Title :
Partial Fourier reconstruction using subspace projection
Author :
Uma, K. ; Chandrasekharan, K. ; Paul, Jai Sachith
Author_Institution :
Indian Inst. of Inf. Technol. & Manage.-Kerala, Trivandrum, India
Abstract :
Scan time reduction in MRI can be achieved by partial k-space reconstruction. Truncation of the k-space results in generation of artifacts in the reconstructed image. A subspace projection algorithm is developed for artifact-free reconstruction of sparse MRI. The algorithm is applied to a frequency weighted k-space, which fits into a signal-space model for sparse MR images. The application is illustrated using Magnetic Resonance Angiogram (MRA).
Keywords :
biomedical MRI; image reconstruction; medical image processing; MRA; artifact generation; artifact-free reconstruction; frequency weighted k-space; k-space truncation; magnetic resonance angiogram; partial Fourier reconstruction; partial k-space image reconstruction; scan time reduction; signal-space model; sparse MR images; subspace projection algorithm; Filling; Image reconstruction; Magnetic resonance; Magnetic resonance imaging; Noise; Reconstruction algorithms; Vectors; 2D Partial k-space; Sparse MR; Subspace projection;
Conference_Titel :
Computer Vision, Pattern Recognition, Image Processing and Graphics (NCVPRIPG), 2013 Fourth National Conference on
Conference_Location :
Jodhpur
Print_ISBN :
978-1-4799-1586-6
DOI :
10.1109/NCVPRIPG.2013.6776211
