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European Radiology
Published in: European Radiology 11/2006

01-11-2006 | Cardiac

MR evaluation of pulmonary vein diameter reduction after radiofrequency catheter ablation of atrial fibrillation

Authors: Frédéric Anselme, Gérald Gahide, Arnaud Savouré, Edouard Gerbaud, Mikael Mabru, Alain Cribier, Jean-Nicolas Dacher

Published in: European Radiology | Issue 11/2006

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Abstract

Fifty consecutive patients aged 52±12 years suffering from drug refractory atrial fibrillation (AF) underwent baseline and post-ablation MR angiography (MRA) at a mean follow-up of 4±3.5 months. Pulmonary vein (PV) disconnection was performed with a maximum energy delivery of 30 W. MRA allowed a two-plane measurement of each PV ostium. After ablation, no significant stenosis was observed, and only 1/194 (0.5%) and 3/194 (2%) PVs had a diameter reduction of 31–40% in the coronal and axial planes, respectively. There was a significant overall post-procedural PV narrowing of 4.9% in the coronal plane and 6.5% in the axial plane (P=ns between both planes). MRA is an efficient technique that can be used in pre- and postoperative evaluation of AF patients. Using a maximal power delivery limited to 30 W, no significant PV stenosis was observed at mid-term follow-up. Late PV anatomical assessment is needed to confirm these results on long-term follow-up.
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Metadata
Title
MR evaluation of pulmonary vein diameter reduction after radiofrequency catheter ablation of atrial fibrillation
Authors
Frédéric Anselme
Gérald Gahide
Arnaud Savouré
Edouard Gerbaud
Mikael Mabru
Alain Cribier
Jean-Nicolas Dacher
Publication date
01-11-2006
Publisher
Springer-Verlag
Published in
European Radiology / Issue 11/2006
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-006-0252-z

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