Title :
An iterative approach for reconstruction of arbitrary sparsely sampled magnetic resonance images
Author :
Pirsiavash, Hamed ; Soleymani, Mohammad ; Hossein-Zadeh, Gholam-Ali
Author_Institution :
Dept. of Electr. Eng., Sharif Univ. of Technol., Tehran, Iran
Abstract :
In many fast MR imaging techniques, K-space is sampled sparsely in order to gain a fast traverse of K-space. These techniques use non-Cartesian sampling trajectories like radial, zigzag, and spiral. In the reconstruction procedure, usually interpolation methods are used to obtain missing samples on a regular grid. In this paper, we propose an iterative method for image reconstruction which uses the black marginal area of the image. The proposed iterative solution offers a great enhancement in the quality of the reconstructed image in comparison with conventional algorithms like zero filling and neural network. This method is applied on MRI data and its improved performance over other methods is demonstrated.
Keywords :
biomedical MRI; image enhancement; image reconstruction; iterative methods; medical image processing; Interpolation method; K-space; MRI data; arbitrary sparsely sampled magnetic resonance image; black marginal area; image enhancement; image quality; image reconstruction; iterative method; neural network; zero filling; Filling; Image reconstruction; Image sampling; Interpolation; Iterative algorithms; Iterative methods; Magnetic resonance; Magnetic resonance imaging; Neural networks; Spirals;
Conference_Titel :
Computer-Based Medical Systems, 2005. Proceedings. 18th IEEE Symposium on
Print_ISBN :
0-7695-2355-2
DOI :
10.1109/CBMS.2005.27