System and method for hybrid imaging
AssigneeShanghai United Imaging Healthcare Co., Ltd.
InventorZheng Zhang
Life of this patent
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Abstract
The present disclosure provides systems and methods for hybrid imaging. The systems and methods may obtain a first magnetic resonance (MR) image of a target object. The first MR image may be acquired by a magnetic resonance imaging (MRI) device using a first imaging sequence. The systems and methods may also obtain a second MR image of the target object. The second MR image may be acquired by the MRI device using a second imaging sequence. The second MR image may correspond to a target respiratory phase of the target object. The systems and methods may also obtain a target emission computed tomography ECT) image of the target object. The target ECT image may correspond to the target respiratory phase. The systems and methods may further fuse, based on the second MR image, the first MR image and the target ECT image.
Claims18
A system for hybrid imaging, comprising:
- at least one non-transitory storage device including a set of instructions;
- and
- at least one processor configured to communicate with the at least one non-transitory storage device, wherein when executing the set of instructions, the at least one processor is configured to direct the system to perform operations including:
- obtaining a first magnetic resonance (MR) image of a target object, the first MR image being acquired by a magnetic resonance imaging (MRI) device using a first imaging sequence with cardiac gating during a breath-hold period of the target object;
- obtaining a second MR image of the target object, the second MR image being acquired with respiratory gating, by the MRI device using a second imaging sequence, when the target object is breathing freely;
- obtaining emission computed tomography (ECT) data of the target object acquired when the target object is breathing freely;
- generating, based on the ECT data, candidate ECT images corresponding to a plurality of respiratory phases using a respiratory gated reconstruction algorithm;
- determining a target ECT image matching the second MR image from the candidate ECT images corresponding to the plurality of respiratory phases;
- determining a set of registration parameters between the first MR image and the second MR image by registering the first MR image and the second MR image;
- transforming the target ECT image based on the set of registration parameters;
- and
- generating an ECT-MR fusion image by fusing the first MR image and the transformed target ECT image.
A method for hybrid imaging, which is implemented on a computing device that includes at least a non-transitory storage device and at least the processor, the method comprising:
- obtaining a first magnetic resonance (MR) image of a target object, the first MR image being acquired by a magnetic resonance imaging (MRI) device using a first imaging sequence;
- obtaining a second MR image of the target object, the second MR image being acquired by the MRI device using a second imaging sequence with respiratory gating, and the second MR image corresponding to a target respiratory phase of the target object;
- obtaining emission computed tomography (ECT) data of the target object when the target object is breathing freely;
- generating, based on the ECT data, candidate ECT images corresponding to a plurality of respiratory phases using a respiratory gated reconstruction algorithm;
- determining a target ECT image matching the second MR image from the candidate ECT images corresponding to the plurality of respiratory phases;
- determining a set of registration parameters between the first MR image and the second MR image by registering the first MR image and the second MR image;
- and
- generating an ECT-MR fusion image by fusing, based on the set of registration parameters between the first MR image and the second MR image, the first MR image and the target ECT image, wherein a registration between the target ECT image and the first MR image is transformed to the registration between the second MR image and the first MR image.
A system for hybrid imaging, comprising:
- at least one non-transitory storage device including a set of instructions;
- and
- at least one processor configured to communicate with the at least one non-transitory storage device, wherein when executing the set of instructions, the at least one processor is configured to direct the system to perform operations including:
- obtaining a first magnetic resonance (MR) image of a target object, the first MR image being acquired by a magnetic resonance imaging (MRI) device using a first imaging sequence;
- obtaining a second MR image of the target object, the second MR image being acquired by the MRI device using a second imaging sequence with respiratory gating, and the second MR image corresponding to a target respiratory phase of the target object;
- obtaining emission computed tomography (ECT) data of the target object when the target object is breathing freely;
- generating, based on the ECT data, candidate ECT images corresponding to a plurality of respiratory phases using a respiratory gated reconstruction algorithm;
- determining a target ECT image matching the second MR image from the candidate ECT images corresponding to the plurality of respiratory phases;
- determining a set of registration parameters between the target ECT image and the first MR image by registering the first MR image and the second MR image, wherein the target ECT image is not involved in a determination process of the set of registration parameters, and
- generating an ECT-MR fusion image by fusing, based on the set of registration parameters, the first MR image and the target ECT image.
Dependencies are inferred from the claim text.