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US 5,622,187 AGranted
Method and apparatus for patient positioning for radiation therapy
AssigneeNomos Corporation
InventorMark P. Carol
Life of this patent
Estimating the term…
Abstract
A method and apparatus for positioning a patient upon a treatment table of a linear accelerator includes a camera secured to the gantry of the linear accelerator and a plurality of light emitting diodes mounted with respect to the patient which are viewed by the camera.
Claims25
Apparatus for treating a patient with radiation therapy treatment of a lesion within the patient's body comprising:
- a linear accelerator, including a rotatable gantry, a treatment table, and a means for focusing a beam of radiation;
- a means for immobilizing a portion of the patient with respect to the treatment table associated with the treatment table;
- and
- a means for positioning the patient upon the treatment table, including:
- a plurality of light emitting diodes, including means for mounting the plurality of light emitting diodes with respect to the patient;
- at least one camera for viewing the plurality of light emitting diodes;
- and
- means for mounting the at least one camera to the gantry of the linear acceleration, whereby as the gantry rotates, the at least one camera rotates with the gantry and views the plurality of light emitting diodes from at least two different angular positions of the gantry with respect to the treatment table.
5 more elements
A method for positioning a patient upon a treatment table of a linear accelerator for providing radiation therapy treatment of a lesion within the patient's body, the linear accelerator having a rotatable gantry, comprising the steps of:
- providing at least one camera mounted to the gantry of the linear accelerator;
- immobilizing a portion of the patient with respect to the treatment table with a means for immobilizing associated with the treatment table;
- mounting a plurality of light emitting diodes with respect to the patient;
- disposing the gantry, with the at least one camera mounted thereto, in a first predetermined position with respect to the patient and generating a first image of the plurality of light emitting diodes with the at least one camera;
- rotating the gantry, with the at least one camera mounted thereto, to a second predetermined position with respect to the patient, and generating a second image of the plurality of light emitting diodes with the at least one camera;
- determining, from the first and second images, the location of the light emitting diodes with respect to the treatment table;
- and
- comparing the location of the light emitting diodes with respect to the treatment table, to a previously determined desired location of the light emitting diodes with respect to the treatment table, whereby if the location of the light emitting diodes with respect to the treatment table indicates the patient is not properly positioned, the patient may be moved whereby the light emitting diodes will be disposed in the desired position.
5 more elements
Dependencies are inferred from the claim text.