General purpose, wide energy range calibration source for medical emission tomography
AssigneeSiemens Medical Solutions USA, Inc.
InventorsAlexander Hans Vija, Miesher Rodrigues
Life of this patent
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Abstract
For calibration in medical emission tomography, the dosimeter and/or detector is calibrated in the field, such as at the clinic or other patient scanning location. To allow for a fewer number of calibration sources used in calibrating and/or assist in calibration for multispectral emission tomography, a calibration source includes multiple isotopes and/or a proxy source or isotope is used instead of the same isotope used in factory calibration.
Claims9
A calibration source for medical emission tomography, the calibration source comprising:
- an epoxy pellet comprising a mix of cured epoxy and an active element with at least two different radioisotopes, wherein at least one radioisotope of the at least two different radioisotopes is used for factory calibration and wherein at least one radioisotope of the at least two different radioisotopes is a proxy source that is not used for factory calibration;
- and
- a housing enclosing the epoxy pellet.
A calibration source for medical emission tomography, the calibration source comprising:
- a first pellet comprising a mix of cured epoxy and a first active element of a first radioisotope, wherein the first radioisotope is an isotope used for factory calibration;
- a second pellet comprising a mix of cured epoxy and a second active element of a second radioisotope different than the first radioisotope, wherein the second radioisotope is a proxy source that is not used for factory calibration;
- and
- a housing enclosing the first and second pellets, wherein the first pellet is stacked directly adjacent the second pellet within the housing.
Dependencies are inferred from the claim text.