Method and apparatus for generating a color blood flow image based on the ultrasonic echo signal received by intravascular ultrasound imaging probe

摘要

PROBLEM TO BE SOLVED: To improve imaging by displaying both the components of kinetic frequency, which expresses the image of view in a designated color corresponding to an image point, and kinetic power, which expresses that image at a brightness level at a color image point, as image data. ;SOLUTION: A beam generator 50 multiplexes the information of static image scan (B scan: brightness) and dynamic image scan (F scan: stream) and a barrel shifter 52 adds weight by scan through a finite impulse response filter 54. Afterwards, B scan data are transformed to a video pixel coordinate by an image vector delay RAM 56. After a beam buffer 60, F scan data are formed into color power data and color frequency data at respective image points. Finally, both these data and the B scan data made into video pixels are selectively combined by an image and color output multiplexer and a composite image is formed.;COPYRIGHT: (C)1998,JPO