Guy Hugues Fontaine
Atrial fibrillation is the most common arrhythmia in human. It is a cause of mortality and morbidity leading to one of the most important expenditure in the modern world. Especially, it is increasing even further because of prolongation of life due to the advances of medicine. A group from Paris has attempted to demonstrate a link between fat in the epicardium of atrial tissue to the production of fibrosis as a possible mechanism of atrial fibrillation (AF). In their discussion and conclusion, the authors admit that the mechanism of AF is not completely understood. After an excellent review of the CMR techniques available for the identification of fat, fibrosis, and water in the heart, they note a lack of spatial resolution of modern imaging techniques that result in their performing ex vivo CMR on two hearts. However, the modern digital microscope has an optimal resolution which could enable a more precise interpretation of the pathophysiology of AF.
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