METHOD OF PARALLEL MAGNETIC RESONANCE IMAGE PROCESSING

摘要

A method, an apparatus, and a computer-implemented system are provided for performing reconstruction of an image of a subject within a magnetic resonance imaging (MRI) machine having a plurality of receiver coils. In particular, parallel magnetic resonance imaging (pMRI) reconstruction is performed by receiving pMRI signal data comprising digitised samples acquired from the receiver coils of the MRI machine. A dynamic input-output system of a pMRI detection process of the MRI machine is constructed, wherein the model embodies a plurality of estimated spatial sensitivity functions corresponding with each of the plurality of receiver coils. An inverse model is determined, which corresponds with the system model, using an optimisation method which is adapted to minimise a measure of reconstruction error. More particularly, the measure of reconstruction error accounts for accuracy of image reconstruction by the inverse model in the absence of additive noise and estimation error, in combination with amplification by the inverse model of additive noise and estimation error. An image of the subject is reconstructed by applying the inverse model to the pMRI signal data. A reconstructed image output may then be provided to a user.