Radiographic Imaging System Division Region Control
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Solution Overview
Problem
Radiographic imaging systems face challenges in efficiently capturing images of subjects with large thicknesses due to insufficient radiation from low-output devices, leading to the need for multiple exposures, which can be cumbersome and affect image quality.
Innovation Solution
A radiographic imaging system that divides the imaging region into multiple areas for sequential imaging or performs multiple exposures, using a radiation detector with pixels that generate and accumulate charges, and a control system that displays the progress of imaging, including remaining accumulation duration and irradiation timings, to manage dark current and ensure efficient image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple exposures are performed to image thick subjects, then sufficient radiation amount is obtained, but imaging time increases and image quality deteriorates
Solution Approach 1:
The imaging region is divided into multiple division regions, and imaging is performed sequentially on each division region during the accumulation period. This segmentation allows the radiation detector to capture sufficient radiation for thick subjects while completing imaging in a single accumulation period, avoiding the time penalty of multiple sequential exposures.
2Quantity of substance
If multiple exposures are performed to image thick subjects, then sufficient radiation amount is obtained, but dark current increases
Solution Approach 1:
By dividing the imaging region into multiple division regions and imaging them sequentially during the accumulation period, the system obtains sufficient radiation for thick subjects without extending the total accumulation time. This prevents dark current accumulation that would occur with multiple sequential exposures, as all imaging is completed within a single accumulation window.
3Loss of time
If sequential imaging is performed using division regions, then imaging time is reduced, but device complexity increases
Solution Approach 1:
The imaging region is segmented into multiple division regions that can be imaged sequentially. The radiation detector is configured with multiple pixels arranged in division regions, and the control section manages sequential imaging by controlling the switching elements. This segmentation approach reduces imaging time while the complexity is managed through software control rather than hardware complexity.
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 allows for effective imaging of thick subjects by optimizing the imaging process through division imaging or multiple exposures, improving image quality and reducing the impact of dark current, while providing clear progress indicators for users.
Implementation Method 1
a sensor portion that generates charges in accordance with radiation amounts of irradiated radiation
Data Source
AI summary
A radiographic imaging system that includes: a radiation detector including an imaging region in which a plurality of pixels are provided, each pixel including a sensor portion that generates charges in accordance with radiation amounts of irradiated radiation and accumulates the generated charges during an accumulation period, and a switching element that reads out the charges from the sensor portion after the accumulation period; an imaging control section that images a radiographic image by sequentially imaging radiographic images during the accumulation period using division regions, into which the imaging region of the radiation detector is plurally divided, one at a time; and a display control section that displays, at a display section, information relating to remaining imaging until the imaging is complete, the information representing a state of progress of the imaging by the imaging control section.