Radiography System Configuration Using Focal Spot Measurement
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Solution Overview
Problem
Conventional radiography systems face issues with imprecise setting of parameters leading to higher than desired unsharpness and longer process times due to variations in focal spot size and detector degradation, which affect spatial resolution and geometric magnification.
Innovation Solution
Systems and methods that measure the actual focal spot size to determine and guide selection of radiography parameters, optimizing unsharpness and imaging time by adjusting emitter wattage and geometric magnification to meet a predetermined threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional radiography systems use fixed parameter settings, then operation is simple, but unsharpness increases and image quality deteriorates
Solution Approach 1:
The system performs preliminary measurement of the focal spot size before the actual radiography process. This preliminary action allows the system to determine the actual focal spot dimensions and use this information to calculate optimal imaging parameters, thereby ensuring high image quality without requiring complex manual parameter adjustment during operation.
Solution Approach 2:
The radiography system automatically measures its own focal spot size and self-adjusts the imaging parameters based on the measured values. The system serves itself by performing self-diagnosis and self-configuration, eliminating the need for complex manual parameter setting while maintaining optimal image quality through adaptive parameter selection.
2Manufacturing precision
If radiography parameters are adjusted to reduce unsharpness, then image quality improves, but process time increases
Solution Approach 1:
The system dynamically adjusts radiography parameters based on the measured focal spot size. Rather than using fixed conservative parameters that would ensure quality but increase time, the system calculates the optimal parameters in real-time according to the actual focal spot dimensions, achieving the right balance between spatial resolution and imaging speed.
Solution Approach 2:
The system changes imaging parameters (such as magnification, exposure settings) based on the measured focal spot size. By adapting parameters to the actual focal spot characteristics rather than using fixed settings, the system achieves optimal spatial resolution without unnecessarily increasing process time.
3Adaptability or versatility
If focal spot size varies, then system adaptability is improved, but measurement precision deteriorates
Solution Approach 1:
The system performs preliminary measurement of the focal spot size to determine the actual dimensions before conducting the radiography process. This preliminary measurement allows the system to adapt to the specific focal spot characteristics of the emitter, ensuring that subsequent measurements and imaging maintain the required precision despite variations in focal spot size.
Solution Approach 2:
The system uses the measured focal spot size as feedback to adjust imaging parameters. By continuously monitoring the actual focal spot dimensions and using this information to configure the radiography settings, the system maintains measurement precision while being adaptable to different focal spot conditions.
4Productivity
If emitter wattage is increased to improve imaging speed, then productivity increases, but unsharpness increases due to focal spot growth
Solution Approach 1:
The system dynamically determines the appropriate emitter wattage based on the measured focal spot size. Rather than using fixed high wattage settings that would speed up imaging but increase focal spot size and unsharpness, the system adapts the power parameters to the actual focal spot characteristics, achieving optimal imaging speed while maintaining image quality.
Solution Approach 2:
The system changes the emitter power parameters based on the measured focal spot size and the desired imaging requirements. By adjusting wattage, voltage, and current settings according to the actual focal spot dimensions, the system optimizes the balance between imaging speed and image quality, avoiding excessive unsharpness while maintaining high productivity.
Data Source
AI summary
An example method to configure a radiography system having a radiation emitter and a radiation detector involves: analyzing, using processing circuitry, a reference image captured using a first value of a first power parameter for the radiation emitter to determine a value of a focal spot size for the radiation emitter; based on a determined relationship between the first value of the first power parameter and the value of the focal spot size, output an indication of whether a selected value of the first power parameter results in a value of an unsharpness parameter satisfying a threshold unsharpness value; and control the radiography system using the selected power parameter to perform a radiography process to obtain one or more radiographic images that satisfy the threshold unsharpness value.