Integration of Three‐Dimensional Left Atrial Magnetic Resonance Images into a Real‐Time Electroanatomic Mapping System: Validation of a Registration Method

Abstract

Our registration method, which is mainly based on the surface registration of the posterior wall of the left atrium, enables almost 90% of PVs to be isolated by means of an anatomically based catheter ablation approach.

MRI-Guided Ventricular Tachycardia Ablation

“…Registration accuracy was determined using the internal CARTO summation statistics, averaging the distance of the individual mapping points to the closest surface point of the registered MRI shell. 11 …”

Optimal Cardiac Magnetic Resonance Contrast-Enhanced Timing Robust Angiography (CMR-CENTRA) for the Three-Dimensional Reconstruction of the Bilateral Atria in the Electroanatomic Mapping (EAM) of Atrial Fibrillation

“…Recently, cardiac magnetic resonance (CMR) imaging with excellent resolution has provided accurate and detailed delineation of the complex cardiac anatomy (7)(8)(9). With technical advancements, a three-dimensional (3D) reconstruction of the heart from CMR image data may be possible according to the catheter-based electrophysiology studies that discuss electroanatomic mapping (EAM) (10,11). A 3D reconstruction model of the heart guides catheter movement as it approaches ablation targets and improves the outcomes of catheter ablations in patients with AF (10,11).…”

“…With technical advancements, a three-dimensional (3D) reconstruction of the heart from CMR image data may be possible according to the catheter-based electrophysiology studies that discuss electroanatomic mapping (EAM) (10,11). A 3D reconstruction model of the heart guides catheter movement as it approaches ablation targets and improves the outcomes of catheter ablations in patients with AF (10,11). Thus, the 3D reconstruction of the heart via an EAM system requires high-quality cardiac images with excellent spatial resolution and tissue contrast in order to ensure a successful catheter ablation (10,11).…”

“…A 3D reconstruction model of the heart guides catheter movement as it approaches ablation targets and improves the outcomes of catheter ablations in patients with AF (10,11). Thus, the 3D reconstruction of the heart via an EAM system requires high-quality cardiac images with excellent spatial resolution and tissue contrast in order to ensure a successful catheter ablation (10,11).…”

The Role of Three-dimensional Rotational Angiography in Atrial Fibrillation Ablation

“…Integration of 3D reconstructions of pre-procedurally acquired data sets derived from multislice computed tomography (MSCT) or magnetic resonance imaging (MRI) into EAM systems has been introduced to guide left atrial (LA) ablation procedures. [8][9][10][11][12][13] However, these remote imaging technologies may not perfectly reflect the status found during ablation due to changes in cardiac rhythm and preload, and their impact on the LA volume for example. Therefore, the search for an intra-procedural technology close to realtime imaging continued and led to the development of rotational angiography.…”