波谱学杂志2009，Vol.26Issue(4)：476-483,8.
磁共振成像的正交线圈数字合成方法研究
Digital Combination of Signals from Quadrature MRI Receiver Coils
摘要
Abstract
Quadrature receiver coils are often used in magnetic resonance imaging. However, the imbalance of the detection sensitivity between the I-channel and the Q-channel in these coils can affect the overall signal to noise ratio (SNR) of the images obtained. In order to solve this imbalance problem, we propose a digital method for combining the signals from the two channels of the quadrature coils, in which the weighted coefficients of the I and Q channels are determined dynamically in the K-space. It was demonstrated that optimal SNR can be obtained with the present method.关键词
磁共振成像(MRI)/接收通道/正交线圈/数字合成Key words
MRI/ receiving channel/ quadrature coil/ digital combination分类
医药卫生引用本文复制引用
宁瑞鹏,李鲠颖..磁共振成像的正交线圈数字合成方法研究[J].波谱学杂志,2009,26(4):476-483,8.基金项目
上海市科委资助项目 (07DZ22937, 08DZ1900702) （07DZ22937, 08DZ1900702）
上海市磁共振重点实验室开放课题 (071221). （071221）
