CT Image Reconstruction Using Timestamp Synchronization
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Solution Overview
Problem
CT image reconstruction is hindered by unpredictable and large transmission delays of dynamic sensor information in CT scanning systems, which can cause a mismatch between X-ray projection data and sensor information, affecting image quality.
Innovation Solution
The implementation of timestamp-based data frames for X-ray projection and dynamic sensor information, allowing for accurate synchronization and compensation during the image reconstruction process, ensuring that both data sets are aligned within the same sampling period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If data is transmitted without timestamp synchronization, then transmission speed is faster, but data alignment accuracy deteriorates
Solution Approach 1:
The patent applies preliminary action by inserting timestamps into data frames before transmission occurs. This allows the system to pre-establish a time reference framework that enables accurate synchronization and alignment of X-ray projection data with dynamic sensor information during the reconstruction process, without requiring complex real-time adjustment mechanisms.
Solution Approach 2:
The patent uses timestamps as an intermediary element that mediates between the transmission speed requirement and the data alignment accuracy requirement. The timestamp acts as a time reference marker that allows data to be transmitted at normal speed while still enabling precise temporal correlation and synchronization during the image reconstruction process.
2Reliability
If transmission delay compensation is implemented, then image quality improves, but processing time increases
Solution Approach 1:
The patent performs transmission delay compensation in advance by using timestamps to identify and select data acquired within the same sampling period before the image reconstruction process begins. This preliminary data selection and matching process eliminates the need for time-consuming iterative adjustments during reconstruction, thereby improving image quality without significantly increasing overall processing time.
3Manufacturing precision
If data synchronization is performed, then image clarity improves, but data processing complexity increases
Solution Approach 1:
The patent employs timestamps as an intermediary that simplifies the data synchronization process. By embedding time reference information directly into data frames, the system enables automatic temporal correlation between X-ray projection data and dynamic sensor information through simple timestamp comparison, avoiding the need for complex synchronization algorithms and reducing data processing complexity while maintaining image clarity.
Data Source
AI summary
A method for reconstructing a Computer Tomography (CT) image is disclosed. The method may comprise: obtaining a X-ray projection data frame and a dynamic sensor information data frame, wherein the X-ray projection data frame may include a first timestamp indicating acquisition time of X-ray projection data and the dynamic sensor information data frame may include a second timestamp indicating acquisition time of dynamic sensor information data; extracting the first timestamp from the X-ray projection data frame and extracting the second timestamp from the dynamic sensor information data frame; searching X-ray projection data and dynamic sensor information data which may be acquired in same sampling period according to a first timestamp and a second timestamp; and reconstructing a CT image according to the searched X-ray projection data and dynamic sensor information data which may be acquired in the same sampling period.