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- Title
4D time-resolved magnetic resonance angiography for noninvasive assessment of pulmonary arteriovenous malformations patency.
- Authors
Boussel, Loic; Cernicanu, Alexandru; Geerts, Liesbeth; Gamondes, Delphine; Khouatra, Chahera; Cottin, Vincent; Revel, Didier; Douek, Philippe
- Abstract
Purpose To assess the capability of four-dimensional (4D) time-resolved magnetic resonance angiography (MRA) to assess pulmonary arteriovenous malformations (PAVMs) patency by analyzing pulmonary arterial and venous enhancement kinetics. Materials and Methods Seven patients with eight documented patent PAVMs underwent a 4D-MRA with keyhole and viewsharing compression at 3T with the following parameters: spatial resolution 0.87 × 0.87 × 1.4 mm3; field of view 500 × 350 × 238 mm3; dynamic scan time (temporal resolution) 1.2 seconds; total acquisition time 18.1 seconds for six dynamic datasets (6 × 1.2 sec + reference scan: 10.9 sec). All images were reviewed by two experienced radiologists. Image quality was rated on a qualitative 5-point scale (1: not assessable to 5: excellent). Signal value was measured on cross-sectional planes for the afferent arteries and efferent veins of the PAVM, and for normal reference healthy arteries and veins. The difference in time to peak for each coupled artery/vein (dTTPav) was calculated and compared with a Mann-Whitney test between PAVMs and reference vessels. Results Mean image quality was 3.2 ± 0.9. dTTPav was significantly smaller in PAVMs (0.15 ± 0.76 sec) than in reference vessels (3.75 ± 1.62 sec), P < 0.001. Conclusion 4D-MRA is a promising tool for noninvasive assessment of PAVM patency. J. Magn. Reson. Imaging 2010;32:1110-1116. © 2010 Wiley-Liss, Inc.
- Publication
Journal of Magnetic Resonance Imaging, 2010, Vol 32, Issue 5, p1110
- ISSN
1053-1807
- Publication type
Article
- DOI
10.1002/jmri.22384