Technical Program

Paper Detail

Paper:	SA-AM-OS1.5
Session:	MRI Acquisition and Reconstruction
Time:	Saturday, April 8, 11:10 - 11:30
Presentation:	Oral
Title:	Dynamic MRI Using Spatiotemporal Modeling with Phased Array Coils
Authors:	Dan Xu; University of Illinois at Urbana-Champaign
	Leslie Ying; University of Wisconsin at Milwaukee
	Zhi-Pei Liang; University of Illinois at Urbana-Champaign
Abstract:	This paper presents a model-based dynamic MRI method with time-sequential sampling in k-t space using phased array coils. The temporal variation of the dynamic object is modeled as a superposition of motion elements while the spatial variation is captured by the series coefficients, thereby converting the dynamic imaging problem to a parameter identification problem. Parallel data acquisition using phased array coils is used to balance k-space and time-domain undersampling. Simulations based on experimental cardiac data are carried out, which show that the proposed method can reconstruct motion artifacts-free images with very high spatiotemporal resolution.

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