Radiography Apparatus Reflective Display for Posture Guidance
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Solution Overview
Problem
Current radiography apparatuses require operator intervention to help subjects assume a suitable posture for radiography, which increases contact between the operator and the subject, especially during the COVID-19 pandemic, and existing solutions provide limited notification information that does not effectively guide the subject's posture.
Innovation Solution
A radiography apparatus with an imaging table, a detection sensor (such as an optical camera) to monitor the subject's posture, a display to show notification information, and a reflective member to ensure the subject can see the display without operator intervention, allowing the subject to adjust their posture independently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a display is provided in the holder to show notification information, then the subject can see instructions, but the display position is restricted by the holder mechanism and cannot be optimally positioned for subject visibility
Solution Approach 1:
The display is relocated from the two-dimensional constraint of the holder to a three-dimensional position above the subject's head, utilizing vertical space to achieve optimal viewing angle and visibility without being constrained by the holder's mechanical structure
Solution Approach 2:
A reflective member (mirror) is introduced as an intermediary between the display and the subject's eyes, allowing the display to be positioned above the head while reflecting the image down to the subject's line of sight, thereby decoupling the display position from direct viewing constraints
2Loss of information
If simple instruction notifications are displayed, then the subject receives basic guidance, but the notification information is insufficient to enable the subject to independently assume suitable posture
Solution Approach 1:
The system captures images of the subject's posture via camera, processes them to generate notification information about posture correctness, and displays both the captured image and guidance instructions. This closed-loop feedback enables the subject to see their own posture and receive targeted corrections, facilitating independent posture adjustment
Solution Approach 2:
The subject's actual posture is captured and displayed as an image on the notification screen, providing the subject with a visual copy of their own posture. This allows the subject to compare their posture against the displayed image and make accurate self-corrections without operator intervention
3Measurement precision
If the operator manually guides the subject's posture, then accurate positioning is achieved, but contact between operator and subject increases, creating safety risks during pandemic
Solution Approach 1:
The system enables the subject to independently adjust their posture by displaying captured images and automated notification information on a screen positioned above the subject's head. The subject uses this self-service feedback mechanism to achieve accurate positioning without operator contact, eliminating the harmful factor of close proximity interaction
Solution Approach 2:
The manual mechanical guidance system (operator physically guiding subject) is replaced with an automated optical-electronic system comprising camera, image processing unit, and display. This substitution maintains posture positioning accuracy while eliminating the need for operator-subject contact
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
Enables the subject to take a suitable posture for radiography without operator assistance, reducing contact and improving the effectiveness of notification information by displaying relevant images and guidance based on real-time detection of the subject's posture.
Implementation Method 1
a reflective member that reflects the notification screen such that the subject facing the imaging table visually recognizes the notification information
Data Source
AI summary
A radiography apparatus includes an upright imaging stand that is used for radiography on a subject, a camera as a detection sensor that immediately detects a state of the subject with respect to the upright imaging stand, a tablet terminal, and a reflective member. The tablet terminal displays a notification screen including an image output from the camera. The reflective member reflects the notification screen such that the subject facing the upright imaging stand visually recognizes the image.