Project to Expand Access of MRI Systems to Underdeveloped Regions

(Fairfield , CT, USA), has been awarded a four-year, US$3.27 million award from the U.S. National Institutes of Health (NIH; Bethesda, MD, USA) to develop new magnet technology that will make magnetic resonance imaging (MRI), systems less expensive and easier to site.

In MRI, the magnet is the key part of the system that enables detailed images of tissue inside the body to help physicians and clinicians make critical diagnoses. To obtain images with such high resolution and quality, the magnet must be kept at super cool temperatures of -269 ^oC. That is only a few degrees above absolute zero and as cold as outer space. Cryogenic liquids, or liquids at ultra-low temperatures, are used today to keep the magnet this cool.

Because cryogenic liquids are used, special venting and other room specifications must be met that can make MRI systems more expensive and difficult to site. As part of this project, GE researchers are developing a cryogen-free magnet that would considerably reduce these costs and siting requirements.

"The use of cryogenic liquids limits where MRI systems can be placed today, and we want to change that so more people around the world can have access to this vital diagnostic imaging technology,” said Minfeng Xu, lead investigator on the MRI magnet project from GE Global Research. "By developing a cryogen-free magnet, we can reduce the overall size, cost, and siting requirements of new MRI systems and make them easier to site in areas where the infrastructure is not as well developed.”

The magnet GE researchers are developing will be smaller and require less wire to support an MRI scanner. The reduction in wire would also help reduce the overall cost of an MRI system. "The whole idea is to create a more highly mobile, less costly MRI system platform that delivers the same high resolution and quality of imaging for patients,” added Kathleen Amm, lab manager, electromagnetics and superconductivity.

A key strength of MRI scanners is the ability to differentiate various soft tissues inside the body. Clinicians typically use them for brain, cardiovascular, and musculoskeletal imaging as well as for imaging of the body's major organs.

The development of a lower-cost mobile MRI platform would help support GE's healthymagination vision by expanding MRI use into underserved communities worldwide. Healthymagination represents GE's focus on driving new technologies and products that reduce costs, improve quality and increase access to healthcare.

The chief objective of the program is to develop technologies that enable low-cost whole-body MRI systems that are easier to site and maintain the highest degree of image quality. With the successful development of the proposed magnet technologies, MRI systems can be realized with cost and sitability requirements comparable to today's low-cost permanent magnet systems (magnetic field of 0.2-0.35T), but with a high magnetic field (1.5-3.0T) and excellent image quality comparable to existing mainstream and premium superconducting systems.

Related Links:
GE Global Research
Healthymagination