Key result
Real-time CMR-guided ablation offers a valid alternative to conventional ablation for typical AFL despite technical limitations.
Why the study?
Performing electrophysiology procedures under real-time CMR guidance offers major imaging advantages without ionizing radiation, but poses technical, practical, and safety concerns that must be addressed before broad clinical application.
Does real-time cardiovascular magnetic resonance-guided radiofrequency ablation improve procedural outcomes compared to conventional fluoroscopy-guided ablation in patients with arrhythmias?
Does real-time cardiovascular magnetic resonance-guided radiofrequency ablation improve procedural outcomes compared to conventional fluoroscopy-guided ablation in patients with arrhythmias?
Real-time CMR-guided ablation is a promising radiation-free alternative to conventional fluoroscopy for simple arrhythmias, but requires further technical refinement for complex procedures.
May offer radiation-free ablation for typical atrial flutter in experienced centers; leaves open randomized confirmation and technical refinements for wider use.
Cardiac magnetic resonance (CMR) imaging could enable major advantages when guiding in real-time cardiac electrophysiology procedures offering high-resolution anatomy, arrhythmia substrate, and ablation lesion visualization in the absence of ionizing radiation. Over the last decade, technologies and platforms for performing electrophysiology procedures in a CMR environment have been developed. However, performing procedures outside the conventional fluoroscopic laboratory posed technical, practical and safety concerns. The development of magnetic resonance imaging compatible ablation systems, the recording of high-quality electrograms despite significant electromagnetic interference and reliable methods for catheter visualization and lesion assessment are the main limiting factors. The first human reports, in order to establish a procedural workflow, have rationally focused on the relatively simple typical atrial flutter ablation and have shown that CMR-guided cavotricuspid isthmus ablation represents a valid alternative to conventional ablation. Potential expansion to other more complex arrhythmias, especially ventricular tachycardia and atrial fibrillation, would be of essential impact, taking into consideration the widespread use of substrate-based strategies. Importantly, all limitations need to be solved before application of CMR-guided ablation in a broad clinical setting.
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Tampakis et al. (2023) conducted a review in Cardiac arrhythmias. Real-time cardiovascular magnetic resonance-guided radiofrequency ablation vs. Conventional ablation was evaluated. Real-time cardiovascular magnetic resonance-guided radiofrequency ablation represents a valid alternative to conventional ablation for typical atrial flutter, though technical limitations remain.
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