Method for modification of radiotherapy treatment delivery
First Claim
Patent Images
1. A method for achieving a desired dose distribution comprising:
- obtaining at least one treatment planning image from a patient to determine the relative location of target and sensitive structures;
preparing a treatment plan for the patient based on the at least one treatment planning image, the treatment plan including a planned dose distribution;
obtaining at least one three-dimensional image from the patient in substantially a treatment position, the three-dimensional image including anatomical data and being used for volumetric dose calculations;
comparing the at least one treatment planning image and the at least one three-dimensional image; and
adjusting how the dose is received by the patient based on the comparison.
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Abstract
A method of contoured-anatomy dose repositioning (CADR) as a means to automatically reposition a patient to better recover the planned dose distribution without reoptimizinq the treatment plan. CADR utilizes planning CT images, the planned dose distribution, and on-line images for repositioning dose distribution on a given day. Contours are also placed upon the images using manual, automatic, template-based, or other techniques. CADR then optimizes the rigid-body repositioning of the patient so that the daily dose distribution closely matches the planned dose distribution.
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Citations
30 Claims
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1. A method for achieving a desired dose distribution comprising:
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obtaining at least one treatment planning image from a patient to determine the relative location of target and sensitive structures; preparing a treatment plan for the patient based on the at least one treatment planning image, the treatment plan including a planned dose distribution; obtaining at least one three-dimensional image from the patient in substantially a treatment position, the three-dimensional image including anatomical data and being used for volumetric dose calculations; comparing the at least one treatment planning image and the at least one three-dimensional image; and adjusting how the dose is received by the patient based on the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of delivering radiation therapy, the method comprising:
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acquiring a first image of a region of interest in a patient; generating a plurality of radiation treatment plans for the patient based on the first image; acquiring a second image of the region of interest while the patient is in substantially a treatment position, the second image being at least three-dimensional and including anatomical data; and selecting one of the radiation treatment plans based at least in part on dosimetric information from the second image. - View Dependent Claims (19, 20, 21, 22)
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23. A method of delivering radiation therapy, the method comprising:
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acquiring a first image of a patient; generating a radiation treatment plan for the patient, the radiation treatment plan based on the first image; acquiring a second image of the patient substantially in a treatment position, the second image being three-dimensional and suitable for three-dimensional contouring; generating a contour on the second image; and identifying a patient position with respect to a radiation delivery device based on dosimetric information and the contour. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30)
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Specification