MRI RF Signal Sampling for Multi-Nuclei Image Reconstruction
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Solution Overview
Problem
Traditional MRI systems primarily focus on hydrogen nuclei, limiting the ability to effectively sample and process signals from multiple nuclear species, which are increasingly relevant in MR spectroscopic studies.
Innovation Solution
A digital signal processing device and method for receiving and processing RF signals from multiple nuclei, including specialized components like demultiplexers and digital signal processors, to handle and reconstruct images from various nuclear species.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional MRI systems focus on hydrogen nuclei only, then the system design is simple and well-established, but the ability to sample and process signals from multiple nuclear species is limited
Solution Approach 1:
The patent divides the signal processing system into separate processing channels for different nuclear species (hydrogen, helium-3, lithium-7, etc.). Each channel is optimized for specific nuclei with appropriate filtering and demodulation parameters, allowing the system to handle multiple species simultaneously while maintaining manageable complexity through modular architecture
Solution Approach 2:
The patent designs a universal receiver system that can process signals from multiple nuclear species through a common architecture. The system uses configurable demodulators and processing channels that can be adapted to different nuclei types, enabling one system to perform multiple functions rather than requiring separate dedicated systems for each nuclear species
2Measurement precision
If the MRI system uses specialized components for multiple nuclei processing, then the sampling and processing capability is enhanced, but the device complexity increases
Solution Approach 1:
The patent applies local quality by optimizing specific processing parameters and filter characteristics for each nuclear species channel. Each processing path has tailored demodulation frequencies, filter bandwidths, and sampling rates matched to the specific resonance characteristics of particular nuclei, ensuring high measurement precision for each species while maintaining a unified system architecture
Data Source
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AI summary
A device for receiving RF signal is provided. The device includes a receiving component configured to receive a radio frequency (RF) signal and a sampling component configured to sample the RF signal. The sampling component may include a plurality of filters, a demultiplexer, a clock synthesizer, an analog-to-digital converter (ADC), and a digital signal processing device. The sampling component may obtain an intermediate frequency (IF) signal based on the plurality of filters, the demultiplexer, the clock synthesizer, the ADC, and the digital signal processing device.