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 language | English |
---|---|
Pages (from-to) | 500-503 |
Number of pages | 4 |
Journal | Journal of Magnetic Resonance Imaging |
Volume | 27 |
Issue number | 3 |
DOIs | |
State | Published - Mar 2008 |
Keywords
- Abdominal aortic aneurysm
- Endoleak
- Endovascular repair
- MRA
- Stent-graft
- Time-resolved