Radiation detector and radiotherapy apparatus
First Claim
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1. A radiation detector for use in a system having a source of radiation, the source of radiation generating a beam of radiation along a beam axis for intersecting with a patient or part of a patient, the radiation detector comprising:
- a hollow tube in which the patient or the part of the patient can be positioned, the hollow tube having a primary axis which, in use, lies transverse to the beam axis; and
a plurality of optical fibres distributed over the surface of the hollow tube for detecting the radiation beam.
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Abstract
The present invention provides a radiation detector which comprises a tube and detector elements distributed over the tube. Such an arrangement can be used to provide information on a radiation beam prior to interaction with a patient and after interaction with the patient. The detector is particularly compact and therefore suited to use with apparatus where space is restricted. By a particular arrangement of detectors and optical fibers, the detector can provide data at all angles of rotation.
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Citations
15 Claims
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1. A radiation detector for use in a system having a source of radiation, the source of radiation generating a beam of radiation along a beam axis for intersecting with a patient or part of a patient, the radiation detector comprising:
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a hollow tube in which the patient or the part of the patient can be positioned, the hollow tube having a primary axis which, in use, lies transverse to the beam axis; and a plurality of optical fibres distributed over the surface of the hollow tube for detecting the radiation beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An apparatus, comprising:
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a source of radiation, for generated a radiation beam along a beam axis; a patient support, for supporting a patient; and a radiation detector comprising; a hollow tube in which the patient support can be arranged, the hollow cylinder having a primary axis which, in use, lies transverse to the beam axis; and a plurality of optic fibers distributed over the surface of the hollow tube for detecting the radiation beam.
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Specification