Dilated cardiomyopathy CT

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Abdelrahman Ibrahim Abushouk, MD[2]

Overview

Cardiac CT scanning with angiography (CTA) can be helpful in detecting the complication of heart failure, as well excluding ischemia as a cause of dilated cardiomyopathy (calcium coronary score and myocardial perfusion analysis).

CT scan

Cardiac CT scanning with angiography (CTA) can be useful to:

• Diagnose heart failure: by calculating the biventricular volume and ejection fraction with good correlation to echocardiography.
• Assessing the regional wall motion (with cine-loop formatting)
• Excluding ischemia as a cause for DCM (Cardiac CTA has a 98% diagnostic sensitivity and 97% specificity in excluding ischemic cardiomyopathy). Also, Myocardial perfusion analysis of the coronary arteries is also beneficial.

• Differential diagnosis of DCM from hypertrophic cardiomyopathy, arrhythmogenic right ventricular dysplasia, and left ventricular noncompaction.

Cardiac CT scan showing enlarged cardiac chambers, in particular dilated ventricles. Case Courtesy: James Heliman, MD