NDLI: Magnetic field probes for time-domain monitoring of RF exposure within tissue-mimicking materials for MRI-compatible medical device testing

Content Provider	IET Digital Library
Author	Attaran, Ali Handler, William B. Menon, Ravi S. Chronik, Blaine A.
Abstract	A new RF B/H field probe for time-domain monitoring of RF electromagnetic-radiated exposure during medical device testing inside the lossy tissue-mimicking material is presented. The probe was tuned and matched for a centre frequency of 127.6 MHz to optimise the response for testing within typical 3T MRI scanners or RF exposure platforms. A 5 mm radius loop was chosen as a trade-off between spatial resolution and sensitivity and fabricated on a double-sided FR4 PCB. In the presented scheme, a low-noise RF amplifier was employed to reduce the sensitivity of the probe to induce voltage on the transmission lines and to improve accuracy. The implemented probe was found to provide acceptable spatial resolution and sensitivity for reliable B/H field mapping for this application.
Starting Page	16
Ending Page	18
Page Count	3
ISSN	00135194
Volume Number	54
e-ISSN	1350911X
Issue Number	Issue 1, Jan (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/54/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2017.3568
Journal	Electronics Letters
Publisher Date	2017-11-24
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	3T MRI Scanner Amplifiers Biological Tissues Biology And Medical Computing Biomedical Magnetic Resonance Imaging Biomedical MRI Biomedical Transducers Computer Vision And Image Processing Technique Double-sided FR4 PCB Frequency 127.6 MHz Image Resolution Image Scanners Image Sonsor Lossy Tissue-mimicking Material Low Noise Amplifier Low-noise RF Amplifier Magnetic Field Measurement Magnetic Field Probe Magnetic Sonsor Magnetic Variables Measurement Measurement of Basic Electric And Magnetic Variables Medical Magnetic Resonance Imaging And Spectroscopy Microwave Circuit And Device MRI-compatible Medical Device Testing Optical, Image And Video Signal Processing Patient Diagnostic Method And Instrumentation Printed Circuit Radiofrequency Amplifiers Radius 5 Mm RF B-H Field Probe RF Electromagnetic-radiated Exposure Spectroscopy Time Domain Analysis Time-domain Monitoring Transmission Line
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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