Fig. 5
From: Hyperpolarized 13C urea myocardial first-pass perfusion imaging using velocity-selective excitation
Dynamically enhanced cardiac perfusion imaging series covering bolus passage in LV blood pool and myocardium. (a) 13C urea conventional excitation. (b) 13C urea velocity-selective excitation. (c) 1H gadolinium based contrast agent. Image series were sequentially acquired in one animal under maintained stress conditioning. Myocardial bolus peak occurs between 4 and 6Â s after injection (see Fig. 6). Left anterior descending coronary artery (LAD) is indicated by red arrow. LV blood pool is visualized by the red contour