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Cardiac magnetic resonance imaging (MRI). (A) Cardiac MRI late gadolinium imaging demonstrating circumferential enhancement of the pericardium, consistent with constriction. (B) Postcontrast T1-weighted black blood image demonstrating thickening of pericardium >6 mm. (C) Follow-up postoperative cardiac MRI with late gadolinium imaging showing decreased enhancement in the pericardium, demonstrating resolution of the constricted pericardium.
