MRI of Right Atrial Function after Catheter Ablation of Atrial Flutter

M Ozgun, Paulus Kirchhof, AC Bunck, W Heindel, L Eckardt, D Maintz

Research output: Contribution to journalArticle

2 Citations (Scopus)


Rationale and Objectives: Catheter ablation of the cavotricuspid isthmus (CTI) is an effective treatment of right atrial flutter. The objective of this study was to evaluate the changes in CTI length and right atrial (RA) function after radiofrequency ablation of isthmus-dependent atrial flutter (isthmus ablation). Materials and Methods: Magnetic resonance imaging was obtained in 14 patients (2 female, mean age 59 +/- 9) before and after isthmus ablation (mean delay 80 +/- 175 days) using steady-state free precession cine magnetic resonance imaging in right anterior oblique view orientation. Right atrial function (maximum/minimum right atrial volumes, stroke volume, ejection fraction) and maximum/minimum length of the CTI were measured. Results: After isthmus ablation, maximum IRA volume decreased by 13% (P=.02) and minimum RA volume by 22% (P=.01), whereas stroke volume and ejection fraction did not increase significantly (P=.4 and .2, respectively). After ablation, the maximum length of the CTI showed a significant decrease of 19% (P
Original languageEnglish
Pages (from-to)856-861
Number of pages6
JournalAcademic Radiology
Issue number7
Publication statusPublished - 1 Jul 2010


  • Cardiac MRI
  • isthmus
  • right atrium
  • atrial flutter


Dive into the research topics of 'MRI of Right Atrial Function after Catheter Ablation of Atrial Flutter'. Together they form a unique fingerprint.

Cite this