Abstract
Left atrial (LA) fibrosis, estimated by late gadolinium enhancement (LGE) on cardiac magnetic resonance imaging (CMR), is a predictor of recurrent atrial fibrillation (AF) following catheter ablation. The two prevailing techniques for identification of LA LGE at present are 1) image intensity ratio (IIR) method, normalising intensity of the atrial wall by mean value of the atrial blood pool, and 2) standard deviation (SD) method analysing signal intensity distribution of the LA wall. However, there is a paucity of data comparing these techniques and no consensus exists as to the optimal quantification tool for LA LGE.
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