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Figure 5 Two-Dimensional Computerized Tomography Image and Representative 12-Lead Electrocardiograms of Premature Ventricular Contractions or Ventricular Tachycardia Originating From the Aortic Root

L = left coronary cusp; LA = left atrium; N = noncoronary cusp; R = right coronary cusp; RA = right atrium; RV = right ventricle.