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Basic RF Coils Used in Multi-channel RF Coil and Its B1 Field Distribution for Magnetic Resonance Imaging System

자기공명영상 촬영 장치에서 다채널 RF Coil에 이용되는 기본 구조 RF Coil의 B1 Field 분석

  • Kim, Yong-Gwon (Department of Radiological Science, Konyang University)
  • 김용권 (건양대학교 방사선학과)
  • Received : 2010.10.25
  • Accepted : 2010.12.17
  • Published : 2010.12.31

Abstract

RF coil is an important component of the Magnetic Resonance Imaging (MRI) system and the performance of RF coil is one of major factors for high SNR images. Sensitivity and RF field uniformity are parameters for evaluating RF coil performance. Since the B1 field is induced by RF coil, MR signal is strongly affected by RF coil structure and arrangement. In receiving MR signal, the RF coil sensitivity to MR Signal is also determined by the induced B1 field of RF coil. Therefore, the spatial distribution of B1 field must be verified. In this work, we performed computer simulation of the basic RF coil structures using Matlab and verified their sensitivity and uniformity through their B1 field distribution. This work will be useful for the advanced multi-channel RF coil design.

Keywords

Magnetic Resonance Imaging System;RF Coil;B1-field distribution;Sensitivity;Uniformity;Signal to Noise Ratio

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