X-Ray Focus Control During Tube Voltage Switching
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Solution Overview
Problem
The switching of tube voltage between high and low voltage in X-ray systems causes changes in the focus size, leading to reduced contrast and resolution in generated images.
Innovation Solution
A system that adjusts the focusing parameter of the radiation device in real-time based on feedback or reference values of the tube voltage to maintain a consistent focus size, using electric or magnetic fields to shape the focus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If tube voltage is switched between high and low voltage for energy imaging, then energy imaging capability is improved, but focus size changes causing reduced image contrast and resolution
Solution Approach 1:
The patent applies dynamics by making the focusing parameter adjustable in real-time according to the tube voltage state. The system dynamically changes the focusing parameter to compensate for focus size variations caused by voltage switching, thereby maintaining consistent image quality across different energy imaging modes.
Solution Approach 2:
The patent changes the focusing parameter (such as focusing voltage or current) in response to tube voltage changes. By adjusting this parameter, the system compensates for the focus size variations that occur during voltage switching, thus maintaining image resolution while enabling energy imaging capability.
2Adaptability or versatility
If tube voltage is switched between high and low voltage for energy imaging, then energy imaging capability is improved, but image contrast is reduced
Solution Approach 1:
The system dynamically adjusts the focusing parameter based on the real-time tube voltage state to maintain consistent focus size. This dynamic compensation ensures that image contrast remains stable during voltage switching, while still enabling the system to perform energy imaging acquisitions.
Solution Approach 2:
The patent implements feedback control by monitoring the tube voltage state and using this information to adjust the focusing parameter. This closed-loop approach ensures that focus size variations are compensated in real-time, maintaining image contrast quality throughout the energy imaging process.
3Manufacturing precision
If focusing parameter is adjusted in real-time to maintain focus size, then image quality is improved, but device complexity increases
Solution Approach 1:
The patent changes a single focusing parameter (voltage or current) in response to tube voltage changes. This approach maintains image resolution without requiring complex mechanical adjustments or additional hardware components, thereby limiting the increase in device complexity to simple electrical parameter control.
Solution Approach 2:
The patent replaces potential mechanical focusing adjustment mechanisms with electrical parameter control. By using electrical signals to adjust the focusing parameter, the system achieves precise focus control without the complexity of mechanical moving parts, thereby improving image quality while minimizing device complexity increases.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Maintains focus size within operational constraints, improving image quality by ensuring consistent contrast and resolution during tube voltage switching.
Implementation Method 1
the focusing device may be configured to shape the focus of the radiation rays by generating an electric field under a focusing voltage
Implementation Method 2
the focusing device may be configured to shape the focus of the radiation rays by generating a magnetic field under a focusing current
Data Source
AI summary
A method may include obtaining a feedback or a reference value of a tube voltage applied to a radiation source of a radiation device for generating radiation rays. The method may also include determining, based on the feedback or the reference value of the tube voltage, a specific value of a focusing parameter associated with a focusing device of the radiation device. The method may further include causing the focusing device to shape a focus of the radiation rays according to the determined value of the focusing parameter. The focus of the radiation rays may satisfy an operational constraint under the specific value of the focusing parameter.