Measurements of radiation induced currents in RF coil conductors

  • Author / Creator
    Ghila, Andrei Dorin
  • 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.

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  • Graduation date
  • Type of Item
  • Degree
    Master of Science
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    This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.