SIGNAL PROCESSING METHOD IN MAGNETIC RESONANCE SPECTROMETRIC METHOD AND DEVICE THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a pure water subtraction method for removing a side wave zone with which remaining water including a spurious signal from an external source such as overcurrent effect, drift of Bo magnetic field, and patient's motion interferes. SOLUTION: Non-suppressed and partial water suppression magnetic signal data is obtained, and low frequency water phase compensation is applied to these data. Partial suppression data in which water phase is compensated is subtracted from non-suppressed data in which water phase is compensated to obtain a pure water reference signal (that is, to offset a metabolite signal). The pure water reference signal scaled properly is subtracted from the partial suppression data to remove a spurious water signal.