Synchronizer for Medical Imaging Interference Elimination
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Solution Overview
Problem
Medical imaging systems experience interference from magnetic fields generated by positioning radiation transmitters, leading to corrupted images due to their proximity to imaging radiation detectors.
Innovation Solution
A synchronizer is implemented to synchronize the operation of imaging radiation detectors and positioning radiation transmitters, ensuring that the latter do not transmit during the imaging process, and electromagnetic shielding is used to prevent magnetic field interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning radiation transmitters are positioned close to imaging radiation detectors to maximize signal-to-noise ratio, then positioning accuracy is improved, but electromagnetic interference with imaging detector increases causing image corruption
Solution Approach 1:
The system alternates between imaging mode and positioning mode in periodic cycles. During imaging mode, positioning transmitters are silenced; during positioning mode, imaging is suspended. This time-division multiplexing allows both systems to operate close together without simultaneous electromagnetic interference, resolving the contradiction between proximity for signal strength and interference avoidance.
Solution Approach 2:
The controller预先 identifies and prevents potential interference by silencing positioning transmitters before imaging acquisition begins. This preliminary action ensures that when imaging detector operates, no electromagnetic interference is present, allowing the transmitters to be positioned close to the detector without corrupting images.
2Productivity
If positioning radiation transmitters operate concurrently with imaging radiation detection, then real-time positioning is achieved, but image quality deteriorates due to magnetic field interference
Solution Approach 1:
The system implements periodic switching between imaging and positioning operations. Imaging acquisition occurs during dedicated imaging windows when positioning transmitters are inactive, ensuring image quality. Positioning is maintained through periodic transmissions during imaging intervals, achieving real-time positioning capability without compromising image quality.
Solution Approach 2:
The controller continuously monitors operational status and adjusts transmitter silence periods based on real-time feedback from imaging detector and positioning detector. This feedback mechanism ensures that positioning transmitters remain silent during critical imaging moments while maintaining positioning functionality through coordinated operational cycles.
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 eliminates visible flaws in images caused by magnetic field interference, allowing for real-time, interference-free imaging in medical procedures.
Implementation Method 1
the magnetic field generated thereby, may affect imaging radiation detector 26. Consequently the image formed on display unit 32 may be corrupted
Data Source
AI summary
In a medical apparatus including a medical imaging system and a medical position and navigation system (MPS), the medical imaging system including an imaging transmitter, periodically emitting imaging radiation and an imaging detector, the medical position and navigation system including at least one MPS transmitter periodically transmitting MPS radiation and at least one MPS detector, the MPS radiation electromagnetically interfering with at least one mode of operation of the imaging detector, a device for eliminating interference to the imaging detector caused by positioning radiation, the device comprising a synchronizer, coupled with the medical imaging system and with the medical position and navigation system, synchronizing the imaging detector and each the at least one MPS transmitter, so that neither of the at least one MPS transmitter transmits during the at least one mode of operation of the imaging detector.