Patent ID: 9267828
Filing Date: 2016-02-23
CPC Classification: A61B,G01F,G01S

Claim Text:
1. A fluid flow rate detection device comprising: an ultrasonic probe which repeats operations to transmit/receive ultrasonic beams at a plurality of angular direction positions to/from a fluid flowing through a luminal organ in vivo, and to output an echo data array with respect to each ultrasonic beam; a first calculation portion which calculates the flow rate regarding the ultrasonic beam direction component of the fluid, on the basis of the echo data array; a detection portion which obtains B mode images of the luminal organ at a plurality of time points on the basis of the repeatedly obtained echo data arrays, and on the basis of the B mode images at the plurality of time points, detects motion velocities of the wall on one side and the wall on the other side of the luminal organ at a plurality of angular directions; and a second calculation portion which obtains a first integral result V obtains a second integral result V calculates V wherein the weight w is proportional to a distance d from the wall on the one side, at least until a predetermined distance from the wall on the one side, and is proportional to a distance d′ from the wall on the other side until a predetermined distance from the wall on the other side.