Reducing Gd Dose for Moving Table MRA Using Cine-PC to Map Bolus Transit

Grace Choi¹, Priscilla Winchester¹, Minh Chao¹, Yi Wang¹, Martin Raymond Prince¹

Concern for NSF has motivated use of lower Gd doses in moving table MRA. To improve bolus timing at all stations of a moving table MRA and allow smaller shorter boluses, we used cine-PC at 6 locations to map the rate of blood flow down the aorta, iliac and femoral arteries. Testing methodology in 15 subjects and a prospective MRA trial in 6 subjects demonstrates excellent bolus timing achieved at all stations even when sharing only 0.1mMol/kg total Gd dose.