Table 4. CT findings in cardiomyopathies.

Cardiomyopathies	CT findings
Ischemic cardiomyopathy	Focal wall motion abnormalities in coronary distribution
	Subendocardial or transmural DIE in coronary distribution
	Decreased enhancement on myocardial perfusion
	Assessment of coronary arteries
Dilated non-ischemic cardiomyopathy	Global systolic dysfunction
	Dilated ventricle
	Linear mid-myocardial DIE
	Absence of significant coronary disease
Hypertrophic cardiomyopathy	Asymmetric hypertrophy of basal interventricular septum (classic form)
	Systolic anterior motion of mitral valve
	Patchy or diffuse DIE
Myocarditis	Global/regional hypokinesis
	Myocardial/sub-epicardial DIE
Sarcoidosis	Global/regional hypokinesis
	Focal wall thickening (acute) or thinning (chronic)
	Myocardial/sub-epicardial DIE
Amyloidosis	Ventricular thickening with biatrial enlargement
	Diffuse sub-endocardial or transmural DIE
	Expansion of ECV
Left ventricular non-compaction	Ratio of trabeculated to non-trabeculated myocardium of >2.3 in end-diastole
Stress-induced cardiomyopathy (Takotsubo)	Hyperkinesis of the basal segments with hypokinesis/akinesia of the apical segments
	Absence of DIE
Arrhythmogenic right ventricular cardiomyopathy	Presence of fat within RV
	Major focal RV wall motion abnormalities with either RV dilation or systolic dysfunction

CT, computed tomography; DIE, delayed iodine enhancement; ECV, extracellular volume; RV, right ventricle.