Abstract #4279

The Quantitative Comparison of Doing Eddy Current Correction Before and After Combination for 1H MRS Using Phased Array Coils with LCModel

Lung-Sheng Chang¹, Cheng-Wen Ko¹, Shang-Yueh Tsai², Tzu-Chao Chuang³, Cheng-Yun Hsu¹

¹Dept. of Computer Science and Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan; ²Dept. of Electrical Engineering, Chang Gung University, Tao-Yuan, Taiwan; ³Dept. of Electrical Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan

The purpose of this study is to demonstrate the importance of doing eddy current correction for each coil element before combination for phased array MRS data, and validate the reliability and accuracy in terms of SNR and absolute concentrations of MRS in vivo. Our result shows that there is no difference in terms of SNR for the spectra doing eddy current correction before and after combination. However, doing eddy current correction before combination of each channel data will improve the accuracy of absolute concentrations and benefit the multi-center comparison in clinical applications.