Apparatus and method for compensating for respiratory and patient motion during treatment
First Claim
1. A method of compensating for motions of a patient during treatment, the method comprising:
- generating pre-operative three-dimensional images of an internal region showing an internal fiducial and a target region located in the internal region;
acquiring an ultrasound image of the internal region, the ultrasound image showing the internal fiducial;
matching the internal fiducial in the ultrasound image with the internal fiducial in one of the pre-operative three-dimensional images to determine a position of the target region;
simultaneously detecting a location of an external marker coupled to the patient to indicate an external movement of the patient and acquiring a corresponding ultrasound image of the internal region during treatment; and
generating a correlation between the external movement and the position of the target region so that the position of the target region is inferred from the location of the external marker.
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Abstract
An apparatus and method for performing treatment on an internal target region while compensating for breathing and other motion of the patient is provided in which the apparatus comprises a first imaging device for periodically generating positional data about the internal target region and a second imaging device for continuously generating positional data about one or more external markers attached to the patient'"'"'s body or any external sensor such as a device for measuring air flow. The apparatus further comprises a processor that receives the positional data about the internal target region and the external markers in order to generate a correspondence between the position of the internal target region and the external markers and a treatment device that directs the treatment towards the position of the target region of the patient based on the positional data of the external markers.
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Citations
33 Claims
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1. A method of compensating for motions of a patient during treatment, the method comprising:
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generating pre-operative three-dimensional images of an internal region showing an internal fiducial and a target region located in the internal region; acquiring an ultrasound image of the internal region, the ultrasound image showing the internal fiducial; matching the internal fiducial in the ultrasound image with the internal fiducial in one of the pre-operative three-dimensional images to determine a position of the target region; simultaneously detecting a location of an external marker coupled to the patient to indicate an external movement of the patient and acquiring a corresponding ultrasound image of the internal region during treatment; and generating a correlation between the external movement and the position of the target region so that the position of the target region is inferred from the location of the external marker. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An apparatus for compensating for a motion of an internal target region in a patient during treatment, the apparatus comprising:
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a beaming apparatus to generate a treatment beam; an ultrasound imaging device for periodically generating internal positional data about the internal target region during treatment; and a processor to receive the internal positional data and external positional data to generate a correlation between a position of the internal target region as determined from the internal positional data and an external marker, wherein the processor is configured to generate a control signal to move the beaming apparatus to direct the treatment beam toward the target region based on the external positional data. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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33. A method for compensating for motions of a patient during treatment, the method comprising:
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generating images of a target region prior to the treatment; periodically generating ultrasound images indicating positional data about the target region during the treatment; and moving a linear accelerator to direct a treatment beam at a position of the target region based on the ultrasound images periodically generated during the treatment.
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Specification