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Abstract #4287

A Component Projection Algorithm for eliminating the interference of Pilot Tone Signal

Qiong Zhang1, Yong Xiao Zhang2, and Yulong Liu3
1DL, Siemens, Shenzhen, China, 2MR Collaborations, Siemens Healthcare Ltd., Shenzhen, China, 3Beijing Institute of Technology, BeiJing, China

In this work, we provided a component-projection algorithm for Pilot Tone (PT) signal anti-jamming. The interference of a PT signal induced by the MR measurement can be effectively mitigated with the following procedure: the original PT signals received by the array coil are orthogonally transformed into the Eigen Space of interference signal, and the principle component of interference Eigen Space is subsequently discarded to maximally suppress the interference before the remaining components are projected into a predefined direction to combine the final PT navigator signal. Phantom and volunteer experiments demonstrated that the technique can effectively reduce the interference during scanning.

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