X-ray CT apparatus and method
AssigneeCanon Medical Systems Corporation
InventorHiroaki Miyazaki
Life of this patent
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Abstract
An X-ray CT apparatus according to an embodiment includes a photon counting detector that outputs a signal that enables measurement of an energy value of an X-ray photon incident thereon, and processing circuitry configured to determine a time to make a transition from a prescan to a main scan by estimating, from projection data, an amount of a contrast agent present on an X-ray path including a monitored region set for a subject in the prescan, the projection data having been generated by detection of X-rays by the photon counting detector, the X-rays having been transmitted through the monitored region.
Claims12
An X-ray CT apparatus, comprising:
- a photon counting detector configured to output a signal that enables measurement of an energy value of an X-ray photon incident on the photon counting detector;
- and
- processing circuitry configured to determine a time to make a transition from a prescan to a main scan by estimating, from projection data, an amount of a contrast agent present on an X-ray path including a monitored region set for a subject in the prescan, the projection data having been generated by detection of X-rays by the photon counting detector, the X-rays having been transmitted through the monitored region.
A method, including:
- determining a time to make a transition from a prescan to a main scan by estimating, from projection data, an amount of a contrast agent present on an X-ray path including a monitored region set for a subject in the prescan, the projection data having been generated by detection of X-rays by a photon counting detector, the X-rays having been transmitted through the monitored region.
Dependencies are inferred from the claim text.