ABSTRACT
It is of little doubt that noninvasive imaging in the late 20th century and now the early 21st century has been revolutionized by magnetic resonance imaging. In particular, imaging of the vascular tree has become possible with MRI technology, with continual refinements and improvements driving it into the future. Magnetic resonance angiography (MRA) has roots that date back to the early 1950s, where in the Department of Physics at the Indian Institute of Sciences, G. Suryan, utilizing a U-tube and coils of wire, discovered inflow effects. Singer in the late 1950s applied Suryan’s discovery of inflow effects in vivo, utilizing a mouse and a tourniquet. From these humble beginnings, MRI and MRA technology has progressed to its current level of sophistication, with both neurological and non-neurological applications (1,2).
