In: PLOS ONE
9(3), e91078
[PDF, 945kB]
Abstract
Purpose: The aim of this study was to assess the diagnostic performance of ECG-gated non-contrast-enhanced quiescent interval single-shot (QISS) magnetic resonance angiography at a magnetic field strength of 3 Tesla in patients with advanced peripheral arterial occlusive disease (PAOD). Method and Materials: A total of 21 consecutive patients with advanced PAOD (Fontaine stage IIb and higher) referred for peripheral magnetic resonance angiography (MRA) were included. Imaging was performed on a 3 T whole body MR. Image quality and stenosis diameter were evaluated in comparison to contrast-enhanced continuous table and TWIST MRA (CE-MRA) as standard of reference. QISS images were acquired with a thickness of 1.5 mm each (high-resolution QISS, HR-QISS). Two blinded readers rated the image quality and the degree of stenosis for both HR-QISS and CE-MRA in 26 predefined arterial vessel segments on 5-point Likert scales. Results: With CE-MRA as the reference standard, HR-QISS showed high sensitivity (94.1%),specificity (97.8%),positive (95.1%),and negative predictive value (97.2%) for the detection of significant (>= 50%) stenosis. Interreader agreement for stenosis assessment of both HR-QISS and CE-MRA was excellent (kappa-values of 0.951 and 0.962, respectively). As compared to CR-MRA, image quality of HR-QISS was significantly lower for the distal aorta, the femoral and iliac arteries (each with p<0.01),while no significant difference was found in the popliteal (p = 0.09) and lower leg arteries (p = 0.78). Conclusion: Non-enhanced ECG-gated HR-QISS performs very well in subjects with severe PAOD and is a good alternative for patients with a high risk of nephrogenic systemic fibrosis.
Dokumententyp: | Zeitschriftenartikel |
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Fakultät: | Medizin |
Themengebiete: | 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin und Gesundheit |
URN: | urn:nbn:de:bvb:19-epub-33712-4 |
ISSN: | 1932-6203 |
Sprache: | Englisch |
Dokumenten ID: | 33712 |
Datum der Veröffentlichung auf Open Access LMU: | 15. Feb. 2017, 14:45 |
Letzte Änderungen: | 04. Nov. 2020, 13:11 |