Integration of positron emission tomography/computed tomography with electroanatomical mapping: A novel approach for ablation of scar-related ventricular tachycardia

Integration of Merged Delayed‐Enhanced Magnetic Resonance Imaging and Multidetector Computed Tomography for the Guidance of Ventricular Tachycardia Ablation: A Pilot Study

“…Previous studies have reported an integration of scar imaging data in clinical mapping systems. The authors used either PET/CT 20,21 or DEMRI 9,11,12,22 to display 3D scar maps during VT ablation procedures. Because the spatial resolution of both PET and routine breath‐hold DEMRI sequences are limited, we chose to use a free‐breathing method to assess DE at high‐spatial resolution 16 .…”

Infarct architecture and characteristics on delayed enhanced magnetic resonance imaging and electroanatomic mapping in patients with postinfarction ventricular arrhythmia

“…A similar approach was used by Dickfeld, et al and Fahmy et al(17,18) using computed tomography and positron emission tomography data. However, the definition of scar by MRI is more accurate (20), includes the degree of transmurality, and allows tissue characterization within the scar.…”

“…Because of the limited density of endocardial measurements during EA mapping, as illustrated in Figure 3a, the point-based analysis with the reported ROC curves may yield a more accurate cut-off value between normal and scar tissue compared to a comparison of scar areas as suggested by others. (18)…”

Radiofrequency Catheter Ablation for Ventricular Tachycardia

“…Preoperative imaging of ventricular scarring with echocardiography, magnetic resonance imaging (MRI) [25], computed tomography (CT) and positron emission tomography (PET) [26] is important in procedural planning, including the exclusion of intracardiac thrombi, and in defining likely regional ablation targets. Modern mapping systems allow integration of this preprocedural imaging into a virtual online geometry of the patient's ventricles, thereby facilitating accurate localisation of sites critical to VT perpetuation [27].…”