Blood flow measuring apparatus

Claim 1

An improved ultrasound blood flow measuring apparatus which includes a first means for measuring in real time a two-dimensional blood sream flow velocity distribution in a region in a living body by transmission and reception of ultrasonic waves along a plurality of scanning lines and providing data representative thereof, and a second means for measuring a one-dimensional blood stream flow velocity distribution of a linear region along a predetermined line from among said scanning lines in said living body region by transmission and reception of ultrasonic waves ad providing data representative thereof; the improvement comprising: means for simultaneously displaying on a single display screen said one-dimensional and said two-dimensional blood stream data, cursor means for displaying said predetermined line superposed on said living body region data, wherein said second means includes a processor means and a memory means, said processor means for writing blood stream flow velocity information derived from the reception of ultrasonic waves into a picture memory as said one-dimensional flow representative data, and said second means being adapted to measure said one-dimensional blood stream flow velocity distribution along said predetermined line for a first number of times per scan, said first means being adapted to measure said two-dimensional blood stream velocity distribution for a second number of times per scan line of said distribution, per scan, said first number being larger than said second number.