Relative calibration for dosimetric devices
AssigneeRadiological Imaging Technology, Inc.
InventorsDaniel M. Ritt, Matthew L. Whitaker, Arthur J. Olch
Life of this patent
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Abstract
Calibrating the dose response of an image acquisition device comprises comparing a first self-calibration curve to a second self-calibration curve to determine the relationship between the curves; modifying an acquired image based on the at least one difference; and applying an initial calibration to the acquired image, whereby the dose response of the image acquisition device is calibrated.
Claims24
A system for calibrating a dose response of an image acquisition device, comprising:
- one or more treatment planning systems configurable to output a first dose map and at least one subsequent dose map, each dose map indicating dosages that are included in a corresponding treatment plan;
- one or more image acquisition devices configurable to output a first acquired image and at least one subsequent acquired image, the first acquired image corresponding to the first dose map, each subsequent acquired image corresponding to one of the subsequent dose maps, each acquired image including representations of dosage intensities recorded from an application of the corresponding treatment plan;
- means for creating a first self-calibration curve that relates the dosages of the first dose map to the dosage intensities of the first acquired image;
- and
- means for creating at least one subsequent self-calibration curve that relates the dosages of the at least one subsequent dose map to the dosage intensities of the at least one subsequent acquired image.
A method for calibrating a dose response of an image acquisition device, comprising:
- receiving a first dose map and at least one subsequent dose map from one or more treatment planning systems, each dose map indicating dosages that are included in a corresponding treatment plan;
- receiving a first acquired image and at least one subsequent acquired image from one or more image acquisition devices, the first acquired image corresponding to the first dose map, each subsequent acquired image corresponding to one of the subsequent dose maps, each acquired image including representations of dosage intensities recorded from an application of the corresponding treatment plan;
- creating a first self-calibration curve that relates the dosages of the first dose map to the dosage intensities of the first acquired image;
- and
- creating at least one subsequent self-calibration curve that relates the dosages of the at least one subsequent dose map to the dosage intensities of the at least one subsequent acquired image.
A computer-readable medium tangibly embodying computer readable instructions for:
- receiving a first dose map and at least one subsequent dose map from one or more treatment planning systems, each dose map indicating dosages that are included in a corresponding treatment plan;
- receiving a first acquired image and at least one subsequent acquired image from one or more image acquisition devices, the first acquired image corresponding to the first dose map, each subsequent acquired image corresponding to one of the subsequent dose maps, each acquired image including representations of dosage intensities recorded from an application of the corresponding treatment plan;
- creating a first self-calibration curve that relates the dosages of the first dose map to the dosage intensities of the first acquired image;
- and
- creating at least one subsequent self-calibration curve that relates the dosages of the at least one subsequent dose map to the dosage intensities of the at least one subsequent acquired image.
Dependencies are inferred from the claim text.