Dixon-type water / fat separation MRI using high SNR in-phase images and low SNR at least partially out-of-phase images

摘要

The present invention relates to a method for Dickson MR imaging. The method includes generating a first imaging sequence that generates a first MR echo signal at a first echo time, wherein the MR signal emitted from water protons and fat for the first MR echo signal The contribution from the MR signal emitted from the protons is essentially in phase, obtaining the first MR echo signal at a first signal-to-noise ratio, and at a second echo time Generating a second imaging sequence that generates two MR echo signals, the contribution of MR signals emitted from water protons and MR signals emitted from fat protons to the second MR echo signals. At least partially out of phase with the second MR echo signal at a second signal-to-noise ratio different from the first signal-to-noise ratio. A step of Tokusuru, comprising the steps of reconstructing an MR image from the first and second MR echo signal, the signal contributions from water protons and fat protons are separated, and a step. The present invention further relates to an MR apparatus and a computer program executed on the MR apparatus.