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Abstract #3476

An initial imaging test of a portable 7 T cryogen-free MRI system

Yaohui Wang1, Wenhui Yang1, Shufeng Wei1, Shunzhong Chen1, Hui Wang1, Jinshui Sun1, Wanshuo Sun1, Feng Liu2, and Qiuliang Wang1
1Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China, 2School of Electrical Engineering and Computer Science, The University of Queensland, Brisbane, Australia

Synopsis

Keywords: Magnets (B0), Magnets (B0)

Motivation: The high cost, large footprint, and complex maintenance of Ultrahigh-field MRI make it less accessible to many researchers.

Goal(s): Develop an affordable, lightweight, and easily maintained 7 T MRI system using cryogen-free technology for scientific research and industrial applications.

Approach: A small-bore superconducting magnet with nested thin gradient assembly and thin RF coil are integrated into an MRI system with operable clear space.

Results: The magnet weight is only 304 kg, with dimensions of 58 cm in length and 65 cm in height, allowing for flexible installation in the lab. Initial imaging generates high-quality images with a resolution of less than 50 μm.

Impact: The ultrahigh-field, cryogen-free, portable, high-resolution MRI system will be an economical tool for researchers engaged in ultrahigh-field related studies. In the future, advanced spectroscopic and imaging functions will enable a broader range of scientific explorations.

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