X-ray Diagnostic Apparatus Interference Prevention
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Solution Overview
Problem
Conventional X-ray diagnostic apparatus interference prevention functions are unable to recognize objects other than the couch and patient, leading to unnecessary deceleration or stopping of the moving body, which compromises clinical usefulness while maintaining safety.
Innovation Solution
The X-ray diagnostic apparatus sets an interference judgment region based on landmarks detected in the X-ray image, allowing for precise control of the movement of the X-ray generator and detector to optimize the interference prevention function, enhancing clinical usefulness while maintaining safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the interference prevention function uses a wide deceleration region to ensure safety, then safety is improved, but clinical usefulness deteriorates due to unnecessary deceleration
Solution Approach 1:
The interference judgment region is divided into a first region (larger clearance) and a second region (smaller clearance). Different movement control strategies are applied to each region: in the first region, the moving body is decelerated at a first deceleration rate, while in the second region, it is decelerated at a second deceleration rate that is smaller than the first. This localized differentiation allows the system to maintain safety through deceleration in the outer region while reducing unnecessary stopping in the inner region where clearance is already small, thereby improving clinical usefulness.
2Reliability
If the interference judgment region is set wide to prevent contact with interference objects, then safety is improved, but productivity deteriorates due to increased deceleration events
Solution Approach 1:
The interference judgment region is segmented into two sub-regions with different clearance thresholds. The first region has a larger clearance threshold where deceleration occurs at a higher first deceleration rate, while the second region has a smaller clearance threshold where deceleration occurs at a lower second deceleration rate. This segmentation reduces the frequency and intensity of deceleration events within the overall wide interference judgment region, thereby maintaining safety while improving imaging efficiency and reducing unnecessary interruptions.
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 a more efficient and user-friendly X-ray imaging process by recognizing and adapting to actual interference objects, optimizing the interference judgment region and reducing unnecessary deceleration, thus improving clinical usefulness and safety.
Implementation Method 1
an X-ray generator which generates X-rays; an X-ray detector which detects the X-rays
Data Source
AI summary
According to one embodiment, an X-ray diagnostic apparatus includes a holding device and processing circuitry. The holding device movably holds an X-ray generator and an X-ray detector. The processing circuitry generates an X-ray image of the subject, based on an output of the X-ray detector. The processing circuitry sets an interference judgment region between the holding device and an interference object, based on a landmark in the X-ray image. The processing circuitry controls movement of the holding device, based on the set interference judgment region.