Dosimeter based on a gas electron multiplier for dose measurements of therapeutic radiation
OwnerIn Hwan Yeoinventor
Life of this patent
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Abstract
A dosimeter based on a gas electron multiplier and method of use thereof for measurement of doses of therapeutic radiation to which a tissue-phantom is exposed. Subsequent to the in-phantom measurement and verification of radiation beam delivery, radiation can be effectively delivered to a human target organ, based on the verification of radiation quantities to which the phantom was exposed. Use of a gas electron multiplier-based dosimeter facilitates precise and accurate verification of the radiation dose within a phantom by taking measurements in real time, with no need for subsequent film processing.
Claims27
A dosimeter comprising:
- a gas electron multiplier and an alternative aperture/grid structure, wherein said gas electron multiplier is utilized as a detector.
The dosimeter of claim l, wherein apertures in said aperture/grid structure are filled with tissue-equivalent gas.
The dosimeter of claim l, wherein said aperture/grid structure comprises polystyrene cross-linked with divinylbenzene.
A method of measurement of radiation doses, said method comprising the steps of:
- utilizing a dosimeter comprising a gas electron multiplier for dosimetry of therapeutic radiation and ionizing radiation, wherein said gas electron multiplier is utilized as a detector;
- and
- generating dosimetric signals utilizing energy absorption from ionizing radiation in a gas disposed above said gas electron multiplier and within apertures of an alternative aperture/grid structure disposed above said gas electron multiplier.
A method of reading of radiation pattern and intensity, said method comprising the steps of:
- utilizing a gas electron multiplier-based dosimeter for reading therapeutic radiation position (multileaf collimator position) and intensity;
- and
- preventing crosstalk of radiation utilizing an alternative aperture/grid structure.
Dependencies are inferred from the claim text.