Approaches in cooling of resistive coil-based low-field Magnetic Resonance Imaging (MRI) systems for application in low resource settings

BMC Biomedical Engineering

Steven J. Schiff¹  Johnes Obungoloch²  Faith Natukunda²  Theodora M. Twongyirwe³ 

[1]Centre for Neural Engineering, Departments of Engineering Science and Mechanics, Neurosurgery, and Physics, The Pennsylvania State University

[2]Department of Biomedical Engineering, Mbarara University of Science and Technology

[3]Department of Mechanical Engineering, Mbarara University of Science and Technology

关键词: Low-field MRI;    Resistive;    Cooling;    Temperature;    Power dissipation;   

DOI  :  10.1186/s42490-021-00048-6

来源: DOAJ

【 摘 要 】

Abstract Magnetic Resonance Imaging (MRI), a non-invasive method for the diagnosis of diverse health conditions has experienced growing popularity over other imaging modalities like ultrasound and Computer Tomography. Initially, proof-of-concept and earlier MRI systems were based on resistive and permanent magnet technology. However, superconducting magnets have long held monopoly of the market for MRI systems with their high-field (HF) strength capability, although they present high construction, installation, and siting requirements. Such stringent prerequisites restrict their availability and use in low-middle income countries. Resistive coil-based magnet, albeit low-field (LF) in capacity, represent a plausible boost for the availability and use of MRI systems in resource constrained settings. These systems are characterized by low costs coupled with substantial image quality for diagnosis of some conditions such as hydrocephalus common is such regions. However, the nature of resistive coils causes them to heat up during operation, thus necessitating a dedicated cooling system to improve image quality and enhance system longevity. This paper explores a range of cooling methods as have been applied to resistive magnets, citing their pros and cons and areas for improvement.

【 授权许可】

Unknown