FIGURE 1. ¹²³I-MIBG images obtained from short-axis reconstruction in patient with IDC. The M/C ratio reflecting myocardial ¹²³I-MIBG uptake increased from 2.4 before treatment to 3.6 after treatment with ß-blocker (bisoprolol) for about 1 y. C = left ventricular cavity; M = myocardium.