Debl, Kurt and Djavidani, Behrus and Seitz, Johannes and Nitz, Wolfgang and Schmid, Franz-Xaver and Muders, Frank and Buchner, Stefan and Feuerbach, Stefan and Riegger, Guenter and Luchner, Andreas (2005) Planimetry of aortic valve area in aortic stenosis by magnetic resonance imaging. INVESTIGATIVE RADIOLOGY, 40 (10). pp. 631-636. ISSN 0020-9996,
Full text not available from this repository. (Request a copy)Abstract
Background: The aim of the study was to determine whether noninvasive planimetry of aortic valve area (AVA) by magnetic resonance imaging (MRI) is feasible and reliable in patients with valvular aortic stenosis in comparison to transesophageal echocardiography (TEE) and catheterization. Methods and Results: Planimetry of AVA by MRI (MRI-AVA) was performed on a clinical magnetic resonance system. (1.5-T Sonata, Siemens Medical Solutions) in 33 patients and compared with AVA calculated invasively by the Gorlin-formula at catheterization (CATH-AVA, n = 33) as well as to AVA planimetry by multiplane TEE (TEE-AVA, n = 27). Determination of MRI-AVA was possible with an adequate image quality in 82% (27/33), whereas image quality of TEE-AVA was adequate only in 56% (15/27) of patients because of calcification artifacts (P = 0.05). The correlation between MRI-AVA and CATH-AVA was 0.80 (P < 0.0001) and the correlation of MRI-AVA and TEE-AVA was 0.86 (P < 0.0001). MRI-AVA overestimated TEE-AVA by 15% (0.98 +/- 0.31 cm(2) vs. 0.85 +/- 0.3 cm(2), P < 0.001) and CATH-AVA by 27% (0.94 +/- 0.29 cm(2) vs. 0.74 +/- 0.24 cm(2), p < 0.0001). Nevertheless, a MRI-AVA below 1,3 cm(2) indicated severe aortic stenosis (CATH-AVA < 1 cm(2)) with a sensitivity of 96% and a specificity of 100% (ROC area 0.98). Conclusions: Planimetry of aortic valve area by MRI can be performed with better image quality as compared with TEE. In the clinical management of patients with aortic stenosis, it has to be considered that MRI slightly overestimates aortic valve area as compared with catheterization despite an excellent correlation.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MULTIPLANE TRANSESOPHAGEAL ECHOCARDIOGRAPHY; GORLIN FORMULA; QUANTIFICATION; HEART; CATHETERIZATION; aortic stenosis; planimetry; magnetic resonance imaging; cardiac catheterization; transesophageal echocardiography |
| 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: | 26 Apr 2021 10:01 |
| Last Modified: | 26 Apr 2021 10:01 |
| URI: | https://pred.uni-regensburg.de/id/eprint/35588 |
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