Flow-independent magnetic resonance projection angiography.
The performance of current, flow-based sequences for imaging vasculature using MR is severely restricted in regions with inherently slow flow. We address this problem with a flow-independent imaging method. Specifically, we generate projection images of blood in the limbs while suppressing signal from all other tissues (primarily skeletal muscle, bone marrow, and subcutaneous fat) using a flow-compensated, water-selective, short TI inversion recovery sequence with a long echo time. We experimentally evaluate the effectiveness of this sequence and present in vivo results clearly demonstrating the method's potential.
Wright
G A
GA
Magnetic Resonance Systems Research Laboratory, Stanford University, California 94305.
Nishimura
D G
DG
Macovski
A
A
D000273:Adipose Tissue; D001769:Blood; D001808:Blood Vessels / Q000033:anatomy & histology*; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008954:Models, Biological; D008961:Models, Structural; D009132:Muscles; D012212:Rheology