Method of reducing imaging time in propeller-MRI by under-sampling and iterative image reconstruction
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United States of America Patent
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Issued Date -
May 21, 2009
app pub date -
Nov 15, 2007
filing date -
Nov 15, 2007
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Abandoned
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Abstract
A method for reducing PROPELLER MRI data acquisition times, by combining k-space under-sampling and iterative reconstruction using NUFFT, while maintaining similar image quality as in PROPELLER MRI with sufficient k-space sampling. Iterative image reconstruction using NUFFT minimizes image artifacts produced with conventional PROPELLER image reconstruction in under-sampled acquisitions. The data acquisition and image reconstruction parameters are selected in order to achieve image quality similar to that of sufficiently-sampled PROPELLER acquisitions for significantly shorter imaging time. An advantage of using under-sampled PROPELLER imaging is a reduction in acquisition time by as much as 50% without introducing significant artifacts, and while maintaining other benefits of PROPELLER imaging.
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