Modular Quality Control Phantom for Radiologic Imaging Testing
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Solution Overview
Problem
Current imaging systems for CT and CBCT quality control lack efficient and cost-effective methods for testing and evaluating image quality, as existing phantoms are complex and time-consuming to set up.
Innovation Solution
A quality control phantom apparatus comprising a container with a fill material and a frame that secures variously shaped QC accessories in fixed positions, allowing for easier and faster radiological imaging equipment testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional imaging phantoms are used for quality control testing, then comprehensive image quality evaluation can be achieved, but the setup process becomes complex and time-consuming
Solution Approach 1:
The phantom is divided into separate modular components including a container, fill material, and multiple detachable objects with different shapes and materials. These modular segments can be independently selected and assembled based on specific testing requirements, reducing overall complexity while maintaining comprehensive evaluation capability
Solution Approach 2:
The phantom container and fill material serve multiple functions: they provide a standardized base structure, accommodate various types of QC objects, and enable different imaging parameters to be tested using the same basic setup. This multi-functionality reduces the need for multiple separate phantoms
2Measurement precision
If traditional imaging phantoms are used for quality control testing, then comprehensive image quality evaluation can be achieved, but the testing setup becomes time-consuming
Solution Approach 1:
The phantom objects are pre-manufactured with specific shapes, materials, and dimensions required for quality control testing. The container and fill material are prepared in advance as standardized components. This preliminary preparation eliminates the need for complex assembly during testing, significantly reducing setup time while maintaining evaluation comprehensiveness
Solution Approach 2:
The segmented modular design allows testers to quickly assemble only the specific components needed for each testing scenario, rather than configuring a complete complex phantom every time. This selective assembly reduces setup time proportionally to the complexity reduction
3Reliability
If traditional imaging phantoms are used for quality control testing, then adequate testing coverage can be achieved, but the cost of testing increases
Solution Approach 1:
The modular object design allows individual components to be manufactured separately using cost-effective methods and materials. Each object can be optimized for its specific function (e.g., contrast agents, geometric shapes) without requiring expensive integration, reducing overall manufacturing cost while maintaining comprehensive testing coverage
Solution Approach 2:
The phantom objects are designed to be simple, replaceable components that can be manufactured at low cost. If an object becomes damaged or contaminated, it can be replaced with a new inexpensive component rather than requiring replacement of the entire phantom system, maintaining reliability while reducing costs
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
The phantom apparatus simplifies and accelerates the testing process for radiological imaging systems by providing a cost-effective setup for evaluating image quality metrics such as modulation transfer function, contrast scale, and geometric calibration.
Implementation Method 1
a phantom may be used to evaluate an imaging device, such as a CT or a CBCT imaging system, by comparing captured images of the phantom with the phantom itself or with expected results
Data Source
AI summary
A quality control phantom comprises a container and a frame to secure quality control accessories in position within the container during radiologic exposure testing.