Magnetic-resonance radio-frequency coil performance evaluation method and system

Abstract

The invention relates to a magnetic-resonance radio-frequency coil performance evaluation method, which comprises the steps of establishing a magnetic-resonance multi-channel radio-frequency coil model and starting the multi-channel radio-frequency coil model to produce an excited magnetic field; loading a digital human model in the multi-channel radio-frequency coil model; calculating the electromagnetic field of each coil channel in the multi-channel radio-frequency coil model when the digital human model is loaded; calculating the coil sensitivity of the multi-channel radio-frequency coil model according to the magnetic field of each coil channel; calculating the noise coupling matrix of the multi-channel radio-frequency coil model according to an electric field produced by each coil channel; calculating the signal-to-noise ratio of the multi-channel radio-frequency coil model according to the coil sensitivity and the noise coupling matrix. The magnetic-resonance radio-frequency coil performance evaluation method has the advantages that the actual measurement environment is not required to be established, the performance of magnetic-resonance radio-frequency coils can be conveniently and quickly evaluated and the manpower and the material resources are saved. Moreover, the invention additionally provides a magnetic-resonance radio-frequency coil performance evaluation system.

Description

【Technical field】 [0001] The invention relates to magnetic resonance imaging technology, in particular to a method and system for evaluating the performance of magnetic resonance radio frequency coils. 【Background technique】 [0002] Magnetic Resonance Imaging (MRI) technology is a high-end medical imaging technology that has developed most rapidly in recent years. Compared with other imaging techniques such as X-ray, CT and ultrasound imaging, MRI is a multi-nuclide, multi-contrast mechanism, high-resolution, high-contrast and non-invasive medical imaging technique. [0003] As an important part of the magnetic resonance imaging system, the radio frequency coil is one of the core components for exciting and receiving magnetic resonance signals, and its performance directly affects the quality of the final image. The production components of the magnetic resonance radio frequency coil are generally required to be non-magnetic, and the price is relatively expensive. In orde...

AI Technical Summary

Problems solved by technology

The actual measurement of the above performance parameters of multi-channel RF coils is generally more accurate, but often requires a lot of manpower and material resources

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