Systems and methods for scintillation camera-based motion tracking in radiotherapy

A method for emission guided radiation therapy (EGRT) using a radiotherapy system, the method being implemented on a computing device having at least one processor and at least one storage device, the radiotherapy system comprising:

• a radiotherapy device for treating a subject, the radiotherapy device including a scintillation camera, the scintillation camera being directed at a region of interest (ROI) of the subject, the subject being injected with a radioactive tracer or implanted with a radioactive marker before treatment, and the ROI undergoing a physiological motion during the treatment, and the method comprising:
• delivering, by the radiotherapy device, a treatment session to the subject, wherein during the treatment session,
• acquiring, by the scintillation camera, a target image of the ROI indicative of a distribution of the radioactive tracer or the radioactive maker in the ROI;
• and
• adapting a radiation beam to be delivered to the subject with respect to the physiological motion of the ROI by adjusting, based on the target image, the radiation beam.

A non-transitory computer-readable storage medium including a set of instructions for emission guided radiation therapy (EGRT) using a radiotherapy system, wherein the radiotherapy system includes:

• a radiotherapy device for treating a subject, the radiotherapy device including a scintillation camera, the scintillation camera being directed at a region of interest (ROI) of the subject, the subject being injected with a radioactive tracer or implanted with a radioactive marker before treatment, and the ROI undergoing a physiological motion during the treatment, wherein when the set of instructions is executed by at least one processor, the set of instructions direct the at least one processor to effectuate a method, the method comprising:
• delivering, by the radiotherapy device, a treatment session to the subject, wherein during the treatment session,
• acquiring, by the scintillation camera, a target image of the ROI indicative of a distribution of the radioactive tracer or the radioactive maker in the ROI;
• and
• adapting a radiation beam to be delivered to the subject with respect to the physiological motion of the ROI by adjusting, based on the target image, the radiation beam.