Contrast-enhanced MR angiography. Methods, limitations and possibilities.
Whereas conventional MRA relies on enhanced blood signal from flow-induced magnitude and/or phase effects, gadolinium-enhanced MRA relies mainly on the enhanced blood signal caused by the reduced relaxation time T1. This has a large impact on the imaging technique used, as well as on the imaging volume orientation and the total scanning time. In general, gadolinium-enhanced MRA is faster, with fewer artifacts than MRA without contrast agents.
Kouwenhoven
M
M
Philips Medical Systems, MR Clinical Science, Best, The Netherlands. mKouwenh@best.ms.philips.com
D016477:Artifacts; D001769:Blood; D003287:Contrast Media / Q000008:administration & dosage; D005682:Gadolinium / Q000008:administration & dosage; D006801:Humans; D018810:Magnetic Resonance Angiography / Q000379:methods* / Q000706:statistics & numerical data; D013382:Subtraction Technique
D003287:Contrast Media; D005682:Gadolinium