Figure 1

Myocardial blood volume maps show feasibility of steady state MBV images with adenosine stress. Quantitative MBV (ml/100g tissue) maps in a canine with LCx stenosis: a1) Severe stenosis at rest causes vasodilation or MBV increase in the LCx bed or inferior myocardium (black arrow) compared to anteroseptal remote regions (white arrow) a2) At stress, inferior area experiences less MBV increase b1) Less severe stenosis shows less marked increase in inferior MBV at rest b2) At stress, inferior MBV increases less than MBV in remote area.