1. A method for producing an image of a subject with a magnetic resonance imaging (MRI) system, the steps comprising: a) performing a pulse sequence with the MRI system to produce transverse magnetization in the subject that emits NMR signals; b) receiving the NMR signals simultaneously with multiple coils and associated receive channels; c) preparing an inverse image from the received NMR signals; and d) reconstructing an image from the inverse image using an imaging inverse operator; wherein the imaging inverse operator is based on a forward model that accounts for the NMR signals received by each coil and associated receive channel.