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Dr Khurram and his colleagues from Johns Hopkins University in Baltimore, USA studied the relation between left atrial LGE and AF recurrence after ablation using QMass MR.

They concluded from a study including 165 participants, that those with a LGE (late gadolinium enhancement) <= 35% have a favorable outcome after catheter ablation, and those with LGE >= 35% have a higher rate of AF recurrence in the first year after the ablation.

For further reading:http://imaging.onlinejacc.org