X-ray Imaging System Metal Detection C-Arm Integration
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Solution Overview
Problem
Modern x-ray imaging systems with C-arms face significant image artifacts due to metallic objects in the field of view, which can reduce diagnostic quality and require repeated scans, leading to unnecessary radiation exposure.
Innovation Solution
An x-ray imaging system equipped with a metal detection apparatus that identifies metallic objects before image recording, allowing for their removal and enabling artifact-free imaging by scanning the field of view with a metal detection apparatus integrated on the C-arm or x-ray detector, providing real-time alerts for user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional x-ray imaging is performed without pre-scan metal detection, then the imaging process is simple and quick, but metal artifacts degrade image quality and may require repeated scans increasing radiation exposure
Solution Approach 1:
The system divides the imaging process into two distinct phases: a preliminary metal detection scan and a subsequent diagnostic x-ray scan. This segmentation allows the metal detection function to be performed separately using different technical approaches (millimeter wave or terahertz radiation), enabling artifact-free diagnostic imaging without compromising the simplicity of the overall workflow
Solution Approach 2:
The patent introduces an intermediary metal detection system that acts as a mediator between the patient and the diagnostic x-ray system. This intermediary detects metallic objects using non-ionizing radiation (millimeter wave or terahertz) and provides information that allows the diagnostic scan to be optimized or repeated appropriately, thereby improving image quality while managing radiation exposure
2Object-affected harmful factors
If a metal detection apparatus is integrated into the x-ray imaging system, then metal objects can be detected before recording improving image quality, but the device complexity increases
Solution Approach 1:
The patent combines the metal detection apparatus with the existing x-ray imaging system by integrating it into the C-arm structure. The detection system shares the same mechanical support, positioning mechanisms, and control infrastructure as the diagnostic x-ray system, thereby reducing the additional complexity that would arise from a completely separate detection system
Solution Approach 2:
The C-arm structure serves multiple functions: it supports both the diagnostic x-ray source and detector, and also houses the metal detection apparatus. This multi-functionality allows the system to perform both metal detection and diagnostic imaging through a single integrated platform, reducing the need for separate mounting structures and control systems
3Reliability
If the field of view of the x-ray detector is expanded to cover the entire measurement volume of the metal detection apparatus, then all metallic objects can be detected, but the radiation exposure area increases
Solution Approach 1:
The system performs metal detection as a preliminary action before the diagnostic x-ray scan. By detecting metallic objects in advance using non-ionizing radiation, the system can then adjust the diagnostic scan parameters or repeat the scan only when necessary, thereby minimizing the overall radiation exposure area while ensuring complete detection of metallic objects that would cause artifacts
Solution Approach 2:
The metal detection apparatus uses a measurement volume that extends beyond the final diagnostic field of view to ensure complete detection of all potential metallic objects. However, the diagnostic x-ray scan is then adjusted to use only the necessary field of view for the actual diagnostic purpose, thereby applying partial action (scanning only where needed) after the excessive detection coverage has identified all metal artifacts
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 solution enhances image quality and reduces patient radiation exposure by allowing for the removal of metallic objects before recording, thereby improving diagnostic outcomes without disrupting the clinical workflow.
Implementation Method 1
a preliminary scan is initially performed using a metal detection apparatus in order to detect whether metallic objects are located in a measurement volume
Implementation Method 2
an x-ray source for irradiating an examination object positioned in an examination region with x-ray radiation
Implementation Method 3
an x-ray detector for converting the x-ray radiation into image data of the examination object
Data Source
AI summary
For a particularly interference-free recording of x-ray images, an x-ray imaging system that includes an x-ray source for irradiating an examination object positioned in an examination region with x-ray radiation, and an x-ray detector for converting the x-ray radiation into image data of the examination object is provided. The x-ray source and the x-ray detector are arranged on an adjustable mount. The x-ray imaging system also includes a metal detection apparatus for detecting metal objects that are arranged at least partially within a field of view of the x-ray detector. A corresponding method includes receiving an instruction to record at least one x-ray image, activating the metal detection apparatus, and scanning the field of view of the x-ray detector for metallic objects using the metal detection apparatus. A display or a signal is output in the event of a detection of a metallic object.