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Abstract #3888

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

1Radiology, Weill Cornell Medical College, New York, USA

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.