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US 11,029,381 B2Granted
Method for varying undersampling dimension for accelerating multiple-acquisition magnetic resonance imaging and device for the same
AssigneeKorea Advanced Institute of Science and Technology
InventorsSung-Hong Park, Ki-Hwan Kim
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Abstract
Provided is an MRI image generation method including: acquiring first phase encoding lines obtained by undersampling along a first direction using an MRI device; acquiring second phase encoding lines obtained by undersampling in a second direction different from the first direction using the MRI device; generating a first MRI image based on the first phase encoding lines and the second phase encoding lines; and generating a second MRI image different from the first MRI image based on the first phase encoding lines and the second phase encoding lines.
Claims9
An MRI image generation method comprising:
- acquiring, with an MRI device comprising a first coil and a computing device, first phase encoding lines obtained by a first undersampling scheme along a first direction;
- acquiring, with the MRI device, second phase encoding lines obtained by a second undersampling scheme in a second direction different from the first direction;
- generating, with the computing device, a first MRI image based on the first phase encoding lines and the second phase encoding lines;
- and
- generating, with the computing device, a second MRI image different from the first MRI image based on the first phase encoding lines and the second phase encoding lines,
- wherein,
- the first undersampling scheme is a first data acquisition scheme that does not acquire a portion of the total K-space data that must be acquired to achieve a predetermined FOV and resolution of the first MRI image, and
- the second undersampling scheme is a second data acquisition scheme that does not acquire a portion of the total K-space data that must be acquired to achieve the predetermined FOV and resolution of the first MRI image.
5 more elements
The method of claim of 2, wherein,
- the determining of the first k-space comprises filling the first phase encoding lines into a k-space required to obtain a predetermined FOV and resolution, and filling a portion or all of a remaining portion of the k-space using the second phase encoding lines, and
- the determining of the second k-space comprises filling the first phase encoding lines into the k-space and filling a portion or all of the remaining portion of the k-space using the second phase encoding lines.
A method for training a deep learning network comprising:
- acquiring, with an MRI device comprising a first coil and a computing device, third phase encoding lines obtained by undersampling along a first direction, with respect to a first image acquisition layer;
- acquiring, with the MRI device, fourth phase encoding lines obtained by undersampling along a second direction different from the first direction, with respect to the first image acquisition layer;
- generating with the computing device, a fourth k-space based on the third phase encoding lines and the fourth phase encoding lines;
- generating, with the computing device, an input layer-MRI image for training by performing an FFT on the fourth k-space;
- acquiring, with the MRI device, fifth phase encoding lines obtained by full-sampling, with respect to the first image acquisition layer;
- generating, with the computing device, an output layer-MRI image for training using the fifth phase encoding lines;
- and
- providing, with the computing device, the input layer-MRI image for training to an input layer of the deep learning network and providing, with the computing device, the output layer-MRI image for training to an output layer of the deep learning network to train the deep learning network.
5 more elements
An MRI device comprising:
- an MRI scanner comprising a first coil;
- and
- an MRI computing device comprising a processing unit and
- a storage unit,
- wherein the processing unit is configured to perform:
- acquiring, with a MRI device, first phase encoding lines obtained by a first undersampling scheme along a first direction;
- acquiring, with the MRI device, second phase encoding lines obtained by a second undersampling scheme in a second direction different from the first direction;
- generating a first MRI image based on the first phase encoding lines and the second phase encoding lines;
- and
- generating a second MRI image different from the first MRI image based on the first phase encoding lines and the second phase encoding lines,
- wherein,
- the first undersampling scheme is a first data acquisition scheme that does not acquire a portion of the total K-space data that must be acquired to achieve a predetermined FOV and resolution of the first MRI image, and
- the second undersampling scheme is a second data acquisition scheme that does not acquire a portion of the total K-space data that must be acquired to achieve the predetermined FOV and resolution of the first MRI image.
10 more elements
Dependencies are inferred from the claim text.