[Detection of pulsated blood flow by cine mode 3D angiography]

The phase contrast(PC) has an advantage to get an information about flow speed of blood along the gradient axis. The cine mode 3D-PC MRA was performed by a 1.5T clinical MR system(GE; Signa) using multi-slices gradient echo sequence with ECG gating and velocity-encoding gradient along three orthogonal axes. The cine mode 3D-PC data in three axes was constructed from 10 cardiac phases, respectively. The black and white cine mode 3D-PC MRA enabled to get an information of blood flow speed. The color MRA, in which flow direction was assigned with RGB colors, enabled to observe flow orientation of blood. Furthermore, the flow speed vector in each pixel showed a detail flow information in the intravascular space.