Magnetic Resonance Imaging (MRI) Systems: Redefining Medical

  Aug 14, 2023

MRI Scanners

What are MRI scanners?

MRI stands for Magnetic Resonance Imaging. MRI scanners are advanced medical devices used to create detailed images of the internal structures of the body. These images provide valuable information about organs, tissues, and various medical conditions.

How do MRI scanners work?

MRI scanners use a powerful magnetic field, radio waves, and a computer to generate detailed cross-sectional images of the body. When a patient enters the MRI machine, the magnetic field aligns the hydrogen atoms in their body. Radio waves are then used to temporarily disrupt this alignment. As the atoms return to their normal alignment, they emit signals that are captured by the scanner's detectors and used to create detailed images.

What are the components of an MRI scanner?

An MRI scanner consists of several essential components, including a strong magnet, radiofrequency coils, gradient coils, a computer, and a display monitor. The strong magnet generates the magnetic field required for the imaging process. Radiofrequency coils emit and receive radio waves, while gradient coils help create the detailed spatial information in the images.

What are the applications of MRI scanners?

MRI scanners have a wide range of applications in the medical field. They are commonly used for diagnosing various conditions such as tumors, injuries, infections, and disorders of the brain, spine, joints, and internal organs. MRI is particularly useful for soft tissue imaging, making it valuable in areas like neurology, orthopedics, cardiology, and oncology.

Why is cooling important in MRI scanners?

MRI scanners use superconducting magnets that need to be cooled to very low temperatures to operate effectively. Helium has traditionally been used for cooling, but its scarcity has led to challenges in the availability of liquid helium. Cooling is crucial to maintain the superconducting state of the magnets and ensure accurate and high-quality imaging.

What is the innovation in MRI scanner design?

Newer MRI scanners are being designed to reduce reliance on scarce liquid helium. Instead, they use liquid nitrogen for cooling, which is more abundant and cost-effective. This innovation aims to make MRI scans more accessible by addressing helium shortage-related challenges and potentially reducing scan costs.

What are the benefits of the new design?

The new design of MRI scanners using liquid nitrogen cooling is expected to lower the cost of scans, making them more affordable for patients. This innovation also helps overcome helium shortage-related issues and ensures the continued availability of MRI services.

Who is developing these new MRI scanners in India?

Voxelgrids Innovations Private Ltd., a company based in Bangalore, India, has developed a unique MRI scanner that utilizes liquid nitrogen for cooling. This innovation has the potential to revolutionize the accessibility and affordability of MRI scans in the country.


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