11 May 1994 Image database to constrain the acquisition and reconstruction of MR images of the human head
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Abstract
A training set of MR images of normal and abnormal heads was used to derive a complete set of orthonormal basis functions which converged to headlike images more rapidly than Fourier basis functions. The new image representation was used to reconstruct MR images of other heads from a relatively small number of phase- encoded signal measurements. The training images also determined exactly which phase-encoded signals should be measured to minimize image reconstruction error. These signals were nonuniformly scattered throughout k-space. Experiments showed that head images reconstructed with the new method had less truncation artifacts than conventional Fourier images, reconstructed from the same number of signals.
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Yue Cao, Yue Cao, David N. Levin, David N. Levin, "Image database to constrain the acquisition and reconstruction of MR images of the human head", Proc. SPIE 2167, Medical Imaging 1994: Image Processing, (11 May 1994); doi: 10.1117/12.175060; https://doi.org/10.1117/12.175060
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