Adaptive View Rate X-ray CT Data Transmission
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Solution Overview
Problem
Conventional X-ray CT apparatuses maintain a constant view rate, leading to increased data volume and unnecessary data transmission, as spatial resolution requirements vary across different regions of the Field of View (FOV), necessitating a more rational approach to optimize data collection and transmission.
Innovation Solution
The X-ray CT apparatus employs a dual-path data generation system, where high view rate data is collected for critical regions and aggregated data is used for non-critical regions, allowing for adaptive view rates based on the specific requirements of different areas within the FOV, thereby optimizing data transmission and reducing unnecessary data volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the view rate is uniformly increased to improve spatial resolution, then the spatial resolution is improved, but the data volume increases
Solution Approach 1:
The patent applies local quality by differentiating view rates based on spatial location within the field of view. High view rates are applied to regions requiring high spatial resolution (such as areas with fine structures or clinical interest), while lower view rates are applied to regions where high resolution is not critical. This spatially adaptive approach improves measurement precision where needed without uniformly increasing data volume across the entire field of view.
Solution Approach 2:
The patent segments the field of view into multiple regions with different spatial resolution requirements. By dividing the imaging area into critical and non-critical zones, the system can collect data at different view rates for each segment. This segmentation allows the system to optimize the balance between spatial resolution and data volume by focusing high-resolution data collection only on necessary regions.
2Measurement precision
If the view rate is uniformly increased to improve spatial resolution, then the spatial resolution is improved, but the data transmission burden increases
Solution Approach 1:
The system reduces data transmission burden by applying local quality principles to data acquisition. Instead of transmitting all data at high resolution throughout the entire field of view, the system transmits high-resolution data only for regions where it is clinically necessary, while using lower-resolution or aggregated data for other regions. This significantly reduces the overall data transmission volume and associated system complexity.
Solution Approach 2:
The patent extracts only the necessary high-resolution data from the complete dataset and transmits that selective portion. By identifying and extracting only the data from regions requiring high spatial resolution, the system minimizes transmission burden while preserving the essential information needed for diagnostic purposes.
3Measurement precision
If the view rate is uniformly increased to improve spatial resolution, then the spatial resolution is improved, but unnecessary data collection increases
Solution Approach 1:
The system improves data collection efficiency by applying local quality differentiation. Rather than collecting high-resolution data uniformly across the entire field of view, the system collects high-resolution data only in regions where spatial resolution is critical, and uses lower-resolution collection methods in other regions. This optimizes productivity by avoiding unnecessary high-resolution data collection.
Solution Approach 2:
The patent applies partial action by collecting high-resolution data only for the portion of the field of view that is actually needed, rather than uniformly across the entire area. This partial approach to data collection maintains sufficient spatial resolution for diagnostic accuracy while avoiding excessive data collection in regions where it is not necessary.
Data Source
AI summary
According to one embodiment, X-ray CT apparatus includes an X-ray tube, an energy integrating type detector, a time data generation circuit, and a projection data generation unit. The X-ray tube emits X-rays. The energy integrating type detector has a plurality of detector units arrayed in a channel direction that accumulate electric charges corresponding to X-rays transmitted through an object. The time data generation circuit generates time data at a timing when the electric charges accumulated in the detector reach a predetermined threshold. The projection data generation unit generates projection data using the time data and energy corresponding to the threshold.