CREATING TREATMENT FIELD USING INITIAL FIELD AND PATIENT SPECIFIC GEOMETRY AND ACHIEVABLE DOSE
First Claim
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1. A method for determining a radiation treatment plan for controlling a radiation treatment system to provide radiation to a patient, the method comprising performing by the computer system:
- receiving one or more images associated with the patient;
identifying a target area within the patient based on the one or more images;
receiving a selection of a radiation treatment template, wherein the radiation treatment template includes;
an arc field with an arc field pathway such that the radiation treatment system provides radiation to the target area while a gantry of the radiation treatment system is moving along the arc field pathway, anda static field such that the radiation treatment system provides radiation to the target area while the gantry is stationary, the static field having a position at an initial position value;
obtaining a cost function that outputs a quality score that varies with position values of the static field;
optimizing the position of the static field by changing the position of the static field and identifying an optimal position value having an optimal quality score, wherein the position of the static field is constrained to be located within a predefined distance of the initial position value; and
generating a radiation treatment plan using the arc field with the arc field pathway and the static field having the optimal position value, the radiation treatment plan including specifications for providing radiation with the radiation treatment system to the patient over time, along the arc field pathway and at the optimal position value.
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Abstract
Methods and systems are provided for developing radiation therapy treatment plans. A treatment template with radiation fields can be chosen for a patient based on a tumor location. Static radiation field positions can be adjusted for the patient, while arc radiation fields may remain the same. Static radiation field positions can be adjusted using dose gradient, historical patient data, and other techniques.
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Citations
20 Claims
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1. A method for determining a radiation treatment plan for controlling a radiation treatment system to provide radiation to a patient, the method comprising performing by the computer system:
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receiving one or more images associated with the patient; identifying a target area within the patient based on the one or more images; receiving a selection of a radiation treatment template, wherein the radiation treatment template includes; an arc field with an arc field pathway such that the radiation treatment system provides radiation to the target area while a gantry of the radiation treatment system is moving along the arc field pathway, and a static field such that the radiation treatment system provides radiation to the target area while the gantry is stationary, the static field having a position at an initial position value; obtaining a cost function that outputs a quality score that varies with position values of the static field; optimizing the position of the static field by changing the position of the static field and identifying an optimal position value having an optimal quality score, wherein the position of the static field is constrained to be located within a predefined distance of the initial position value; and generating a radiation treatment plan using the arc field with the arc field pathway and the static field having the optimal position value, the radiation treatment plan including specifications for providing radiation with the radiation treatment system to the patient over time, along the arc field pathway and at the optimal position value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for determining a radiation treatment plan, the method comprising:
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receiving one or more images associated with the patient; identifying a first target area within the patient based on the one or more images, the first target area having a first isocenter within the patient; determining, at a computer, one or more first fields such that the radiation treatment system provides radiation to the first target area, identifying a second target area within the patient based on the one or more images, the second target area having a second isocenter within the patient; determining a transformation that transforms the first isocenter to be the second isocenter; using the transformation to transform the one or more first radiation fields to generate one or more second fields; generating a treatment plan using the one or more first fields and the one or more second fields, the radiation treatment plan including specifications for providing radiation with the radiation treatment system to the patient over time according to the one or more first fields and the one or more second fields. - View Dependent Claims (17, 18, 19, 20)
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Specification