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      • Dept. of Electrical and Electronics Engineering - Master's degree
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      •   BUIR Home
      • University Library
      • Bilkent Theses
      • Theses - Department of Electrical and Electronics Engineering
      • Dept. of Electrical and Electronics Engineering - Master's degree
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      Safety of metallic implants in magnetic resonance imaging

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      Author
      Ferhanoğlu, Onur
      Advisor
      Atalar, Ergin
      Date
      2005
      Publisher
      Bilkent University
      Language
      English
      Type
      Thesis
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      Abstract
      Magnetic Resonance Imaging (MRI) is safe only if we take safety precautions. In the presence of a metallic implant inside the body, three types of magnetic fields encountered in MRI (Static magnetic field, radiofrequency field, gradient field) may become the sources of safety problems. In this thesis, temperature increase created by a pacemaker under MRI is investigated. Electromagnetic simulations are performed, in-vivo, phantom experiments are conducted and finally bioheat equation is solved to find the corresponding temperature increase. Using this temperature increase the input power can be limited to ensure safe scans. MRI compatible lead design is the essential innovation of this thesis which is directly applicable to any kind of metallic, wire shaped interventional MRI device.
      Keywords
      Magnetic Resonance Imaging
      Metallic implant
      Pacemaker
      Bioheat transfer
      Interventional MRI
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      http://hdl.handle.net/11693/29752
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      • Dept. of Electrical and Electronics Engineering - Master's degree 566

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