MR angiography vs CT angiography in the follow-up of nitinol stent grafts in endoluminally treated aortic aneurysms

Our objective was to evaluate the accuracy of contrast-enhanced 3D MR angiography (MRA) in the follow-up of patients with endoluminally treated aortic aneurysms and correlate these findings with uni- or biphasic CT angiography (CTA). Forty MR angiograms in 32 patients with implanted aortic nitinol s...

Full description

Saved in:
Bibliographic Details
Published in:European radiology 2002-10, Vol.12 (10), p.2443-2450
Main Authors: Cejna, Manfred, Loewe, Christian, Schoder, Maria, Dirisamer, Albert, Hölzenbein, Thomas, Kretschmer, Georg, Lammer, Johannes, Thurnher, Siegfried
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Alloys
Aortic Aneurysm - diagnosis
Aortic Aneurysm - diagnostic imaging
Aortic Aneurysm - surgery
Aortic aneurysms
Contrast Media
Embolization
Female
Humans
Iliac Aneurysm - diagnosis
Iliac Aneurysm - diagnostic imaging
Iliac Aneurysm - surgery
Magnetic Resonance Angiography
Male
Medical imaging
Middle Aged
Observer Variation
Polyesters
Prosthesis Failure
Scanners
Stainless steel
Stents
Subtraction Technique
Tomography, X-Ray Computed
Veins & arteries
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Our objective was to evaluate the accuracy of contrast-enhanced 3D MR angiography (MRA) in the follow-up of patients with endoluminally treated aortic aneurysms and correlate these findings with uni- or biphasic CT angiography (CTA). Forty MR angiograms in 32 patients with implanted aortic nitinol stent grafts were compared to CTA. Twenty-two MR examinations were correlated with arterial-phase CTA (uniphasic), and 18 MR examinations were correlated with biphasic CTA. Uniphasic CTA demonstrated three type-1/type-3 endoleaks and four reperfusion (type-2) endoleaks. In addition, MRA depicted two type-2 reperfusion endoleaks that were missed by CTA. Using biphasic CTA, two type-1/type-3 endoleaks and three reperfusion (type-2) endoleaks were detected; of those, delayed scanning detected three reperfusion (type-2) endoleaks missed during arterial-phase CTA. In addition to the findings by CTA, MRA depicted another type-2 reperfusion endoleak. Magnetic resonance angiography is at least as sensitive as uni- or biphasic CTA for detecting endoleaks and may consequently offer advantages in patients with contraindications to iodinated contrast agents.
ISSN:0938-7994
1432-1084
DOI:10.1007/s00330-002-1429-8