One-Channel Phased-Array Quadrature RF Coil for Spine Magnetic Resonance Imaging

척추 MRI를 위한 One-Channel Phased-Array Quadrature RF 코일

  • 양윤정 (고려대학교 전자 및 정보공학부) ;
  • 김선경 (고려대학교 전자 및 정보공학부, 광운대학교 전기공학과)
  • Published : 1998.04.01

Abstract

A new one-channel phased-array quadrature RF coil is developed for spine MR imaging. Quadrature RF coils for MRI have been used to improve the signal-to-noise ratio (SNR) by$"\squt{2}"$ using two orthogonal RF coils in combination. More recently, the phased-array RF coil has been proposed for more improvement of SNR by using an array of reduced-size RF coil elements. Two schemes proposed for the new phased-array quadrature RF coil are:(1) Proper overlapping of two quadrature RF coils thus removing the mutual inductance and (2) Attaching preamplifiers right after the coil section and combining the signal with proper phase delays. The coil has been implemented for receive-only mode, and tested by phantom and volunteer imaging. The experimental results show the utility of the proposed RF coil.d RF coil.

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