Methods and systems for gradient sensitivity correction
AssigneeWuhan United Imaging Life Science Instrument Co., Ltd.
InventorsJianfan Zhou, Bin Xing, Hongxia Lei, Renkuan Zhai, Yao Xing
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Abstract
Embodiments of the present disclosure provide methods and systems for gradient sensitivity correction. The method may include obtaining a three-dimensional image of a phantom. The three-dimensional image may be acquired using an MRI device, and the phantom may have a known actual size on a target axis. The method may include determining a fitting size of the phantom on the target axis by fitting the three-dimensional image. The method may further include correcting, based on the fitting size and the actual size, a gradient sensitivity of the MRI device.
Claims20
A method for gradient sensitivity correction, implemented by at least one processor, comprising:
- obtaining a three-dimensional image of a phantom, the three-dimensional image being acquired using a magnetic resonance imaging (MRI) device, and the phantom having a known actual size on a target axis;
- determining a fitting size of the phantom on the target axis by fitting the three-dimensional image;
- and
- correcting, based on the fitting size and the actual size, a gradient sensitivity of the MRI device, wherein the gradient sensitivity represents a scale relationship between a subject to be scanned by the MRI device and an image acquired by the MRI device in an MR scan of the subject.
A system for gradient sensitivity correction, comprising:
- a storage device configured to store computer instructions;
- and
- a processor connected with the storage device and configured to, when the computer instructions are executed, direct the system to:
- obtain a three-dimensional image of a phantom, the three-dimensional image being acquired using a magnetic resonance imaging (MRI) device, and the phantom having a known actual size on a target axis;
- determine a fitting size of the phantom on the target axis by fitting the three-dimensional image;
- and
- correct, based on the fitting size and the actual size, a gradient sensitivity of the MRI device, wherein the gradient sensitivity represents a scale relationship between a subject to be scanned by the MRI device and an image acquired by the MRI device in an MR scan of the subject.
A non-transitory computer-readable storage medium storing computer instructions that, when a computer reads the computer instructions, direct the computer to execute a method for gradient sensitivity correction, including:
- obtaining a three-dimensional image of a phantom, the three-dimensional image being acquired using a magnetic resonance imaging (MRI) device, and the phantom having a known actual size on a target axis;
- determining a fitting size of the phantom on the target axis by fitting the three-dimensional image;
- and
- correcting, based on the fitting size and the actual size, a gradient sensitivity of the MRI device.
Dependencies are inferred from the claim text.