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Contrast enhancement of the inner ear in magnetic resonance images taken at 10 minutes or 4 hours after intravenous gadolinium injection.
- Source :
- Acta Oto-Laryngologica; Mar2012, Vol. 132 Issue 3, p241-246, 6p, 3 Black and White Photographs, 2 Charts, 1 Graph
- Publication Year :
- 2012
-
Abstract
- Conclusion. Contrast enhancement of the inner ear by three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging (3D-FLAIR MRI) taken 4 h after intravenous gadolinium (Gd) injection was better than when taken at 10 min. Using heavily T2-weighted 3D-FLAIR MRI, visualization of endolymphatic hydrops (EH) was possible in the vestibule and the cochlea after a standard intravenous dose of Gd. Objectives. To define a suitable time point for imaging Gd uptake in the inner ear acquired with heavily T2-weighted 3D-FLAIR MRI after standard intravenous Gd administration. Methods: Using a 3 Tesla MRI unit, heavily T2-weighted 3D-FLAIR MRI images were taken twice at approximately 10 min (conventional timing) and 4 h after intravenous gadodiamide (0.1 mmol/kg) injection in 10 patients with inner ear diseases including Ménière's disease. Results: The 4 h delay increased Gd enhancement of the 3D-FLAIR MRI images of the perilymphatic space in both symptomatic and asymptomatic ears. The increase in Gd enhancement was greater in symptomatic than in asymptomatic ears. Using this heavily T2-weighted 3D-FLAIR technique, EH was observed in both the cochlea and vestibule in images taken 4 h after the intravenous Gd injection. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00016489
- Volume :
- 132
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Acta Oto-Laryngologica
- Publication Type :
- Academic Journal
- Accession number :
- 71754976
- Full Text :
- https://doi.org/10.3109/00016489.2011.639085