Key result
3D wide-band dielectric imaging accurately visualizes pulmonary veins during cryoballoon ablation, overestimating fluoroscopy by ~1.1 mm.
Why the study?
A novel wide-band dielectric imaging system was recently introduced to guide catheter ablation, but its accuracy in visualizing pulmonary vein anatomy during cryoballoon-based AF ablation needed evaluation.
Does a 3D wide-band dielectric imaging system accurately visualize pulmonary vein anatomy compared to fluoroscopy in patients undergoing cryoballoon-based atrial fibrillation ablation?
Observational (n=65)
Does a 3D wide-band dielectric imaging system accurately visualize pulmonary vein anatomy compared to fluoroscopy in patients undergoing cryoballoon-based atrial fibrillation ablation?
The novel wide-band dielectric 3D-imaging system provides accurate visualization of pulmonary vein anatomy comparable to fluoroscopy during cryoballoon ablation.
Answers are grounded in this paper and cite their sources.
May support fluoroscopy reduction in cryoballoon ablation; leaves open randomized outcome trials for dielectric imaging.
PURPOSE: Recently, a novel cardiac imaging system based on a wide-band dielectric technology (KODEX-EPD) was introduced to guide catheter ablation. The aim of the study was to evaluate this 3D wide-band dielectric imaging system (WDIS) during cryoballoon (CB)-based atrial fibrillation (AF) ablation focusing on accuracy of pulmonary vein (PV)-anatomy. METHODS: In consecutive patients with symptomatic AF, CB-based ablation was performed in conjunction with the 3D WDIS. Selective PV-angiographies were performed, and 3D anatomy of the left atrium (LA) and PVs using the 3D WDIS was created. The ostial diameters of the ipsilateral right-sided and left-sided PVs and ostial diameters of the right-/left-sided upper/lower PVs demonstrated by selective angiographies were analyzed and compared to 3D WDIS-based PV visualization. RESULTS: In 65 patients (42/65 (65%) male, age 65 ± 9 years, 29/65 (45%) paroxysmal AF) a total of 260 PVs were identified. Median ostial PV-diameters for the ipsilateral left- and right-sided PVs were 38 [34; 43] and 37 [34; 40.3] mm when assessed fluoroscopically and 40 [35.7; 43] and 39 [35.0; 43] mm as demonstrated by 3D WDIS. There was no statistically significant difference between both methods regarding PV-diameter measurements. KODEX-EPD overestimated fluoroscopy measurements by 1.08 mm (95% limits of agreement of -1.93 mm and 4.1 mm). CONCLUSION: The novel wide-band dielectric 3D-imaging system is feasible to create high-resolution images of cardiac structures during CB ablation procedures and accurately visualizes PV-anatomy.
No takes yet. Share an insight, caveat, or question.
Rottner et al. (2021) conducted an observational in Symptomatic atrial fibrillation (n=65). 3D wide-band dielectric imaging system (KODEX-EPD) vs. Selective PV-angiographies (fluoroscopy) was evaluated on Accuracy of pulmonary vein anatomy (ostial diameters) (Mean difference 1.08 mm, 95% CI -1.93 to 4.1). The 3D wide-band dielectric imaging system accurately visualized pulmonary vein anatomy during cryoballoon ablation, overestimating fluoroscopy measurements by 1.08 mm (95% LOA -1.93 to 4.1 mm).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: