X-Ray Table Tilt Control Based on Subject Holding Direction
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Solution Overview
Problem
Existing X-ray imaging apparatuses struggle to prevent the shifting of a subject's position on the table top due to tilting in a predetermined direction, particularly when the subject is gripping a holding member, as they do not account for the direction of tilting relative to the position of the holding member.
Innovation Solution
The apparatus includes an image processing unit to detect the presence and position of subject holding members and a controller to determine if the direction of tilting coincides with a movement-prohibited direction where no holding member is present, restricting the table top operation or notifying the operator to prevent shifting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the table top is tilted in a direction without a subject holding member, then the imaging angle can be adjusted, but the subject's position on the table top shifts
Solution Approach 1:
The control unit detects the presence or absence of a subject holding member in the tilting direction before the table top is tilted. When no holding member is detected, the control unit prohibits the tilting operation in advance, preventing the harmful effect of subject position shift before it occurs. This preliminary prevention resolves the contradiction by allowing angle adjustment only when safety conditions are met.
Solution Approach 2:
The imaging unit captures images to detect the presence or absence of subject holding members, and this detection information is fed back to the control unit. The control unit uses this feedback to determine whether to permit or prohibit tilting operations. This closed-loop feedback system ensures that tilting is only allowed when subject holding members are properly positioned, maintaining subject stability while enabling necessary angle adjustments.
2Stability of the object's composition
If the table top tilting operation is restricted when no subject holding member is present, then subject position stability is improved, but the ease of operation deteriorates
Solution Approach 1:
The system continuously monitors the presence of subject holding members through imaging and provides feedback to the control unit. This feedback mechanism enables intelligent, conditional control where tilting is prohibited only when necessary (no holding member detected), rather than imposing blanket restrictions. This resolves the contradiction by making the operation restriction adaptive rather than absolute.
Solution Approach 2:
The imaging unit automatically detects the presence or absence of subject holding members without requiring manual input from the operator. The system self-monitors its own operational safety conditions and automatically permits or prohibits tilting based on detected conditions. This reduces the burden on the operator while maintaining safety, resolving the contradiction between stability and ease of operation.
Data Source
AI summary
The X-ray imaging apparatus is provided with an image processing unit for acquiring the presence or absence of a subject holding member, and a controller. The controller is configured to acquire a movement-prohibited direction which is a direction in which the subject holding member is not provided, based on the presence or absence of the subject holding member, and perform at least one of restricting the operation of the table top moving mechanism and notifying that the direction of tilting the table top and the movement-prohibited direction coincide, when the direction of tilting the table top and the movement prohibited direction coincide.