IJE TRANSACTIONS C: Aspects Vol. 32, No. 3 (March 2019) 393-399   

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M. Shiravi, B. Ganji and A. Shiravi
( Received: September 28, 2018 – Accepted in Revised Form: March 07, 2019 )

Abstract    One of the main challenges in developing magnetic resonance imaging (MRI) systems is to create a static coil that needs to generate magnetic field density along with the characteristics of optimal homogeneity and magnitude size. To do this, two N42 Block PMs are used and the iron core is designed and optimized in accordance with the dimensions of PM pieces using ANSYS Maxwell software. Then, all iron parts are lathed, the yoke pieces and pole spacers are welded. In addition, PM and pole pieces are installed. Finally, measurement is done by Lutron to evaluate the static coil performance.


Keywords    Magnetic Resonance Imaging; Permanent Magnet; Static Coil; Inhomogeneity



کی از چالش‌های اصلی در توسعه سیستم‌های MRI ساخت یک کویل استاتیکی برای تولید چگالی میدان مغناطیسی با ویژگی‌های یکنواختی و اندازه دامنه بهینه می‌باشد. برای این منظور، دو قطعه مکعبی شکل آهنربا از نوع N42 استفاده می‌شود. در ادامه قطعات آهنی بوسیله CNC تراشکاری می‌شود و قطعات یوغ و ته قطب‌ها جوشکاری می‌گردد. سپس قطعات سرقطب و آهنربا نصب می‌شود. در نهایت، برای ارزیابی عملکرد کویل استاتیکی، میدان مغناطیسی بوسیله تسلامتر Lutron اندازه‌گیری می‌گردد.


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