Head/knee joint multipurpose radio frequency coil device based on 7.0t magnetic resonance imaging system

Abstract

The invention belongs to the technical field of magnetic resonance imaging, in particular to a head / knee joint multipurpose radio frequency coil device based on a 7.0T magnetic resonance imaging system. The device of the present invention includes a circularly polarized transmitting system for exciting magnetic resonance signals, an array receiving system for receiving magnetic resonance signals (including a receiving array combination for collecting knee joint magnetic resonance signals and a receiving array combination for collecting cranial magnetic resonance signals) ), used to fix and connect the transceiver system, and the chute guide rail that can switch equipment according to different scanning purposes. The transmitting system and receiving system use plastic without proton signals as the radio frequency circuit carrier and shell, and radio frequency channels are set inside. In the 7.0T ultra-high-field clinical magnetic resonance system, the present invention can use a single device to perform imaging functions on multiple parts while ensuring that the imaging quality remains unchanged, which will greatly reduce the cost, and does not require frequent replacement during the inspection process equipment, greatly increasing the efficiency of clinical examinations.

Description

technical field [0001] The invention belongs to the technical field of magnetic resonance imaging, and in particular relates to a radio frequency coil device used in a human organ magnetic resonance imaging system, in particular to a head / knee joint multipurpose radio frequency coil device. Background technique [0002] Magnetic resonance imaging (MRI) is an application of nuclear magnetic resonance (NMR) in medicine. The main magnetic system of the magnetic resonance imaging system produces a uniform strong magnetic field (called the main magnetic field of the MRI system—B 0 ). The hydrogen nuclei in the human body are in B 0 Spin polarization occurs under the field. The magnetically polarized hydrogen nucleus spins generate a magnetic moment i in the human body. in the absence of B 0 In the case of excitation by an external magnetic field other than , the magnetic moment is in a steady state, and the direction and the main magnetic field B 0 Orientation is coaxial an...

AI Technical Summary

Problems solved by technology

[0008] In order to solve a series of defects in the existing head and knee joint devices, such as small image range, serious signal loss, cumbersome operation, low inspection efficiency, and high equipment investment cost, the purpose of the present invention is to provide a widely applicable The head / knee joint multi-purpose radio frequency coil device with a global imaging field of view is easy and simple to use, and the equipment is highly integrated.

Under the premise that the imaging quality is fully guaranteed, it not only solves the problem of small brain imaging range and limited diagnosis, but also simplifies the scanning process, and does not need to replace the equipment when switching between head examination and knee joint examination, which greatly improves the The efficiency of inspection reduces the burden of clinical workers and avoids the potential risk of equipment damage during the replacement process; at the same time, only one device can be purchased to meet the diversity of inspections, which greatly reduces the cost of equipment

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