Photon counting apparatus
AssigneesKabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
InventorEmi TAMURA
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Abstract
According to on embodiment, The X-ray tube generates X-rays. The X-ray detector detects the X-rays transmitted through a subject. The data acquisition circuitry acquires count data concerning a count number of the detected X-rays for energy bands. The memory circuitry stores data of a response function that associates incident X-rays on the X-ray detector with a response characteristic of a system including the X-ray detector and the data acquisition circuitry. The processing circuitry calculates an X-ray absorption amount of each of a plurality of base substances based on the count data concerning the energy bands acquired by the data acquisition circuitry, an energy spectrum of the incident X-rays, and the response function.
Claims17
A photon counting apparatus comprising:
- an X-ray tube configured to generate X-rays;
- an X-ray detector configured to detect the X-rays generated by the X-ray tube and transmitted through a subject;
- a data acquisition circuitry configured to acquire count data concerning a count number of the detected X-rays for a plurality of energy bands based on an output signal from the X-ray detector;
- a memory circuitry configured to store data of a response function that associates incident X-rays on the X-ray detector with a response characteristic of a system including the X-ray detector and the data acquisition circuitry;
- and
- a processing circuitry configured to calculate an X-ray absorption amount of each of a plurality of base substances based on the count data concerning the plurality of energy bands acquired by the data acquisition circuitry, an energy spectrum of the incident X-rays generated by the X-ray tube, and the response function readout from the memory circuitry.
Dependencies are inferred from the claim text.