Gradient Magnetic Field Coils

Our gradient magnetic field coil is an innovative tool that produces a magnetic field linearly across space. This feature allows for precise control and manipulation of magnetic fields in various applications.

Using advanced technology and materials, our gradient magnetic field coil is designed to produce a uniform magnetic field in a linear direction, without any interference or distortion. This makes it ideal for a variety of applications, ranging from medical imaging and diagnostics to scientific research and industrial manufacturing.

One of the key benefits of our gradient magnetic field coil is its ability to provide highly accurate and consistent results across a range of experimental settings. This is due to its unique design and construction, which ensures that the magnetic field produced is highly stable and predictable.

In addition, our gradient magnetic field coil is also highly efficient and cost-effective, making it an attractive choice for a wide range of applications. With its advanced capabilities and superior performance, it is no surprise that our gradient magnetic field coil is widely recognized as one of the leading tools in the industry.

At our company, we take pride in offering cutting-edge tools and technologies to our clients, and our gradient magnetic field coil is no exception. Whether you are a medical researcher, industrial manufacturer, or scientific researcher, our gradient magnetic field coil is sure to provide you with the accuracy, precision, and reliability you need to achieve your goals.

By using gradient magnetic field coils, a spatial linear magnetic field (static magnetic field direction) can be generated, and position information can be added to the signal obtained from MRI. Also known as gradient coils. In clinical MRI, it is usually referred to as a gradient coil, but before the emergence of clinical MRI, the coil that generates a gradient magnetic field was called a gradient coil. In nuclear magnetic resonance spectroscopy (NMR), a gradient magnetic field is used for spectral separation using molecular diffusion coefficients such as DOSY.

2.1Maxwell coil pairs

The structure of the gradient field Maxwell coil is very similar to the above three coils, but the central coil is removed, leaving only the smaller two coils. If the currents of two coils are opposite, the field at the center of the two coils is a uniform gradient magnetic field. Maxwell described that using a two coil structure can generate uniform force in small-scale testing. This type of Maxwell coil is similar to a Helmholtz coil, with the difference being that the coil distance increases from the coil radius R to √3R and the opposite current.

2.2 Golay coils

Golay type coils are well-known cylindrical gradient magnetic field coils in the X and Y directions. As shown in the figure, the coil is composed of four saddle shaped currents. Due to being proposed by Golay and Marcel, it is called Golay coil, Golay type coil. Gray type coils, although simple in shape like parallel four wire coils, exhibit high linearity. However, due to their large coil length and inductance, they are currently rarely used.

This type of cylindrical gradient magnetic field coil is mainly used in tunnel type MRI such as superconducting magnet MRI (many clinical MRI correspond to this)

2.2Others Gradient Magnetic Field Coils

Some of the gradient magnetic field coils shown above are classic coils, and coils with more complex shapes are used in many MRI devices. This is because there are various requests based on the application.

For example, in these classic coils, when the gap between the coils is narrow, the linear magnetic field region correspondingly decreases. Therefore, by using various X methods to design more advanced gradient magnetic field coils, a wide linear magnetic field region can be generated between narrow coils. At present, gradient magnetic field coils are designed using target magnetic field methods, finite element methods, evolutionary algorithms, and other methods.