Radiography Projection Alignment for Faster Stitching Imaging
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Solution Overview
Problem
Existing radiography systems face challenges in capturing a desired range of a subject due to positioning difficulties, especially when the distance between the radiation source and the subject is too close, requiring extensive time and posing difficulties for patients with illnesses or injuries to maintain specific postures.
Innovation Solution
A radiography system with a radiation generation device that includes a radiation source unit, projector, and processor to acquire distance and posture information, trim subject images based on visualization range, and project them onto a projection surface, optimizing emission conditions for efficient imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If stitching imaging is performed to capture a desired range of the subject, then the imaging coverage is improved, but the positioning time and patient burden increase significantly
Solution Approach 1:
The system performs preliminary actions by acquiring distance information and deriving visualization range before actual imaging. The processor calculates the visualization range based on the radiation source position and distance to the subject, allowing the system to pre-determine which areas will be visible and adjust imaging parameters accordingly, thus reducing the time needed during actual positioning and stitching imaging execution.
2Loss of time
If the radiation source is positioned close to the subject to reduce imaging time, then the positioning time is reduced, but the desired range cannot be fully imaged
Solution Approach 1:
The system dynamically adjusts imaging parameters based on the radiation source position and distance to the subject. The processor derives the visualization range dynamically from the acquired distance information, allowing the system to adapt the imaging coverage and stitching parameters in real-time according to the source-subject distance, ensuring optimal imaging coverage regardless of positioning constraints.
3Manufacturing precision
If patients are required to maintain specific postures for stitching imaging, then the imaging accuracy is improved, but the patient burden and difficulty increase
Solution Approach 1:
The system performs self-service by automatically acquiring distance information, deriving visualization range, and determining imaging parameters without requiring manual intervention or patient cooperation for complex positioning procedures. The processor autonomously calculates the visible range based on radiation source position and distance, reducing the need for patients to maintain specific postures while ensuring accurate imaging coverage.
Data Source
AI summary
A radiography system includes a radiation generation device including a radiation source unit that emits radiation, a projector that projects an image in an emission direction of the radiation, and at least one processor. The processor acquires distance information indicating a distance from the radiation source unit to a projection surface on which the image is projected, acquires a subject image which is a radiation image captured in the past for a subject of the radiation image, derives, based on the distance information, a visualization range of the subject visualized in the radiation image, which is captured for the subject and is based on the radiation emitted from the radiation source unit, trims the subject image based on the visualization range, and causes the projector to project the trimmed subject image.