Method for tracking movement of target in body by adopting magnetic resonance imaging
A magnetic resonance imaging and target technology, applied in X-ray/γ-ray/particle irradiation therapy, etc., can solve the problems of low tracking accuracy and inability to detect targets
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[0028] In the flow process of the present invention ( figure 1 ), step 101 requires three-dimensional imaging of the region of interest where the target is located. One embodiment uses magnetic resonance imaging. Set the parameters of the MRI scan so that the resulting image has a higher spatial resolution. At the same time, respiratory gating or ECG gating is used during scanning to suppress artifacts caused by physiological movements.
[0029] In the case that the deformation of the target itself can be ignored (that is, the target is regarded as a rigid body), 3D imaging only needs to be imaged once in one physiological motion cycle of the patient, and finally a 3D model of the target is obtained.
[0030] In the case where the deformation of the target itself needs to be considered, 3D imaging needs to be repeated multiple times within a physiological movement cycle of the patient, and then image segmentation is performed to obtain multiple 3D models of the target at dif...
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