发明名称 |
MRI ACQUISITION USING SENSE AND HIGHLY UNDERSAMPLED FOURIER SPACE SAMPLING |
摘要 |
An MRI system produces a three-dimensional image by acquiring NMR signals that fully sample a central region of k-space and partially sample peripheral region of k-space. Specifically, k-space is arranged as a three-dimensional (3D) Cartesian grid of points that is divided into a central region of k-space and a peripheral region of k-space. Points are selected in k-space within a plurality of radial vanes that extend radially outward from the central region of k-space through the peripheral region of k-space as viewed in a plane sampled by two phase encoding gradients to create a plurality of gaps between the radial vanes that is substantially a factor of N times greater in area than the radial vanes. Using an MRI system having arrays of RF receiver coils, NMR signals are acquired from a subject to fully sample the central region of the 3D k-space and undersample the peripheral region of k-space by only sampling k-space within the plurality of radial vanes. An image of the subject is reconstructed using the acquired NMR signals.
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申请公布号 |
US2009238430(A1) |
申请公布日期 |
2009.09.24 |
申请号 |
US20090435391 |
申请日期 |
2009.05.04 |
申请人 |
HAIDER CLIFTON R;RIEDERER STEPHEN J |
发明人 |
HAIDER CLIFTON R.;RIEDERER STEPHEN J. |
分类号 |
G06K9/00 |
主分类号 |
G06K9/00 |
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