Time-resolved MR angiography for the classification of endoleaks after endovascular aneurysm repair

Emil I. Cohen, David B. Weinreb, Robert H. Siegelbaum, Sean Honig, Michael Marin, Joshua L. Weintraub, Robert A. Lookstein

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Purpose: To evaluate the utility of time-resolved MR angiography (TR-MRA), compared with digital subtraction angiography (DSA), in the classification of endoleaks in patients who have undergone endovascular aneurysm repair (EVAR). Materials and Methods: Thirty-one patients who had undergone EVAR to repair an abdominal aortic aneurysm were evaluated with both TR-MRA and DSA to determine endoleak etiology. The patient population consisted of 26 men and 5 women with a mean age of 78.5 years (range, 55-93 years). The mean time interval between TR-MRA and DSA was 1.5 weeks (range, 1-8 weeks). Endoleaks were classified as type II when enhancement of the external iliac vessels was observed before the appearance of the endoleak; otherwise the endoleak was classified as type I or III. The results of TR-MRA classification were compared with the reference gold standard, DSA. Results: Agreement between TR-MRA and DSA regarding endoleak classification occurred in 30 of 31 cases (97%). Discordant classification occurred in a case in which a Type II endoleak was misclassified as a Type III due to failure to visualize a lumbar vessel. Conclusion: TR-MRA is highly effective in classifying endoleaks following EVAR when compared with DSA.

Original languageEnglish
Pages (from-to)500-503
Number of pages4
JournalJournal of Magnetic Resonance Imaging
Volume27
Issue number3
DOIs
StatePublished - Mar 2008

Keywords

  • Abdominal aortic aneurysm
  • Endoleak
  • Endovascular repair
  • MRA
  • Stent-graft
  • Time-resolved

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