Non-collocated imaging and treatment in image-guided radiation treatment systems
First Claim
Patent Images
1. A method, comprising:
- imaging a volume of interest (VOI) with an imaging system and acquiring positional data of a target within the VOI, wherein the positional data comprises a present position of the target relative to an imaging center of the imaging system, wherein the imaging center has a first location in a treatment room coordinate system;
moving the VOI with a positioning system, to align the target in a radiation system that is separated from the imaging system, wherein the radiation system has a second location in the treatment room coordinate system different from the first location;
treating the target at the second location with the radiation system;
detecting movement of the (VOI) in the radiation system;
returning the (VOI) from the radiation system back to the imaging system if the detected movement exceeds a movement threshold; and
re-imaging the (VOI) with the imaging system to acquire updated positional data of the target within the (VOI).
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Abstract
An image-guided radiation treatment system includes a robotic positioning system and a tracking system that enables a radiation target to be imaged and aligned at one location and treated at another location by transferring positional data from the imaging system to the positioning system and the radiation treatment system.
113 Citations
52 Claims
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1. A method, comprising:
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imaging a volume of interest (VOI) with an imaging system and acquiring positional data of a target within the VOI, wherein the positional data comprises a present position of the target relative to an imaging center of the imaging system, wherein the imaging center has a first location in a treatment room coordinate system; moving the VOI with a positioning system, to align the target in a radiation system that is separated from the imaging system, wherein the radiation system has a second location in the treatment room coordinate system different from the first location; treating the target at the second location with the radiation system; detecting movement of the (VOI) in the radiation system; returning the (VOI) from the radiation system back to the imaging system if the detected movement exceeds a movement threshold; and re-imaging the (VOI) with the imaging system to acquire updated positional data of the target within the (VOI). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A system, comprising:
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an imaging system configured to image a volume of interest (VOI) to acquire positional data of a target within the VOI, wherein the positional data comprises a present position of the target relative to a reference position of the target at an imaging center of the imaging system, and wherein the imaging center has a first location in a treatment room coordinate system; a radiation system that is separated from the imaging system, the radiation system configured to apply a radiation treatment beam to the target, wherein radiation system has a second location in the treatment room coordinate system different from the first location; a positioning system configured to move the VOI from the imaging system to the radiation system to align the target in the radiation system; and a tracking system configured to detect movement of the VOI in the radiation system; wherein the positioning system is configured to return the VOI from the radiation system back to the imaging system if the tracking system detects movement of the VOI that exceeds a movement threshold, and wherein the imaging system is configured to re-image the VOI to acquire updated positional data of the target within the VOI in response to the return. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A system, comprising:
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an imaging system configured to image a volume of interest (VOI) to acquire positional data of a target within the VOI, wherein the positional data comprises a present position of the target relative to a reference position of the target at an imaging center of the imaging system, wherein to acquire the positional data, the imaging system is configured to determine a first transformation between the present position of the target in the imaging system and the reference position of the target at the imaging center of the imaging system, the imaging center having a first location in a treatment room coordinate system; a radiation system including a portal imaging device, wherein the radiation system is configured to apply a radiation treatment beam to the target and to capture electronic portal images of the VOI; and a positioning system configured to apply the first transformation to the VOI to align the target with the reference position of the target at the imaging center of the imaging system and to move the VOI from the imaging system to the radiation system to align the target in the radiation system, wherein the radiation system has a second location in the treatment room coordinate system different from the first location. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48)
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49. An apparatus, comprising:
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means for imaging a radiation target at a first location in an imaging system; means for treating the radiation target in a radiation system that is separated from the imaging system at a second location that is different from the first location, wherein the second location is different from the first location to prevent interference between the imaging and the treating; means for moving the radiation target from the first location to the second location after the imaging; means for detecting movement of the radiation target during the treating; and means for returning the radiation target back to the first location if the movement of the radiation target exceeds a movement threshold. - View Dependent Claims (50, 51, 52)
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Specification