Mobile X-ray Detector Orientation Control via Rotation Detection
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Solution Overview
Problem
Existing methods for maintaining image orientation in surgical mobile C-arm units are ineffective when the imaging unit moves towards a floor surface, as they rely on detecting rotation based on a ceiling-fixed suspension, which is not applicable in such scenarios.
Innovation Solution
A mobile X-ray diagnostic apparatus that detects the rotation amount on a horizontal surface and controls the X-ray detector's rotary drive based on this detection, ensuring constant image orientation regardless of axle support structures before and after movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the PTL 1 method is used to detect rotation amount based on ceiling-fixed suspension, then image orientation can be kept constant in overhead travelling C-arm, but the method cannot be applied when imaging unit moves toward floor surface
Solution Approach 1:
The patent introduces a rotation amount detection device as an intermediary component that is fixed to the main body rather than relying on ceiling suspension. This mediator enables rotation detection to work independently of the support structure location, making the system adaptable to both overhead and floor-based operations while maintaining reliable image orientation consistency
Solution Approach 2:
The rotation amount detection device is designed to function universally regardless of whether the C-arm is in overhead travelling mode or floor-based mode. By making the detection system independent of the support structure, the same detection mechanism can serve multiple operational scenarios, enhancing the system's versatility while maintaining orientation reliability across different configurations
2Reliability
If manual orientation adjustment is performed after movement, then image orientation can be corrected, but operational efficiency is reduced
Solution Approach 1:
The system performs self-correction of image orientation by automatically detecting the rotation amount and controlling the detector rotation drive to compensate for any orientation changes. This self-service mechanism eliminates the need for manual intervention, maintaining reliable image orientation while significantly improving operational efficiency through automated control
Solution Approach 2:
The patent implements a feedback control system where the rotation amount detected by the detection device is fed back to the control unit, which then adjusts the detector rotation accordingly. This closed-loop feedback mechanism ensures continuous maintenance of correct image orientation without requiring manual adjustment, thereby improving both reliability and productivity
Data Source
AI summary
The problem addressed by the invention is to always keep an imaging angle of an X-ray detector to an object constant before and after an imaging unit is moved. In order to solve the problem, a mobile X-ray diagnostic apparatus related to the present invention detects a rotation amount of a main body in a horizontal surface due to movement on a floor surface and controls rotation drive of the X-ray detector based on a detection result.