Movable Detector Positioning for Precise Radiographic Imaging Alignment
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Solution Overview
Problem
Existing radiographic imaging devices face challenges in achieving precise alignment and positioning between the radiation source and detector, especially when the detector is used independently of a cassette assembly, limiting their application to specific body positions.
Innovation Solution
A radiographic imaging device with a movable detector and a system of base stations and posture sensors that calculate and adjust the relative position and posture of the detector and radiation source using signal transmission and reception, enabling precise alignment through a controller-driven support assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the detector is used independently of a cassette assembly to enable flexible placement, then adaptability is improved, but positioning precision deteriorates
Solution Approach 1:
The patent introduces base stations and posture sensors as intermediary components to establish a coordinate system that links the movable detector with the radiation source. The base stations transmit signals to the detector, and the posture sensors measure the detector's position and orientation, enabling precise positioning without physical constraints.
Solution Approach 2:
The patent replaces the traditional mechanical cassette assembly with an electronic positioning system. Instead of using a physical guide structure, the system uses signal transmission between base stations and detectors, combined with posture sensor measurements, to achieve precise positioning through computational methods rather than mechanical constraints.
2Adaptability or versatility
If the detector is made movable to expand application scenarios, then adaptability is improved, but alignment precision deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where posture sensors continuously measure the detector's position and orientation, and this information is fed back to the control system. The system then calculates the relative position between the head and detector and provides real-time adjustments to maintain precise alignment despite the detector's mobility.
Solution Approach 2:
The patent transforms the static alignment problem into a dynamic one by making the detector movable. The system continuously adapts to the detector's new position through real-time measurement and calculation, allowing the alignment to be maintained dynamically rather than being fixed mechanically.
3Measurement precision
If base stations and posture sensors are introduced to improve positioning, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The patent divides the positioning system into separate functional modules: base stations for signal transmission, posture sensors for measurement, and a control system for calculation and coordination. This segmentation allows each component to perform its specific function independently, making the overall complex system more manageable and maintainable.
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 imaging in various body positions by allowing the detector to be placed flexibly, expanding the device's application scenarios while ensuring accurate alignment and image quality.
Implementation Method 1
the base station is configured to transmit a signal to the tag and receive a signal returned from the tag
Implementation Method 2
the first posture sensor is configured to measure a posture of the detector
Implementation Method 3
the detector converts the received X-radiation rays into electrical signals to form an image
Data Source
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Figure 4(1)~4(2)
Figure 5(1)~5(2)
AI summary
A radiographic imaging device and a positioning method thereof are provided. The radiographic imaging device includes a head, a movable detector, a first posture sensor, at least one first base station and at least one tag. The first base station is configured to transmit a signal to the tag and receive a signal returned from the tag. In the present disclosure, the movable detector is used, which can be placed without being limited to a specific location. Therefore, the detector can perform the imaging at a plurality of positions, which effectively expands the application scenario of the radiographic imaging device. Furthermore, the base station and the tag are used to position the movable detector, and the posture sensor is used to measure the posture of the detector, which facilitates the radiographic imaging device to complete the position matching of the head and the movable detector (e.g., making the two meet a preset position relationship).