, Japan

Keiichi Itatani