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Cardiac resynchronization therapy guided by cardiovascular magnetic resonance Leyva FJ Cardiovasc Magn Reson 2010[Nov]; 12 (1): 64Cardiac resynchronization therapy (CRT) is an established treatment for patients with symptomatic heart failure, severely impaired left ventricular (LV) systolic dysfunction and a wide (> 120 ms) complex. As with any other treatment, the response to CRT is variable. The degree of pre-implant mechanical dyssynchrony, scar burden and scar localization to the vicinity of the LV pacing stimulus are known to influence response and outcome. In addition to its recognized role in the assessment of LV structure and function as well as myocardial scar, cardiovascular magnetic resonance (CMR) can be used to quantify global and regional LV dyssynchrony. This review focuses on the role of CMR in the assessment of patients undergoing CRT, with emphasis on risk stratification and LV lead deployment.|*Cardiac Resynchronization Therapy[MESH]|*Magnetic Resonance Imaging[MESH]|Heart Failure/pathology/physiopathology/*therapy[MESH]|Heart Ventricles/pathology/physiopathology[MESH]|Humans[MESH]|Myocardial Contraction[MESH]|Predictive Value of Tests[MESH]|Treatment Outcome[MESH]|Ventricular Dysfunction, Left/pathology/physiopathology/*therapy[MESH]|Ventricular Function, Left[MESH] |
