RF Systems
Engineering
Hiroyuki Fujita, Lawrence W. Wald, Organizers
Saturday, 6 May, 08:30 - 18:15
Overview:
This one-day course will provide the imaging physicist with the background,
theory and methodology needed to understand the design and validation of the
components of the RF system. The course will cover basic theory, function and
characterization of the coils, trap and detuning circuits, preamplifiers, and TR
switches which work together to form the backbone of the imaging experiment. It
will provide practical advice on the methods used to measure, adjust and tune
these components and will also cover the interaction of the electromagnetic
fields with the body and SAR calculations.
Educational Objectives:
Upon completion of this course, participants should be able to:
• Explain the purpose and relevant performance measures for the RF chain used in
the MRI scanner;
• Identify the principal components of the RF chain of the MRI scanner hardware
and how they are designed;
• Describe the basic principles of RF electronics, the properties of RF
components and devices, and the measurement tools used to characterize them;
• Describe the function and methods of characterizing preamplifiers, baluns and
traps;
• Explain the methods for actively detuning an RF transmitter and receive coil;
• Identify the type of RF coil circuits for volume and surface coil arrays and
how they are designed from the point of view of circuits;
• Explain the computational electromagnetics modeling methods to simulate RF
coils; and
• Explain how to compute SAR parameters for a coil and test for other aspects of
patient safety.
Audience Description:
This course is designed for the Ph.D.-level imaging scientist or clinician who
does not necessarily have a background in RF engineering. We are aiming at the
imaging scientist or clinician who wishes to understand more about the
increasingly complex nature of the RF system in order to make better decisions
about its limitations and applications; the imaging physicist who wishes to
construct and test components of the RF chain needed for his or her specialized
experiment; the postdoctoral level researcher interested in entering the
sub-field of RF engineering for MRI applications; and scientists and clinicians
with experience in MRI but who do not have a detailed education in RF
engineering and its application to MR.
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