Djavidani, Behrus and Debl, Kurt and Lenhart, Markus and Seitz, Johannes and Paetzel, Christian and Schmid, Franz X. and Nitz, Wolfgang R. and Feuerbach, Stefan and Riegger, Guenter and Luchner, Andreas (2005) Planimetry of mitral valve stenosis by magnetic resonance imaging. JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY, 45 (12). pp. 2048-2053. ISSN 0735-1097,
Full text not available from this repository. (Request a copy)Abstract
OBJECTIVES We sought to determine whether noninvasive planimetry of the mitral valve area (MVA) by magnetic resonance imaging (MRI) is feasible and reliable in patients with mitral stenosis (MS). BACKGROUND Accurate assessment of MVA is particularly important for the management of patients with valvular stenosis. Current standard techniques for assessing the severity of MS include echocardiography (ECHO) and cardiac catheterization (CATH). METHODS In 22 patients with suspected or known MS, planimetry of MVA was performed with a 1.5-T magnetic resonance scanner using a breath-hold balanced gradient echo sequence (true FISP). Data were compared with echocardiographically determined MVA (ECHO-MVA, n = 22), as well as with invasively calculated MVA by the Gorlin-formula at (CATH-MVA, n = 17). RESULTS The correlation between MRI- and CATH-MVA was 0.89 (p < 0.0001), and the correlation between MRI- and ECHO-MVA was 0.81 (p < 0.0001). The MRI-MVA slightly overestimated CATH-MVA by 5.0% (1.60 +/- 0.45 cm(2) VS. 1.52 +/- 0.49 cm(2), p = NS) and ECHO-MVA by 8.1% (1.61 +/- 0.42 cm(2) VS. 1.48 +/- 0.42 cm(2), P < 0.05). On receiver-operating characteristic curve analysis, a value of MRI-MVA below 1.65 cm 2 indicated mitral stenosis (CATH-MVA <= 1.5 cm(2)), with a good sensitivity and specificity (89% and 75%, respectively). CONCLUSIONS Magnetic resonance planimetry of the mitral valve orifice in mitral stenosis offers a reliable and safe method for noninvasive quantification of mitral stenosis. In the clinical management of patients with mitral stenosis, it has to be considered that planimetry by MRI slightly overestimates MVA, as compared with MVA calculated echocardiographically and at catheterization. (c) 2005 by the American College of Cardiology Foundation.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PRESSURE HALF-TIME; DOPPLER ULTRASOUND; AORTIC-STENOSIS; AREA; ECHOCARDIOGRAPHY; QUANTIFICATION; |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Herz-, Thorax- und herznahe Gefäßchirurgie Medicine > Lehrstuhl für Innere Medizin II Medicine > Lehrstuhl für Röntgendiagnostik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 10 May 2021 08:03 |
| Last Modified: | 10 May 2021 08:03 |
| URI: | https://pred.uni-regensburg.de/id/eprint/35989 |
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