MRI RF Signal Sharing for Ablation Electrode Integration
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Solution Overview
Problem
The existing systems for MRI-guided radiofrequency ablation require significant effort and equipment, leading to potential adverse effects and interference during MRI imaging.
Innovation Solution
A hybrid system that utilizes MRI high-frequency signals for both magnetic resonance imaging and radiofrequency ablation, eliminating the need for a separate high-frequency generator and allowing direct connection of the ablation electrode to the MRI system, thereby simplifying the setup and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate radiofrequency generator is used for ablation, then the ablation function can be performed, but the system complexity increases and interference during MRI imaging occurs
Solution Approach 1:
The patent merges the MRI radiofrequency signal generation and ablation functions into a single integrated system. The MRI system's RF amplifier and transmission coil are directly connected to the ablation electrode, eliminating the need for a separate radiofrequency generator. This consolidation reduces system complexity while maintaining both imaging and ablation capabilities.
Solution Approach 2:
The MRI radiofrequency signal generation system is designed to serve multiple functions: it can generate RF signals for MRI imaging and the same signals can be directed to the ablation electrode for tissue ablation. This multi-functionality allows a single system to perform both diagnostic imaging and therapeutic ablation without requiring separate dedicated equipment.
2Adaptability or versatility
If a separate radiofrequency generator is used for ablation, then the ablation function can be performed, but the equipment required becomes very complex
Solution Approach 1:
The patent combines multiple equipment components into a single integrated MRI system. The RF amplifier, transmission coil, and ablation electrode are integrated such that the MRI system can directly power the ablation electrode, eliminating the need for separate radiofrequency generator equipment and reducing overall system complexity.
3Adaptability or versatility
If separate signals are injected into the patient for ablation, then ablation can be performed, but interference with MRI imaging occurs
Solution Approach 1:
The patent maintains continuous synchronization between MRI imaging and ablation functions by using the same RF signal cycle for both purposes. The ablation electrode is connected to the MRI RF amplifier such that the RF signals are continuously available for either imaging or ablation based on real-time control, eliminating the need for separate signal injection and reducing interference.
Solution Approach 2:
The patent introduces a control system as an intermediary that manages the RF signal distribution. This control system directs the RF signals from the amplifier to either the transmission coil for imaging or to the ablation electrode for ablation, preventing simultaneous signal injection and reducing interference between the two functions.
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 reduces the complexity and cost of the system, minimizes interference during MRI imaging, and provides high image quality by using MRI signals exclusively for either imaging or ablation, with the added benefit of visualizing the ablation current for monitoring.
Implementation Method 1
At a specific frequency (the so-called Larmor frequency), this excites certain atomic nuclei in the body to resonate
Implementation Method 2
Radiofrequency ablation is ahyperthermic and minimally invasive approach for destroying tumors and metastases
Data Source
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AI summary
The invention relates to a hybrid system for performing a magnetic resonance tomography (MRT) and a radiofrequency ablation on a patient, comprising the following characteristics: a) the hybrid system comprises a magnetic resonance tomography system in which MRT high-frequency signals for carrying out the magnetic resonance tomography can be generated and supplied on an output terminal of the magnetic resonance tomography system; b) the hybrid system comprises at least one ablation electrode for performing the radiofrequency ablation; and c) the at least one ablation electrode is coupled to the output terminal of the magnetic resonance tomography system such that the radiofrequency ablation can be carried out by the at least one ablation electrode by means of the MRT high-frequency signals. The invention also relates to a method for operating such a hybrid system.