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Related Experiment Video

Updated: Jan 23, 2026

Non-fluoroscopic Catheter Tracking for Fluoroscopy Reduction in Interventional Electrophysiology
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Non-fluoroscopic catheter ablation: A randomized trial.

Leonardo Martins Pires1, Tiago Luiz Luz Leiria1, Marcelo Lapa Kruse1

  • 1Cardiology Institute of Rio Grande Do Sul, University Foundation of Cardiology, Porto Alegre, RS, Brazil.

Indian Pacing and Electrophysiology Journal
|June 26, 2019
PubMed
Summary

Electroanatomical mapping (EAM) allows for catheter ablation of tachyarrhythmias without fluoroscopy, offering similar success rates to traditional X-ray (RX) methods. While EAM increases procedure time, it significantly reduces radiation exposure for patients.

Keywords:
Electro-anatomical mappingElectroanatomic mappingFluoroscopyX-rays

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Area of Science:

  • Cardiology
  • Medical Imaging
  • Interventional Electrophysiology

Background:

  • Catheter ablation is a curative treatment for tachyarrhythmias.
  • Fluoroscopy, commonly used in ablation, poses radiation risks.
  • Electroanatomical mapping (EAM) provides 3D imaging without X-rays and can supplement fluoroscopy.

Purpose of the Study:

  • To evaluate the feasibility of catheter ablation using only EAM, eliminating fluoroscopy.
  • To compare procedure time and success rates between exclusive EAM and fluoroscopy-guided (RX) ablation.

Main Methods:

  • A randomized, unicentric, uni-blind study.
  • Patients with tachyarrhythmias were randomized into either the RX group or the EAM group.
  • Outcomes measured included procedure time, success rates, and fluoroscopy time.

Main Results:

  • Success rates were comparable: 91.7% in the RX group versus 81.8% in the EAM group (P=0.46).
  • The EAM group experienced significantly longer procedure times (median 79-47-125 min vs. 49-30-100 min; P=0.006).
  • Fluoroscopy time was eliminated in the EAM group (0 min vs. 11±9 min; P<0.001), with fewer radiofrequency applications in the RX group.

Conclusions:

  • EAM enables catheter ablation for arrhythmias with reduced radiation risk.
  • Performing ablation solely with EAM is feasible, achieving success rates similar to fluoroscopy.
  • The primary trade-off for radiation reduction is an increased procedure duration.