X-ray CT apparatus, X-ray high voltage apparatus, and X-ray control method
AssigneeCanon Medical Systems Corporation
InventorYu Sasaki
Life of this patent
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Abstract
According to one embodiment, an X-ray CT apparatus includes processing circuitry. The processing circuitry is configured to acquire set tube current waveform, and specify, based on the set tube current waveform, a period of a first tube current and a period of a second tube current lower than the first tube current. The processing circuitry is further configured to determine a waveform of a grid voltage such that a first grid voltage is applied during a period corresponding to the period of the first tube current and a second grid voltage, which is higher than the first grid voltage, is applied during a period corresponding to the period of the second tube current.
Claims7
An X-ray CT apparatus, comprising:
- processing circuitry configured to:
- acquire a set tube current waveform;
- specify, based on the set tube current waveform, a period of a first tube current and a period of a second tube current, which is lower than the first tube current;
- and
- determine a waveform of a grid voltage such that a first grid voltage is applied during a period corresponding to the period of the first tube current and a second grid voltage, which is higher than the first grid voltage, is applied during a period corresponding to the period of the second tube current.
An X-ray control method, comprising:
- acquiring a set tube current waveform;
- specifying, based on the set tube current waveform, a period of a first tube current and a period of a second tube current lower than the first tube current;
- and
- determining a waveform of a grid voltage such that a first grid voltage is applied during a period corresponding to the period of the first tube current and a second grid voltage, which is higher than the first grid voltage, is applied during a period corresponding to the period of the second tube current.
Dependencies are inferred from the claim text.