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Permanent link (DOI): https://doi.org/10.7939/R3461J

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Measurements of radiation induced currents in RF coil conductors Open Access

Descriptions

Other title
Subject/Keyword
RF Coils
Linac-MR
Skin dose
Radiation induced current
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Ghila, Andrei Dorin
Supervisor and department
Fallone, B Gino (Oncology)
Rathee, Satyapal (Oncology)
Examining committee member and department
Fallone, B Gino (Oncology)
Robinson, Don (Oncology)
Rathee, Satyapal (Oncology)
Marchand, Richard (Physics)
Department
Department of Oncology
Specialization

Date accepted
2011-09-29T03:20:47Z
Graduation date
2011-11
Degree
Master of Science
Degree level
Master's
Abstract
The integration of a clinical linear accelerator (linac) with a magnetic resonance imager (MRI) will offer real time images during treatment, making tumor tracking possible. One of the challenges of the integration is removing any mutual interference between the two systems. Methods of removing or significantly reducing the radiation induced current (RIC) that appears in the MRI’s radio frequency (RF) coils when they are under the linac’s direct pulsed irradiation are investigated in this thesis. The results indicate that by using the proper combination of coil conductor and buildup the RIC can be reduced to negligible levels. This was demonstrated on a custom built surface RF coil as well. A preliminary investigation of how having an RF coil with or without buildup in the treatment beam will affect the patient’s skin dose was also done. Future measurements to determine whether the measured RIC in RF coils significantly affects the quality of the acquired images are suggested.
Language
English
DOI
doi:10.7939/R3461J
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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