Method and system for physiological gating of radiation therapy
AssigneeVarian Medical Systems, Inc.
InventorsMajid L. Riaziat, Stanley Mansfield, Hassan Mostafavi
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Abstract
A method and system for physiological gating for radiation therapy is disclosed. According to an aspect, the invention comprises the use of an optical or video image system to measure regular physiological movement of a patient's body. The image data can be used to quantify voluntary or involuntary motion of the patient that may affect the delivery of radiation to a target tissue. A gating signal can be generated to suspend delivery of radiation upon certain threshold event detected in the physiological movement.
Claims53
A system for determining one or more treatment intervals for radiation therapy comprising:
- an imaging system for generating image data representative of an internal region of a patient's body;
- an instrument for generating motion information relating to physiological movement of the patient's body;
- and
- a user interface configured to synchronously display in a single display the image data with a motion signal chart the motion signal chart presenting a representation of the motion information and representing physiological movement during a measurement time period;
- wherein the user interface is further configured for allowing a gating signal chart to be determined based on the image data and the motion signal chart, the gating signal chart representing one or more treatment intervals.
A system for determining one or more treatment intervals in a planning phase of a treatment, comprising:
- means for recording image data representative of internal tissue targeted for irradiation;
- means for generating motion data representative of physiological movement of a patient;
- means for synchronously displaying in a single display the image data with a motion signal chart, the motion signal chart presenting a representation the generated motion data and representing physiological movement during a measurement time period;
- and
- means for determining a gating signal chart based on the image data and the motion signal chart, the gating signal chart representing one or more treatment intervals.
A method for determining one or more treatment intervals for radiation therapy comprising:
- recording image data representative of internal tissue targeted for irradiation;
- generating motion data representative of a physiological movement that occurs while image data is being recorded;
- synchronously displaying the image data with a motion signal chart, the motion signal chart presenting a representation of the generated motion data and representing physiological movement during a measurement time period;
- and
- determining a gating signal chart based on the image data and the motion signal chart, the gating signal chart representing one or more treatment intervals.
A method for determining one or more treatment intervals a planning phase of a treatment, comprising:
- recording image data representative of internal tissue targeted for irradiation;
- generating motion data representative of physiological movement of a patient;
- synchronously displaying the image data with a motion signal chart, the motion signal chart presenting a representation of the generated motion data and representing physiological movement during a measurement time period;
- and
- determining a gating signal chart based on the image data and the motion signal chart, the gating signal chart representing one or more treatment intervals.
Dependencies are inferred from the claim text.