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| Evaluation of rheumatic mitral valve area using real-time three-dimensional xPlane imaging |
| CHEN Xin, FENG Wei, YANG Jun, TANG Li |
| Echo Lab, the First Affiliated Hospital of China Medical University, Shenyang 110001, China |
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Abstract Objective: To determine the feasibility and accuracy of real time three dimensional xPlane imaging(RT3DxPlane) for the evaluation of mitral valve area(MVA) in patients with rheumatic mitral stenosis. Methods: MVA were measured using two dimensional echocardiography(MVA2D) and RT 3DxPlane (MVAxPlane) in 36 patients. The stenotic mitral specimens were acquired in mitral valve replacement surgery, and MVAOP as the golden standard of MVA was calculated with photoshop and Matlab software. Results: There was no significant difference between MVAOP and MVAxPlane(P>0.05), but statistical difference was found between MVAOP and MVA2D(P<0.05). MVA2D, MVA3D and MVAOP correlation coefficient were 0.95 and 0.97, respectively(P<0.05). Bland-Altman analysis demonstrated that both MVA2D and MVAxPlane had good agreement with MVAOP. Conclusion: RT 3DxPlane imaging can provide an easy, feasible and accurate method for quantifying MVA.
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Received: 25 February 2011
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2011, Vol. 22 
