Systems and methods for dose modulation of x-ray scanning
AssigneeShanghai United Imaging Healthcare Co., Ltd.
InventorsFan ZHAO, Guoping ZHU, Bin CAO
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Abstract
The present disclosure provides a system and method for dose modulation of an X-ray scanning. The method may include obtaining an initial scanning dose rule for scanning a target subject; determining, based on the initial scanning dose rule, a power supply control rule of a grid in an X-ray tube of the X-ray scanning; and controlling a high-voltage generator to supply power to the grid according to the power supply control rule to control an output state of tube current of the X-ray tube.
Claims20
A system for dose modulation of an X-ray scanning, comprising:
- at least one storage device storing executable instructions;
- and
- at least one processor in communication with the at least one storage device, wherein when executing the executable instructions, the at least one processor is configured to cause the system to perform operations including:
- obtaining, for scanning a target subject, an acquisition cycle of a detector and an initial scanning dose curve;
- generating a tube current modulation carrier wave at least based on the acquisition cycle and a target tube current, the target tube current being greater than or equal to a maximum tube current in the initial scanning dose curve;
- determining, based on the tube current modulation carrier wave and the initial scanning dose curve, a power supply control rule of a grid in an X-ray tube of the X-ray scanning;
- and
- controlling a high-voltage generator to supply power to the grid according to the power supply control rule to control an output state of tube current of the X-ray tube, wherein an output value of the tube current is equal to the target tube current.
A system for power adjustment, comprising:
- at least one storage device storing executable instructions;
- and
- at least one processor in communication with the at least one storage device, wherein when executing the executable instructions, the at least one processor is configured to cause the system to perform operations including:
- obtaining a power supply control rule for controlling a high-voltage generator;
- determining a first initial switching time point for switching a high-voltage generator from a working load state to a no-load state based on the power supply control rule,
- if the high-voltage generator operates in a discontinuous current mode,
- controlling the high-voltage generator to switch from the working load state to the no-load state at a first target switching time point when a resonant inductor current in the high-voltage generator is 0;
- or
- if the high-voltage generator operates in a continuous current mode,
- controlling the high-voltage generator to switch from the working load state to the no-load state at the first initial switching time point.
A system for dose modulation of an X-ray scanning, comprising:
- at least one storage device storing executable instructions;
- and
- at least one processor in communication with the at least one storage device, wherein when executing the executable instructions, the at least one processor is configured to cause the system to perform operations including:
- obtaining an initial scanning dose rule for scanning a target subject;
- determining, based on the initial scanning dose rule, a power supply control rule of a grid in an X-ray tube of the X-ray scanning;
- and
- controlling a high-voltage generator to supply power to the grid according to the power supply control rule to control an output state of tube current of the X-ray tube.
Dependencies are inferred from the claim text.