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The authors' reply: We thank Drs Artis and Gale for their careful review1 of our study on the dyssynchrony, scar and creatinine (DSC) index as a predictor of outcome after cardiac resynchronisation therapy (CRT).2 We shall deal with each point in turn.
We agree that atrial fibrillation often makes imaging more challenging, particularly when the ventricular response is uncontrolled. This applies to both cardiovascular magnetic resonance and echocardiography. In our experience, however, prospective gating permits adequate visualisation of the left ventricular endocardium as well as derivation of …