Title :
High resolution cardiac magnetic resonance imaging: a model-based approach
Author :
Ji, Jim ; Liang, Zhi-Pei
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
Abstract :
Presents a model-based method for dynamic cardiac magnetic resonance (MR) imaging. This method represents temporal variations of MR signals from the beating heart by a temporal generalized series, which enables sparse sampling of the (k,t)-space. Various issues related to basis selection and parameter estimation are discussed. Experimental and simulation results are also presented to show that the proposed method can obtain high-resolution time-sequential images from a time-varying object with periodic or aperiodic cyclic signal variations.
Keywords :
biomedical MRI; cardiology; image resolution; image sampling; medical image processing; motion estimation; parameter estimation; principal component analysis; time series; (k,t)-space; MR signals; aperiodic cyclic signal variations; basis selection; beating heart; dynamic cardiac MRI; high resolution cardiac magnetic resonance imaging; model-based approach; motion frequency estimation; parameter estimation; periodic cyclic signal variations; sparse sampling; temporal generalized series; temporal variations; time-sequential images; time-varying object; Frequency estimation; Heart; High-resolution imaging; Image resolution; Integrated circuit modeling; Magnetic resonance; Magnetic resonance imaging; Parameter estimation; Signal resolution; Spatial resolution;
Conference_Titel :
Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE
Print_ISBN :
0-7803-7211-5
DOI :
10.1109/IEMBS.2001.1017226
