X-Ray Image Dose Regulation With Adaptive Pixel Grouping
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Solution Overview
Problem
Existing image recording technologies face challenges in achieving optimal image quality for diverse patient types and examination conditions, particularly in serial DFR recordings, due to limitations in radiation dose and noise levels, which are exacerbated by patient thickness and irradiation time constraints.
Innovation Solution
A method and device for regulating the image recording process by determining irradiation values and adjusting pixel grouping to optimize dose reception, combining pixels into groups for improved noise reduction and image quality, while maintaining resolution and contrast.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the radiation dose is increased to improve image quality, then image quality improves, but the patient receives higher radiation exposure and thermal load on the emitter increases
Solution Approach 1:
The patent dynamically adjusts multiple radiation parameters including acceleration voltage (kV), current (mA), and pulse duration based on real-time feedback from the detector. By changing these parameters adaptively rather than using fixed high doses, the system optimizes image quality while minimizing total radiation exposure to the patient.
Solution Approach 2:
The system incorporates feedback from the pixel detector to continuously monitor image quality and adjust radiation parameters in real-time. This closed-loop control allows the system to maintain optimal image quality while reducing unnecessary radiation dose by adjusting parameters based on actual detection performance.
2Use of energy by moving object
If the acceleration voltage is increased to double X-ray energy, then X-ray energy increases, but images become harder and lose detail contrast
Solution Approach 1:
Instead of using high acceleration voltage alone, the patent employs a combination of parameters including optimized kV, current, and pulse duration. This multi-parameter approach allows sufficient X-ray energy to penetrate the patient while maintaining detail contrast by avoiding excessive kV that would harden the image.
Solution Approach 2:
The system dynamically adjusts acceleration voltage and other parameters during the imaging process rather than using static high voltage. This dynamic adjustment allows the system to optimize the balance between penetrating power and detail contrast based on real-time feedback and patient-specific conditions.
3Quantity of substance
If the pulse duration is increased to improve dose reception, then dose increases, but the image frequency and readout time are compromised
Solution Approach 1:
The patent optimizes pulse duration as one of multiple parameters, adjusting it in conjunction with acceleration voltage and current. By coordinating these parameters, the system achieves sufficient dose reception without excessively long pulse durations that would limit image frequency or compromise readout time performance.
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
Enhances image quality by reducing noise and maintaining contrast, allowing for better image recording in adipose patients and various examination scenarios without compromising detail sharpness.
Implementation Method 1
exposing the object to radiation from the radiation source
Implementation Method 2
recording an image using the pixel detector
Data Source
AI summary
One or more example embodiments relates to a method for regulating a dose when recording images of an object via an image recording device having a radiation source and a pixel detector. One or more example embodiments further comprises a device, a control entity and an image recording system.