Method for modification of radiotherapy treatment delivery
AssigneeTomotherapy Incorporated
InventorsKenneth J. Ruchala, Gustavo H. Olivera, Jeffrey M. Kapatoes, Paul J. Reckwerdt, Weiguo Lu, John H. Hughes
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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.
Claims30
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.
A method of delivering radiation therapy, the method comprising:
- 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.
A method of delivering radiation therapy, the method comprising:
- 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.
Dependencies are inferred from the claim text.