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公开(公告)号:US11275142B1
公开(公告)日:2022-03-15
申请号:US17090557
申请日:2020-11-05
发明人: Florian Wiesinger , Ana Beatriz Solana Sanchez , Anne Menini , Emil Albert Ljungberg , Tobias Charles Wood , Gareth John Barker , Steven Charles Williams
IPC分类号: G01R33/565 , G01R33/56 , G01R33/567 , G06T11/00 , G01R33/48
摘要: A method for generating motion-corrected medical images includes obtaining, via a processor, k-space data of a region of interest acquired by a magnetic resonance imaging system utilizing a 3D radial pulse sequence with ZTE acquisition including optional magnetization preparation pulses. The method also includes sampling, via the processor, the k-space data to obtain a plurality of interleaved k-space segments. The method further includes reconstructing, via the processor, one or more interleaved k-space segments of the plurality of interleaved k-space segments to generate a respective motion navigator volume. The method even further includes co-registering, via the processor, each respective motion navigator volume to estimate motion and performing motion correction on the one or more interleaved k-space segments and their corresponding k-space trajectories. The method still further includes generating, via the processor, a motion-corrected volume from all of the motion corrected interleaved k-space segments and their corresponding motion corrected k-space trajectories.
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公开(公告)号:US11550013B2
公开(公告)日:2023-01-10
申请号:US17038698
申请日:2020-09-30
发明人: Florian Wiesinger , Ana Beatriz Solana Sanchez , Brice Fernandez , Peder Larson , Andrew Leynes
IPC分类号: G01R33/561 , G01R33/48 , G01R33/56
摘要: A magnetic resonance (MR) dynamically imaging method is provided. The method includes acquiring a functional MR dataset including frames of k-space datasets, while a functional stimulus is applied to the subject. Acquiring the functional MR dataset includes, acquiring a frame of k-space datasets by setting an orientation as an initial angle, and acquiring a free induction decay (FID) dataset. Acquiring an FID dataset includes applying a sequence of gradients, each gradient of the sequence corresponding to a k-space spoke, wherein the sequence of k-space spokes define a k-space segment having the orientation in a 3D k-space volume. Acquiring a frame of k-space datasets also includes acquiring a gradient echo dataset corresponding to the FID dataset, and updating the orientation as golden angles. The method also includes generating anatomical MR images and functional images based on the functional MR dataset.
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公开(公告)号:US20220099776A1
公开(公告)日:2022-03-31
申请号:US17038698
申请日:2020-09-30
发明人: Florian Wiesinger , Ana Beatriz Solana Sanchez , Brice Fernandez , Peder Larson , Andrew Leynes
IPC分类号: G01R33/561 , G01R33/56 , G01R33/48
摘要: A magnetic resonance (MR) dynamically imaging method is provided. The method includes acquiring a functional MR dataset including frames of k-space datasets, while a functional stimulus is applied to the subject. Acquiring the functional MR dataset includes, acquiring a frame of k-space datasets by setting an orientation as an initial angle, and acquiring a free induction decay (FID) dataset. Acquiring an FID dataset includes applying a sequence of gradients, each gradient of the sequence corresponding to a k-space spoke, wherein the sequence of k-space spokes define a k-space segment having the orientation in a 3D k-space volume. Acquiring a frame of k-space datasets also includes acquiring a gradient echo dataset corresponding to the FID dataset, and updating the orientation as golden angles. The method also includes generating anatomical MR images and functional images based on the functional MR dataset.
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