Legend. Novel experimental applications of multidetector CT. In vivo delayed enhancement allows detection of transmural differentiation of viable and non-viable myocardium, which was as effective as magnetic resonance (upper panels). CT angiography also allows the measurement of differences in regional myocardial perfusion produced by LAD stenosis during adenosine stress (lower panels). Short- (left) and long- (right) axis views.See pages 147 and 147.