C-arm Imaging System with Three Independent Rotational Axes
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Solution Overview
Problem
C-arm X-ray imaging systems have limited rotational motion, restricting the ability to capture images from various angles without repositioning the patient, due to a lack of independent rotational axes.
Innovation Solution
An X-ray imaging system with a motorized C-arm capable of rotating about three independent axes: a lateral axis, an orbital axis, and a flip-flop axis, enabling at least 180 degrees of orbital coverage without moving the patient or table, utilizing a motorized system including multiple motors or servomotors for automated motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the C-arm is equipped with a single rotational axis, then the device complexity is reduced, but the orbital coverage and imaging angle variety are limited
Solution Approach 1:
The C-arm system divides the rotational movement into three independent axes (first, second, and third rotational axes), allowing each axis to handle a specific degree of freedom. This segmentation enables comprehensive orbital coverage (at least 180 degrees) while maintaining manageable complexity through modular motorized control of each axis independently.
Solution Approach 2:
The system transitions from single-axis rotation to three-axis rotation, adding two additional dimensions of rotational freedom. This dimensional expansion allows the C-arm to achieve at least 180 degrees of orbital coverage and capture images from multiple angles without requiring patient repositioning, thereby significantly improving adaptability.
2Productivity
If the C-arm rotates manually, then the device complexity is reduced, but the productivity and imaging efficiency are reduced due to frequent patient repositioning
Solution Approach 1:
The C-arm system incorporates motorized actuators that automatically control rotation along all three axes, enabling the device to reposition itself without manual intervention. This self-service capability allows the system to achieve comprehensive orbital coverage and capture multiple imaging angles efficiently, eliminating the need for frequent patient repositioning and significantly improving imaging productivity.
3Measurement precision
If the orbital range is limited, then the device complexity is reduced, but the measurement precision and imaging quality are compromised
Solution Approach 1:
The system enhances local quality by providing precise motorized control for each of the three rotational axes independently. This allows accurate positioning of the C-arm at specific angles within the orbital range, improving measurement precision and imaging quality. Each axis can be controlled with high precision to achieve the required at least 180 degrees of orbital coverage while maintaining overall system manageability.
Data Source
AI summary
An X-ray imaging system is provided. The X-ray imaging system includes an X-ray radiation source, an X-ray detector, and a C-arm. The C-arm has the X-ray radiation source disposed on a first end and the X-ray detector disposed on a second end opposite the first end. The X-ray imaging system also includes a motorized system configured to rotate the C-arm about three different rotational axes.