CT Scan Parameter Policy Evaluation System
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Solution Overview
Problem
Computed tomography (CT) scans expose patients to significant radiation due to operator deviations from recommended protocols, lack of knowledge about radiation dose reduction technologies, and suboptimal selection of scan parameters, leading to variability and cumulative radiation dose issues.
Innovation Solution
A computing apparatus and method that evaluates and generates signals regarding adherence to scan parameter policies, suggesting and optimizing scan parameters to ensure compliance with radiation dose reduction policies, providing real-time feedback and guidance to operators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If CT operators use standard scan protocols without optimization, then imaging coverage and diagnostic capability are maintained, but patient radiation exposure is unnecessarily high
Solution Approach 1:
The system automatically adjusts scan parameters (kVp, mAs, pitch, slice thickness) based on patient-specific factors such as body habitus, age, and clinical indication. The processor modifies these parameters in real-time to optimize the balance between radiation dose reduction and image quality maintenance, ensuring diagnostic reliability while minimizing harmful radiation exposure.
Solution Approach 2:
The system incorporates feedback mechanisms where the processor continuously monitors scan parameters and compares them against optimized protocols. Based on this feedback, the system automatically adjusts parameters or provides alerts to operators, ensuring that radiation dose is minimized while maintaining adequate image quality for diagnostic purposes.
2Object-affected harmful factors
If CT operators manually select scan parameters without guidance, then flexibility in protocol selection is maintained, but radiation dose optimization is compromised
Solution Approach 1:
The system provides self-service functionality by automatically selecting and optimizing scan parameters based on patient characteristics and clinical indications. The processor independently determines appropriate parameters without requiring operator expertise, thereby simplifying operation while achieving radiation dose optimization.
Solution Approach 2:
The system performs preliminary actions by pre-establishing optimized scan protocols and parameters before the actual imaging procedure. The processor retrieves pre-optimized parameter sets based on patient factors, eliminating the need for operators to manually select parameters while ensuring optimal radiation dose and image quality.
3Object-affected harmful factors
If CT scanners use fixed scan protocols, then operational simplicity is maintained, but interpatient dose variability and overdose occur
Solution Approach 1:
The system transitions from fixed protocols to dynamic parameter adjustment. The processor automatically modifies scan parameters in real-time based on individual patient characteristics such as body habitus, age, and clinical indication. This dynamic approach eliminates interpatient dose variability while the automated nature of the system keeps the overall complexity manageable.
4Object-affected harmful factors
If CT operators lack knowledge of radiation dose reduction technologies, then operational simplicity is maintained, but dose optimization is lost
Solution Approach 1:
The system provides feedback to operators by displaying recommended scan parameters and highlighting deviations from optimized protocols. This feedback mechanism educates operators about radiation dose reduction technologies while maintaining operational simplicity, as the system handles the complex parameter optimization automatically.
Data Source
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Figure 3A~3B
AI summary
A computing apparatus includes a processor (212) that evaluates at least one scan parameter of a scan protocol selected for scanning a subject with an imaging system (102) based on a corresponding scan parameter policy and generates a signal indicative of whether the scan parameter satisfies the scan parameter policy.