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Magn Reson Med. 1996 Apr;35(4):554-62.

Implementation of a fast gradient-echo SVD encoding technique for dynamic imaging.

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Department of Radiology, Harvard Medical School, Boston, Massachusetts, USA.


In the paper, the results of a fast gradient-echo implementation of the singular value decomposition (SVD) encoding technique for dynamic imaging are presented. The method used is an adaptation with several critical modifications of a keyholetype approach previously proposed but not implemented. The method was tested by imaging the events following injection of a contrast agent into a phantom, producing a series of dynamic image updates. It is demonstrated that, for this type of application, the SVD encoding technique adequately follows dynamic changes with even a small number of encodes. The result is compared qualitatively to that obtained by standard Fourier-based keyhole imaging and is shown to provide improved spatial resolution of dynamic events when updating with the same number of encodes.

[Indexed for MEDLINE]

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