Title of article :
Static Coil Design Considerations for the Magnetic Resonance Imaging
Author/Authors :
Shiravi, M Department of Electrical & Computer Engineering - University of Kashan, Kashan, Iran , Ganji, B Department of Electrical & Computer Engineering - University of Kashan, Kashan, Iran , Shiravi, A Department of Radiology - Faculty of Medicine - Tehran University of Medical Sciences, Tehran, Iran
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.
Farsi abstract :
يكي از چالش هاي اصلي در توسعه سيستم هاي MRI ساخت يك كويل استاتيكي براي توليد چگالي ميدان مغناطيسي با
ويژگيهاي يكنواختي و اندازه دامنه بهينه ميباشد. براي اين منظور، دو قطعه مكعبي شكل آهنربا از نوع N42 استفاده مي
شود. در ادامه قطعات آهني بوسيله CNC تراشكاري مي شود و قطعات يوغ و ته قطب ها جوشكاري مي گردد. سپس قطعات
سرقطب و آهنربا نصب مي شود. در نهايت، براي ارزيابي عملكرد كويل استاتيكي، ميدان مغناطيسي بوسيله تسلامتر Lutron
اندازه گيري مي گردد
Keywords :
Inhomogeneity , Static Coil , Permanent Magnet , Magnetic resonance Imaging
