Fig. 4
A Myocardial blood flow (MBF) in the hypertrophic and non-hypertrophic segments in patients with HCM during vasodilator stress showing individual data from the initial study (baseline), and after surgical myectomy (n = 3 subjects, data points in red). End-systolic images in the apical 4-chamber view during vasodilator MCE from a single for the study prior to myectomy B and more than one year after myectomy C. End-systolic images shown were acquired immediately after microbubble destruction (T0) and at approximately two seconds (T2) after replenishment and illustrate improvement in contrast enhancement in the hypertrophied and remote segments