Anzeige
Erschienen in:
26.05.2017 | Research Article
Single-breath-hold 3-D CINE imaging of the left ventricle using Cartesian sampling
Erschienen in: Magnetic Resonance Materials in Physics, Biology and Medicine | Ausgabe 1/2018
Einloggen, um Zugang zu erhaltenAbstract
Objectives
Our objectives were to evaluate a single-breath-hold approach for Cartesian 3-D CINE imaging of the left ventricle with a nearly isotropic resolution of \(1.9 \times 1.9 \times 2.5\,{\text {mm}^3}\) and a breath-hold duration of \(\sim \)19 s against a standard stack of 2-D CINE slices acquired in multiple breath-holds. Validation is performed with data sets from ten healthy volunteers.
Materials and methods
A Cartesian sampling pattern based on the spiral phyllotaxis and a compressed sensing reconstruction method are proposed to allow 3-D CINE imaging with high acceleration factors. The fully integrated reconstruction uses multiple graphics processing units to speed up the reconstruction. The 2-D CINE and 3-D CINE are compared based on ventricular function parameters, contrast-to-noise ratio and edge sharpness measurements.
Results
Visual comparisons of corresponding short-axis slices of 2-D and 3-D CINE show an excellent match, while 3-D CINE also allows reformatting to other orientations. Ventricular function parameters do not significantly differ from values based on 2-D CINE imaging. Reconstruction times are below 4 min.
Conclusion
We demonstrate single-breath-hold 3-D CINE imaging in volunteers and three example patient cases, which features fast reconstruction and allows reformatting to arbitrary orientations.