Photon-Counting CT Scan Parameter Control Across Multiple Protocols
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Solution Overview
Problem
In photon counting CT, the increase in the number of examination protocols due to varying measurement modes complicates the practical setting of individual scan parameters for each protocol, making it impractical to register parameters with scan regions.
Innovation Solution
A control device and method that specifies a scan region and examination purpose, associating scan parameters with rules to facilitate easy setting, including multiple types of parameters based on scan region and examination purpose, and considers system state for CT scans using a photon counting type radiation detector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of measurement modes is increased in photon counting CT, then the versatility and functionality of the CT apparatus is improved, but the number of examination protocols increases, making it difficult to individually set and register scan parameters for each protocol
Solution Approach 1:
The control device uses a universal rule-based system that can handle multiple measurement modes through a single framework. Instead of creating separate protocols for each measurement mode, the system uses general rules that automatically adapt to different modes, allowing one protocol structure to serve multiple functions across different measurement modes
Solution Approach 2:
The system dynamically adjusts scan parameters based on the selected measurement mode by applying different rules. When a measurement mode is selected, the control device automatically changes parameters such as tube voltage, tube current, and other scan conditions according to pre-defined rules associated with that measurement mode, eliminating the need for manual protocol creation for each mode
2Adaptability or versatility
If the number of examination protocols is increased to match the number of measurement modes, then the adaptability to different measurement modes is improved, but the ease of operation deteriorates as it becomes impractical to individually set parameters for each protocol
Solution Approach 1:
The control device performs self-service by automatically selecting and applying scan parameters based on the selected measurement mode. The system uses pre-configured rules that automatically determine appropriate parameters without requiring user intervention to manually set each parameter, making the operation simple while maintaining adaptability to different measurement modes
Solution Approach 2:
Scan parameters and rules are pre-configured and stored in the control device before actual scanning. When a measurement mode is selected, the system retrieves the pre-defined rules and automatically applies the appropriate parameters, eliminating the need for users to perform time-consuming manual parameter setting for each protocol
Data Source
AI summary
A control device used in a CT scan that acquires a plurality of pieces of projection data of a subject by a photon counting type radiation detector, the control device includes at least one processor configured to specify a scan region and an examination purpose of the subject, acquire a scan parameter based on the specified scan region and examination purpose, and present the acquired scan parameter as part of a scan condition.