Djavidani, Behrus and Debl, K. and Buchner, S. and Lipke, C. and Nitz, W. and Feuerbach, S. and Riegger, G. and Luchner, A. (2006) MRI planimetry for diagnosis and follow-up of valve area in mitral stenosis treated with valvuloplasty. ROFO-FORTSCHRITTE AUF DEM GEBIET DER RONTGENSTRAHLEN UND DER BILDGEBENDEN VERFAHREN, 178 (8). pp. 781-786. ISSN 1438-9029,
Full text not available from this repository. (Request a copy)Abstract
Purpose: We sought to determine whether noninvasive planimetry by magnetic resonance imaging (MRI) is suitably sensitive and reliable for visualizing the mitral valve area (MVA) and for detecting increases in the MVA after percutaneous balloon mitral valvuloplasty (PBMV). Materials and Methods: In 8 patients with mitral valve stenosis, planimetry of the MVA was performed before and after PBMV with a 1.5 T MR scanner using a breath-hold balanced gradient echo sequence (True FISP). The data was compared to the echocardiographically determined MVA (ECHO-MVA) as well as to the invasively calculated MVA by the Gorlin formula at catheterization (CATH-MVA). Results: PBMV was associated with an increase of 0.79 +/- 0.30 cm(2) in the MVA (Delta MRI-MVA). The correlation between Delta MRI-MVA and Delta CATH-MVA was 0.92 (p < 0.03) and that between Delta MRI-MVA and Delta ECHO-MVA was 0.90 (p < 0.04). The overall correlation between MRI-MVA and CATH-MVA was 0.95 (p < 0.0001) and that between MRI-MVA and ECHO-MVA was 0.98 (p < 0.0001). MRI-MVA slightly overestimated CATH-MVA by 8.0% (1.64 +/- 0.45 vs. 1.51 +/- 0.49 cm(2), p < 0.01) and ECHO-MVA by 1.8% (1.64 +/- 0.45 vs. 1.61 +/- 0.43 cm(2), n.s.). Conclusion: Magnetic resonance planimetry of the mitral valve orifice is a sensitive and reliable method for the noninvasive quantification of mitral stenosis and visualization of small relative changes in the MVA. This new method is therefore capable of diagnosing as well as following the course of mitral stenosis. It must be taken into consideration that planimetry by MRI slightly overestimates the MVA as compared to cardiac catheterization.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PRESSURE HALF-TIME; DOPPLER ULTRASOUND; AORTIC-STENOSIS; COMMISSUROTOMY; QUANTIFICATION; VALVOTOMY; ATRIAL; MR imaging; heart; mitral stenosis; planimetry; percutaneous balloon valvuloplasty |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Innere Medizin II Medicine > Lehrstuhl für Röntgendiagnostik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 09 Feb 2021 13:56 |
| Last Modified: | 09 Feb 2021 13:56 |
| URI: | https://pred.uni-regensburg.de/id/eprint/34272 |
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