Diagnostic imaging criteria for AC from the Modified Task Force Criteria from 2010

Global or regional dysfunction and structural alterations

Major
2D echocardiography criteria
PLAX RVOT ≥32 mm
PSAX RVOT ≥36 mm
RV fractional area change ≤33%
CMR criteria
Regional RV akinesia or dyskinesia or dyssynchronous RV contraction and 1 of the following
Ratio of RV end-diastolic volume to BSA ≥110 mL/m2 (men) or ≥100 mL/m2 (women)
RV ejection fraction ≤40%
RV angiography criteria
Regional RV akinesia, dyskinesia or aneurysm

Abbreviations:
AC, Arrhythmogenic cardiomyopathy
2D, two-dimensional
BSA, body surface area
CMR, cardiac magnetic resonance
PLAX, parasternal long axis
PSAX, parasternal short axis
RV, right ventricular
RVOT, right ventricular outflow tract