Interventional Magnetic Resonance Imaging Method, System and Medium Based on Low Rank and Sparse Decomposition
A technology of sparse decomposition and imaging method, which is applied in the direction of using nuclear magnetic resonance image system for measurement, magnetic resonance measurement, and measurement of magnetic variables. It can solve the problems of difficult real-time imaging navigation, real-time imaging and interventional navigation, and avoid motion Artifacts, good reconstruction image quality, good real-time effect
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[0068] A magnetic resonance interventional imaging method based on low-rank and sparse decomposition provided by the present invention comprises the following steps:
[0069] Step 1: During the intervention, the k-space data is collected continuously using the golden angle radial sampling method;
[0070] In order to achieve fast MRI interventional imaging, the golden angle radial sampling method is adopted to continuously collect k-space data during the intervention process, that is, the sampling radial spoke interval angle is the "golden angle", such as figure 1 (a) shown.
[0071] Step 2: Group the collected spatial data;
[0072] In dynamic magnetic resonance imaging, in the prior art, all k-space data are usually collected retrospectively and reconstructed, and each frame of image needs to be reconstructed with a certain number of radial spokes, such as figure 1 (b) shown. This kind of retrospective reconstruction is not suitable for MRI interventional imaging that req...
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