EFFECTIVE ARRANGEMENT OF OPTIMUM NUMBER OF TEM COILS FOR THE IMPROVEMENT OF B1 FIELD HOMOGENEITY AROUND THE HEAD OF HUMAN PHANTOM AT 7 TESLA

Abstract

Abstract- The radio frequency (RF) coil, often ignored, is an important part of Magnetic Resonance Imaging. It is able to perform most important function in high-field for Magnetic Resonance Imaging (MRI) to obtain higher sensitivity for human brain imaging and hence generating clear images. In this paper, the performance of different coil is compared based on number of channel and the generation of homogeneous B1 field in the head. The number of channel (4, 6, 8, 10 and 12) of Tx/Rx coil will be varied in order to compare SNR, signal intensity (SI) and B1 field homogeneity utilizing B1 mapping sequence. The simulation will be performed on human head phantom by using REMCOM XFDTD. This paper compares different number of channels and finally proposes a reliable TEM coil of optimum number for imaging brain at ultra-high field.