Medical Imaging Device Radiation Modulation for Professional Safety
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Solution Overview
Problem
Medical professionals are exposed to radiation during medical imaging procedures, particularly in interventions, due to scatter radiation, and existing methods do not effectively minimize their exposure while allowing for necessary monitoring and intervention.
Innovation Solution
A method and device that capture the position of moving objects, such as medical professionals, relative to the irradiation region and adjust the radiation source's intensity during rotational movement, reducing radiation emission in specific angular ranges to minimize exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the radiation source continuously emits radiation during rotational movement to maintain imaging capability, then the imaging quality and monitoring capability are maintained, but the radiation exposure of medical professionals increases
Solution Approach 1:
The radiation source emits radiation periodically rather than continuously. The control unit modulates the radiation emission to be active only during angular positions necessary for imaging, and reduced or inactive during angular positions where medical professionals are present. This periodic emission pattern maintains imaging capability while significantly reducing overall radiation exposure to medical professionals.
Solution Approach 2:
The radiation emission intensity is dynamically adjusted based on the real-time angular position of the radiation source and the detected positions of medical professionals. The control unit continuously modifies the radiation emission level - full intensity when needed for imaging, reduced or zero intensity when medical professionals are in the radiation path - thereby resolving the contradiction between maintaining imaging reliability and reducing harmful radiation exposure.
2Object-affected harmful factors
If the radiation intensity is reduced in certain angular ranges to protect medical professionals, then the radiation exposure is minimized, but the imaging data quality may be compromised
Solution Approach 1:
The system employs feedback from detection units that continuously monitor the angular positions of medical professionals. The control unit receives this feedback and dynamically adjusts the radiation emission accordingly. This feedback mechanism ensures that radiation is reduced only in angular ranges where medical professionals are present, while maintaining full radiation intensity in other angular ranges, thus preserving imaging data quality without compromising professional safety.
Solution Approach 2:
The radiation emission is differentiated by angular position - full intensity is applied locally in angular ranges where no medical professionals are present, while reduced or zero intensity is applied locally in angular ranges where medical professionals are detected. This spatially differentiated radiation emission strategy protects medical professionals while maintaining sufficient imaging data quality from unaffected angular positions.
3Object-affected harmful factors
If the system continuously monitors the position of moving objects to adjust radiation emission, then the radiation exposure is dynamically minimized, but the device complexity increases
Solution Approach 1:
The detection units and control unit work autonomously to monitor medical professional positions and automatically adjust radiation emission without requiring external intervention. The system serves itself by continuously detecting positions and autonomously modulating radiation levels, thereby dynamically minimizing radiation exposure without adding significant operational complexity to the user interface or workflow.
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
Effectively reduces radiation exposure for medical professionals by modulating the radiation source's intensity based on the position of moving objects, ensuring minimal radiation exposure while maintaining effective imaging and intervention capabilities.
Implementation Method 1
a radiation source (9), which is embodied during a rotational movement around an axis of rotation (5) to irradiate an irradiation region (6) from a plurality of angular positions
Implementation Method 2
a detector apparatus that interacts with the tomography device rotate around an axis of rotation and around an examination subject
Data Source
AI summary
A method is for actuating a medical imaging device including a radiation source, embodied during a rotational movement around an axis of rotation to irradiate an irradiation region from a plurality of angular positions. In an embodiment, the method includes capturing an object position of a moving object relative to the irradiation region. The Method further includes actuating the medical imaging device based upon the captured object position of the moving object, such that the intensity of the radiation emitted by the radiation source for a first partial number of the plurality of angular positions in a first angular range round the axis of rotation is reduced relative to a second partial number of the plurality of angular positions in a second angular range around the axis of rotation, the captured object position being included in the first angular range.