Dynamic Cine Imaging of the Mitral Valve with 16-MDCT: A Feasibility Study
- 1 September 2005
- journal article
- Published by American Roentgen Ray Society in American Journal of Roentgenology
- Vol. 185 (3), 636-646
- https://doi.org/10.2214/ajr.185.3.01850636
Abstract
OBJECTIVE. Our aim was to assess the feasibility and image quality of dynamic cine-mode imaging of the mitral valve using retrospectively ECG-gated 16-MDCT. SUBJECTS AND METHODS. Contrast-enhanced MDCT was performed in 37 patients who have a normal mitral valve, as shown on transesophageal echocardiography. Twenty CT data sets covering the valve apparatus were reconstructed every 5% step of the R-R interval. Multiplanar reconstructions were performed in the parallel short axis and perpendicular long axis of the left ventricle. Two independent blinded reviewers evaluated the image quality for dynamic cine-mode visualization of the valve components in systole and diastole and during the transitional phases in between. RESULTS. Interobserver agreement for image quality ratings of valve components in all cardiac cycle phases ranged from good to excellent. Image quality for the visualization of valve leaflets, apposition zone, commissures, and mitral annulus (ranging from adequate to excellent) was significantly superior on perpendicular plane images than on parallel plane images for all cardiac phases (p < 0.05). Tendinous cords were visualized on both perpendicular and parallel planes with bad to adequate quality, whereas visualization of the papillary muscles was adequate to excellent on both imaging planes. Visualization of each valve component was superior in systole and diastole in both imaging planes as compared with the transitional phases (p <0.001). CONCLUSION. Noninvasive cine-mode imaging of the mitral valve using retrospectively ECG-gated MDCT is feasible and allows accurate visualization of the moving valve. Perpendicular long-axis reconstructions yield images of superior quality when compared with the short-axis reconstructions and enable a determination of its functional morphology.Keywords
This publication has 29 references indexed in Scilit:
- Electron beam CT versus helical CT scans for assessing coronary calcification: current utility and future directionsAmerican Heart Journal, 2003
- Assessment of valve disease: Qualitative and quantitativeMagnetic Resonance Imaging Clinics of North America, 2003
- Coronary Artery Calcium MeasurementAmerican Journal of Roentgenology, 2001
- Noninvasive detection and evaluation of atherosclerotic coronary plaques with multislice computed tomographyJournal of the American College of Cardiology, 2001
- Noninvasive Coronary Angiography by Retrospectively ECG-Gated Multislice Spiral CTCirculation, 2000
- Valvular heart disease: assessment of valve morphology and quantification using MR.Herz, 2000
- ASE/SCA Guidelines for Performing a Comprehensive Intraoperative Multiplane Transesophageal Echocardiography Examination: Recommendations of the American Society of Echocardiography Council for Intraoperative Echocardiography and the Society of Cardiovascular Anesthesiologists Task Force for Certification in Perioperative Transesophageal EchocardiographyJournal of the American Society of Echocardiography, 1999
- Valvular Heart DiseaseThe New England Journal of Medicine, 1997
- Cineangiography of the heart in a single breath hold with a segmented turboFLASH sequence.Radiology, 1991
- The Mitral ApparatusCirculation, 1972