Safety Evaluation of MRI Magnetic Field Leakage from Different Configurations

Authors

Yap Siew Hong , Siti Aisyah Mohd Nordin , Mohd Mustafa Awang Kechik , Muhammad Khalis Abdul Karim , Zarina Ramli , Hussien Baqjiah , Soo Kien Chen , Kean Pah Lim , Muhammad Kashfi Shabdin , Aliah Nursyahirah Kamarudin , Aris Doyan , Arebat Ryad Alhadei Mohamed , Abdul Halim Shaari

Published:

2025-04-27

Issue:

Vol. 1 No. 1 (2025): April

Keywords:

Magnetic field leakage, Magnetic field strength, Static magnetic fields

Articles

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How to Cite

Hong, Y. S., Nordin, S. A. M., Kechik, M. M. A., Karim, M. K. A., Ramli, Z., Baqjiah, H., … Shaari, A. H. (2025). Safety Evaluation of MRI Magnetic Field Leakage from Different Configurations . Journal of Material Science and Radiation, 1(1), 7–14. Retrieved from https://journals.balaipublikasi.id/index.php/jmsr/article/view/360

Abstract

Magnetic Resonance Imaging (MRI) systems generate intense static magnetic fields (SMFs), with fringe field propagation varying considerably between installations, even among scanners that operate at the same nominal field strength. This study investigates the safety implications of magnetic field leakage by quantifying and comparing SMFs distributions surrounding multiple MRI facilities. The assessment covers 1.5 T MRI scanners at Hospital Canselor Tuanku Muhriz (HCTM) and Hospital Pakar Kanak-Kanak UKM (HPKK), and 3 T scanners at the National Cancer Institute / Institut Kanser Negara (IKN), Pusat Pengimejan Diagnostik Nuklear (PPDN), and HCTM. Magnetic field intensities were recorded using a Magnetometer HP-01 provided by the Medical Radiation Surveillance Division (BKRP), Ministry of Health Malaysia, and visualised using MATLAB to model spatial field dispersion. Statistical tools, including Box and Whisker plots and the Shapiro-Wilk test, were employed to analyse magnetic field uniformity and containment. Specifically, 1.5 T scanners at HCTM and HPKK, and 3.0 T scanners at IKN, PPDN, and HCTM, each displayed distinct SMFs propagation profiles. These findings align with earlier studies conducted in Italy, confirming that magnetic field distributions near the magnet core can differ substantially based on scanner model and site-specific installation variables—even when B₀ remains constant. Notably, HCTM exhibited superior SMFs confinement, with lower standard deviation and a narrower distribution range, suggesting better shielding design. This enhances occupational safety in zones where radiographers frequently operate. The results reinforce the need for site-specific SMFs assessments and optimised shielding practices to maintain safe MRI environments for both staff and patients

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Author Biographies

Yap Siew Hong, Universiti Putra Malaysia

Siti Aisyah Mohd Nordin, Universiti Putra Malaysia

Mohd Mustafa Awang Kechik, Universiti Putra Malaysia

Muhammad Khalis Abdul Karim, Universiti Putra Malaysia

Zarina Ramli, Ministry of Health Malaysia, Putrajaya

Hussien Baqjiah, Dezhou University, Shandong

Soo Kien Chen, Universiti Putra Malaysia

Kean Pah Lim, Universiti Putra Malaysia

Muhammad Kashfi Shabdin, Universiti Putra Malaysia

Aliah Nursyahirah Kamarudin, Universiti Putra Malaysia

Aris Doyan, University of Mataram

Arebat Ryad Alhadei Mohamed, Universiti Putra Malaysia

Abdul Halim Shaari, Universiti Putra Malaysia

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Copyright (c) 2025 Yap Siew Hong, Siti Aisyah Mohd Nordin, Mohd Mustafa Awang Kechik, Muhammad Khalis Abdul Karim, Zarina Ramli, Hussien Baqjiah, Soo Kien Chen, Kean Pah Lim, Muhammad Kashfi Shabdin, Aliah Nursyahirah Kamarudin, Aris Doyan, Arebat Ryad Alhadei Mohamed, Abdul Halim Shaari

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