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US 6,487,438 B1Granted
Arrangement and reference means to direct a beam in radiation therapy
AssigneeBeampoint AB
InventorsAnders Widmark, Per Bergstrom, Per-Olov Loforth
Life of this patent
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AssigneeBeampoint AB
InventorsAnders Widmark, Per Bergstrom, Per-Olov Loforth
Estimating the term…
Apparatus and method for the precision aiming of a radiation beam for treating an internal cancer tumor in a patient. The method of treatment includes introducing at least one reference marker into the patient in a defined and locatable position in relation to the cancer tumor. A defined point in the cross section of the beam is located by a sight that is compared to the position of the reference marker and adjusted to ensure that the treatment beam is directed precisely at the cancer tumor before the remaining doses of radiation are given to the patient. The device according to the invention includes equipment for emitting a treatment beam, a sight arranged in the path of the beam to define a point in the cross section of the beam, and a device to read the beam arranged to receive the beam that has passed through the patient and visualize the position of the at least one said reference marker and the position of the sight.
Arrangement for the precision aiming of a treatment beam against an internal cancer tumor in a patient into which at least one reference marker has been introduced and in relation to which the position of the cancer tumor is defined, the arrangement including treatment equipment for emitting a treatment beam with a defined cross-section, a patient support device for supporting the patient, a sight arranged in the path of the beam at a point in the cross-section thereof, and a reading device to read the beam, said reading device arranged to receive the beam that has passed through the patient for visualizing the position of the at least one reference marker and the position of the sight, whereby the position of the beam in relation to the cancer tumor can be determined.
Reference device according to claim wherein 7, the reference device includes a catheter having the position fixing-device at its free end, the position fixing-device comprises an inflatable balloon, and at least one reference marker is arranged at a defined position along the catheter.
A method for aiming a treatment beam against an internal cancer tumor in a patient comprising:
Dependencies are inferred from the claim text.