Integrated coil, special for non-human primates, in magnetic resonance imaging system

Abstract

The invention discloses an integrated coil, special for non-human primates, in a magnetic resonance imaging system. According to the technical scheme, the integrated coil comprises a coil shell, a radio-frequency emission unit, a signal receiving unit, a pre-amplification unit, a cable connector connected and communicated with the magnetic resonance imaging system and a three-dimensional positioning device matched with the coil. The integrated coil has the advantages that the radio-frequency emission unit uses a birdcage type coil, provides a stable and even radio-frequency field, and is high in emission efficiency and low in SAR value; the signal receiving unit uses an eight-channel phased array coil, fits the head of a primate, detects deep tissue signals, acquires images with high signal-to-noise ratio and high spatial resolution and is cooperated with the parallel imaging technology to increase magnetic resonance imaging speed, shorten echo time and evidently improve EPI image signal-to-noise ratio and geometric distortion; the head fixing component of the three-dimensional positioning device is fixed with the coil through ear rods on two sides, and the head of the primate can be stably fixed in the optimal imaging area of the coil for magnetic resonance imaging.

Description

technical field [0001] The present invention relates to equipment in magnetic resonance imaging, in particular to a radio frequency receiving coil used in a magnetic resonance imaging system, which can be used for the head of a non-human primate in an awake (or anesthetized) state. Background technique [0002] Magnetic resonance imaging technology has become one of the most important medical imaging technologies and is widely used in clinical practice because of its good soft tissue resolution ability, ability to image organ tissue functions, and no ionizing radiation hazards to the subject. The main components of the magnetic resonance system include the main magnet, gradient coil, radio frequency coil, spectrometer system, power supply system and auxiliary equipment. Among them, the radio frequency coil not only plays the role of exciting the magnetic resonance radio frequency signal, but also plays the role of receiving the magnetic resonance signal. It is one of the cor...

AI Technical Summary

Problems solved by technology

[0005] In addition to the above characteristics, what is more important is that the scanned object must be kept still during the MRI process. Unlike humans, non-human primates cannot keep still when scanning their heads. , the head stereotaxic device must be used for fixation, and the size and shape of conventional coils often cannot match the stereotaxic device

At present, the common experimental head fixation devices for non-human primates are mostly made of paramagnetic materials (such as iron and other metal materials), which are easy to distort the image; the common head fixation devices are large in appearance and cannot be fitted with coils Requirements for animal head scans

Images