Fujifilm Healthcare Corporation

Shinichi Kojima

Isao Takahashi

Kazuma Yokoi

Fumito Watanabe

Taiga Gotou

Fuyuhiko Teramoto

A material decomposition apparatus for performing decomposition of a material in an object. The apparatus includes a data storage section for storing correction data preliminarily generated by decomposing one of three or more materials into the other two materials, a data input section to which radiation data of the object is inputted, the radiation data being divided into a plurality of energy levels, and a decomposition processing section for repeatedly performing two-material decomposition for decomposition of the other two materials of the three or more materials using the radiation data at different energy levels and the correction data to perform decomposition of the inside of the object into the three or more materials.

Material decomposition apparatus, PCCT apparatus, and material decomposition method

A photon counting computed tomography (CT) apparatus actually measures corrective measurement values by radiating X-rays from an X-ray tube and counting X-ray photons in each of a plurality of energy bands in a vacant state in which no subject is arranged in an imaging range of the photon counting CT apparatus and/or in a state in which one or more types of corrective materials are arranged at a position through which X-rays radiated from the X-ray tube pass, and corrects measurement values in a material decomposition map based on the actually measured corrective measurement values.

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Chiba, Japan

Shinichi Kojima