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Three-Dimensional Echocardiography of the Aortic Valve: Feasibility, Clinical Potential, and Limitations
Jaroslaw D. Kasprzak1, Alessandro Salustri, Jos R.T.C. Roelandt
1Thoraxcenter, Bd 408, Erasmus University Rotterdam, P.O. Box 1738, 3000DR Rotterdam, The Netherlands.
Insights
Three-dimensional echocardiography (3D echo) is a feasible tool for assessing aortic valve anatomy, providing valuable additional information in many patients. This advanced imaging technique offers excellent or adequate visualization in 81% of cases, aiding in clinical utility.
Area of Science:
- Cardiology
- Medical Imaging
- Echocardiography
Background:
- The diagnostic value of three-dimensional echocardiography (3D echo) for aortic valve assessment remains largely unestablished.
- Existing literature lacks comprehensive data on the feasibility and clinical utility of 3D echo in evaluating aortic valve morphology and function.
Purpose of the Study:
- To evaluate the feasibility of using three-dimensional echocardiography (3D echo) for assessing aortic valve anatomy.
- To determine the potential clinical utility of 3D echo in providing additional diagnostic information compared to conventional two-dimensional echocardiography.
Main Methods:
- 32 patients underwent transesophageal echocardiography with rotational scanning and ECG gating for 3D reconstruction.
- Images were postprocessed to create anyplane cutplanes and volume-rendered 3D views of the aortic valve.
- Two observers analyzed 3D reconstructions and compared findings with 2D echocardiography results.
Main Results:
- Excellent or adequate image quality for aortic valve assessment was achieved in 81% of patients (26/32).
- 3D echocardiography provided additional morphologic information in 31% of patients (10/32) compared to 2D echocardiography.
- Image quality was superior for native valves compared to prosthetic valves (P < 0.05).
Conclusions:
- Three-dimensional echocardiography (3D echo) is a feasible technique for aortic valve evaluation, yielding high-quality reconstructions in a majority of patients.
- 3D echo offers significant potential for enhancing diagnostic accuracy by providing additional morphologic insights beyond conventional 2D echocardiography.
- The technique demonstrates particular utility in the assessment of native aortic valves, suggesting broader clinical applicability in this patient group.
Abstract:
OBJECTIVES: The purpose of our study was to assess the feasibility and potential clinical utility of three-dimensional echocardiography for evaluation of the aortic valve. BACKGROUND: The value of three-dimensional echocardiographic assessment of the aortic valve has not been established yet. METHODS: The study group comprised 32 patients (11 women, 21 men), mean age 56.1 (range 20-82). Seven morphologically normal valves, 5 homografts, 6 mechanical prostheses, and 14 valves of abnormal morphology were evaluated. Images were acquired during a routine multiplane transesophageal echocardiographic examination (rotational scan with 2 degrees interval, respiration, and electrocardiogram [ECG] gating) and postprocessed off-line. A selection of reconstructed cutplanes (anyplane mode) and volume-rendered three-dimensional views of aortic valve anatomy were analyzed by two observers and compared with two-dimensional echocardiography findings. RESULTS: The quality of reconstructions was scored excellent when permitting unrestricted assessment of aortic valve anatomy with optimized planimetric measurements (19 patients, 59%), adequate when aortic valve was partially visualized (7 patients, 22%), or inadequate when no assessment was possible (6 patients, 19%, including 5 with prosthetic valves). Three-dimensional echocardiography provided additional information in ten (31%) patients as compared with the two-dimensional echocardiographic findings. CONCLUSIONS: It can be concluded that three-dimensional echocardiographic reconstruction of the aortic valve is feasible, with excellent or adequate quality in 81% of patients, more frequently in native than in prosthetic valves, P < 0.05. Morphologic information additional to that provided by two-dimensional echocardiography is obtained in a significant proportion of patients.