X-ray CT Parallel Reconstruction and Display Timing Control
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Solution Overview
Problem
X-ray CT devices experience delays in displaying the first image after starting imaging, leading to standby time and inconsistent image display intervals during consecutive imaging.
Innovation Solution
The X-ray CT device performs reconstruction and data preservation processes in parallel with imaging, using a calculation unit to generate projection data and notify a display control unit of progress, allowing for asynchronous control of image display timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the X-ray CT device collects raw data corresponding to a single image and then performs reconstruction process or data preservation sequentially, then the reconstruction and preservation are completed thoroughly, but the time until the first image is displayed increases and standby time occurs
Solution Approach 1:
The system performs preliminary actions by starting the reconstruction process and data preservation process in parallel with the imaging process before the imaging is fully completed. The data preservation processing unit preserves imaging data in the storage unit in parallel with the imaging process, and the reconstruction processing unit performs reconstruction in parallel with the imaging process, reducing the time until the first image is displayed without compromising thoroughness
Solution Approach 2:
The system maintains continuous useful action by ensuring that the imaging process, data preservation process, and reconstruction process overlap in time. The display control unit controls display timing based on preservation information and reconstruction information, ensuring continuous image display without standby time while maintaining the quality and completeness of processing
2Loss of time
If the X-ray CT device performs reconstruction and data preservation in parallel with imaging, then the time until first image display is reduced and standby time is minimized, but the system complexity increases
Solution Approach 1:
The system segments the processing functions into distinct modular units: a data preservation processing unit that preserves imaging data in parallel with imaging, and a reconstruction processing unit that performs reconstruction in parallel with imaging. Each unit operates independently but coordinates through the display control unit, reducing standby time while managing complexity through functional segmentation
Solution Approach 2:
The system implements feedback mechanisms where the display control unit receives preservation information from the data preservation processing unit and reconstruction information from the reconstruction processing unit. Based on this feedback, the display control unit dynamically controls the display timing of reconstructed images, enabling efficient parallel processing with coordinated output
3Ease of operation
If the X-ray CT device displays images sequentially after consecutive imaging, then all images are displayed, but the image display intervals become inconsistent when there is variation in imaging speed
Solution Approach 1:
The system employs dynamic display control where the display control unit adjusts the display timing of reconstructed images based on real-time preservation information and reconstruction information. This dynamic adjustment ensures uniform image display intervals even when imaging speed varies, providing smooth image viewing while maintaining high display efficiency through parallel processing
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
This approach reduces the time to display the first image, minimizes standby time between imaging sessions, and ensures uniform image display intervals, enhancing operational efficiency and user experience.
Implementation Method 1
a scanner that detects a dose of an X-ray which is applied from the periphery of a subject on a bed and is transmitted through the subject, and acquires X-ray data
Data Source
AI summary
Arrangement to reduce a time until a first image is displayed, to reduce a standby time until the next imaging is started, and to uniformize a time interval in a case where a plurality of images are displayed. An X-ray CT device detects a dose of an X-ray, a storage unit that preserves image data, a calculation unit that generates, as the image data, projection data on the basis of the X-ray data in parallel to an imaging process in the scanner, preserves the projection data, notifies a display control unit of preservation information, performs a reconstruction process, a display unit that displays an image generated per the X-ray data, and the display control unit that controls a display timing of a reconstructed image to be displayed on the display unit on the basis of the preservation information and the reconstruction information.