Multimodality fusion imaging using delayed enhanced cardiac magnetic resonance imaging, computed tomography, positron emission tomography, and real time intracardiac echocardiography to guide ventricular tachycardia ablation in implantable cardioverter defibrillator patients.
3 l w L t v z m m a d w D d l t ntroduction ntegration of preprocedural 3 dimensional (3D) positron mission tomography (PET)/computed tomography (CT) nd magnetic resonance (MR) images with electroanatomic apping systems could offer significant advantages for venricular tachycardia (VT) ablations over endocardial maping alone. By providing more accurate anatomic and metbolic details for both left ventricular (LV) and myocardial car, it may facilitate anatomically based substrate guided T ablations. Contrast enhanced (CE) CT is able to proide anatomic information of the LV with submillimeter esolution. Fluorodeoxyglucose (FDG) PET can provide etabolic evaluation of the myocardial scar, its border zone, nd hibernating areas. Delayed enhanced cardiac magnetic esonance imaging (DE MRI) enables characterization of he transmural extent and 3D morphology of the anatomic car. Real time intracardiac echocardiography (ICE) can erve as intraprocedural substrate confirmation and catheter ip/myocardium contact assessment strategy.
Heart rhythm