Abstract
Magnetic Resonance Imaging (MRI) image reconstruction, based on the frequency-domain Super-Resolution (SR) algorithm, is presented in this paper. It is shown that the approach improves MRI spatial resolution in cases where Periodically Rotated Overlapping Parallel Lines with Enhanced Reconstruction (PROPELLER) sequences are used. The PROPELLER MRI method collects data in rectangular 'blades' rotated around the origin of the k-space. Inter-blade patient motion is the premise for the use of SR technique. Images obtained from sets of irregularly located frequency-domain samples are combined into the high-resolution MRI image. The SR reconstruction replaces the usually applied direct averaging of low-resolution images. This is an expanded version of a paper presented at the 3rd IEEE International Workshop on Medical Measurements and Applications, 9 10 May 2008, Ottawa, ON, Canada.
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