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Abstract #2175

Compressed Sensing: Applications in Hyperpolarised 3He Lung MRI

Salma Ajraoui1, Kuan J. Lee1,2, Juan Parra-Robles1, Martin H. Deppe1, Steve R. Parnell1, Jim M. Wild1

1Academic Unit of Radiology, University of Sheffield, Sheffield, UK; 2Dept. of Diagnostic Radiology, Medical Physics, University Hospital Freiburg, Freiburg, Germany

The purpose of this study was to investigate to feasibility of applying compressed sensing to hyperpolarised 3He gas MRI. The aspiration of this application is to reduce the number of RF excitations needed to fully reconstruct an image and to speed up the acquisition. The method was applied to reconstruction of Cartesian encoded HP 3He gas images (ventilation and ADC). HP 3He lung images appear to be compatible with the CS method and a good 2D reconstruction with relatively small error was achieved with a reduction factor of 2.