전기학회논문지 (The Transactions of The Korean Institute of Electrical Engineers)

  • 제65권12호
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  • Pages.2019-2022
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  • 2016
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  • 1975-8359(pISSN)
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  • 2287-4364(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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자기공명영상시스템에서의 의료용 리드선의 전자기적 호환 연구

Electromagnetic Compatibility Study of a Medical Lead for MRI Systems

  • 투고 : 2016.10.07
  • 심사 : 2016.11.27
  • 발행 : 2016.12.01
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초록

In the presence of an electrically conducting medical lead, radio frequency (RF) coils in magnetic resonance imaging (MRI) systems may concentrate the RF energy and cause tissue heating near the lead. A novel design for a medical lead to reduce this heating by introducing pins in the lead is presented. Peak 10 g specific absorption rate (SAR) in heart tissue, an indicator of heating, was calculated and compared for both conventional (Medtronic) lead design and our proposed design. Remcom XFdtd software was used to calculate the peak SAR distribution in a realistic model of the human body. The model contained a medical lead that was exposed to RF magnetic fields at 64 MHz (1.5 T), 128 MHz (3 T) and 300 MHz (7 T) using a model of an MR birdcage body coil. The proposed design of adding pins to the medical lead can significantly reduce the heating from different MRI systems.

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참고문헌

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