Is cardiac MRI an effective test for arrhythmogenic right ventricular cardiomyopathy diagnosis?

Table 2 Revised task force criteria for imaging[5]

Major

By 2D echo:

Regional RV akinesia, dyskinesia or aneurysm and one of the following (end diastole):

1 Parasternal long axis view RVOT (PLAX) ≥ 32 mm (corrected for body size (PLAX/BSA) ≥ 19 mm/m2)

2 Parasternal short axis view RVOT (PSAX) ≥ 36 mm (corrected for body size (PSAX/BSA) ≥ 21 mm/m2)

3 Or fractional area change (FAC) ≤ 33%

By MRI:

Regional RV akinesia or dyskinesia or dyssynchronous RV contraction and one of the following:

1 Right ventricular end diastolic volume (RVEDV/BSA) ≥ 110 mL/m2 (male) or ≥ 100 mL/m2 (female)

2 Or RVEF ≤ 40%

By RV angiography:

Regional RV akinesia, dyskinesia or aneurysm

Minor

By 2D echo Regional RV akinesia or dyskinesia and one of the following (end diastole):

1 Parasternal long axis view RVOT (PLAX) ≥ 29 - < 32 mm (corrected for body size (PLAX/BSA) ≥ 16 - < 19 mm/m2)

2 Parasternal short axis view RVOT (PSAX) ≥ 32 - < 36 mm (corrected for body size(PSAX/BSA) ≥ 18 - < 21 mm/m2)

3 Or FAC > 33% - ≤ 40%

By MRI Regional RV akinesia or dyskinesia or dyssynchronous RV contraction and one of the following:

1 Right ventricular end diastolic volume/BSA ≥ 100 - < 110 mL/m2 (male) or ≥ 90 - < 100 mL/m2 (female)

2 RVEF > 40% - ≤ 45%

RVEF: Right ventricular ejection fraction; RVOT: Right ventricular outflow tract; FAC: Fractional area change.