Configurable AEC Sensor Positioning for Radiographic Imaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional Automatic Exposure Control (AEC) systems in X-ray imaging face challenges in accurately positioning sensor elements relative to the subject and detector, leading to suboptimal exposure control due to fixed sensor patterns that do not adapt to varying patient sizes and tissue types.
Innovation Solution
A method and apparatus that allow for the configurable positioning of radiation energy sensor elements in a two-dimensional array, enabling the creation of composite radiation measurement regions that can be selectively positioned and sized based on the subject's anatomy, using a controller circuit to adjust sensor element positions and sizes for precise exposure control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional fixed-position AEC sensor elements are used, then the device complexity is reduced, but the adaptability to varying patient sizes and tissue types deteriorates
Solution Approach 1:
The patent implements dynamic positioning of AEC sensor elements through a movable mounting mechanism that allows the sensor array to be repositioned relative to the detector. This dynamic adjustment capability enables adaptation to different patient sizes and tissue types while maintaining a relatively simple overall device structure, resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The sensor elements are divided into multiple independently positionable units within a two-dimensional array. Each sensor element or group of elements can be individually positioned to optimize detection for specific anatomical regions, providing adaptability without requiring complete redesign of the entire AEC system.
2Measurement precision
If sensor elements are positioned to detect radiation from specific anatomical regions, then the measurement precision for those regions is improved, but the ease of operation deteriorates due to positioning requirements
Solution Approach 1:
The system incorporates automated detection and positioning mechanisms that enable the sensor elements to self-align with the detector and anatomical regions of interest. This automation maintains high measurement precision while significantly reducing the manual positioning effort required from operators.
Solution Approach 2:
The patent implements feedback mechanisms where the system monitors and adjusts sensor element positions based on detected radiation patterns and anatomical markers. This continuous feedback loop ensures optimal measurement precision while simplifying operation, as the system automatically compensates for positioning variations.
3Measurement precision
If a two-dimensional array of configurable sensor elements is used, then the adaptability and measurement precision are improved, but the device complexity increases
Solution Approach 1:
The two-dimensional array of sensor elements serves multiple functions: it provides precise radiation detection, enables flexible positioning for different anatomical regions, and supports various imaging modalities. This multi-functionality justifies the increased complexity by delivering versatile performance across multiple applications simultaneously.
Solution Approach 2:
The patent combines multiple sensor elements into a unified two-dimensional array that operates as an integrated system. By merging individual sensor capabilities into a coordinated array, the system achieves enhanced measurement precision while managing complexity through unified control and processing architecture.
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
This approach enables more accurate and flexible exposure control, ensuring appropriate radiation levels are applied during imaging, improving the quality of radiographic images by adapting to individual patient parameters and tissue types.
Implementation Method 1
sensor elements 22 that respond to incident radiation by generating a signal that indicates the amount of radiation received
Data Source
AI summary
A method for indicating a position of a radiation energy sensor element in a radiographic imaging system, the method executed at least in part by a computer, identifies the position of the radiation energy sensor element relative to a subject to be imaged and displays the identified position relative to the subject.