Multiple orthogonal slice processing and separation to obtain temperature information for mri thermometry

Abstract

A method includes decomposing, for each of a plurality of orthogonal slices, a set of PRF baseline images for the orthogonal slice into a set of baseline image features for the orthogonal slice; acquiring, using a magnetic imaging resonance (MRI) scanner of a MRI system based on a RF excitation pulse sequence for each of the plurality of orthogonal slices, a combined multi-encoded PRF treatment image; subtracting a weighted sum of the sets of baseline image features from the combined multi-encoded PRF treatment image to obtain a combined treatment-specific temperature information of the imaging region that provides multi-orthogonal slice temperature information associated with or resulting from treatment or thermal ablation of the imaging region of the patient after subtraction or removal of the baseline image features; and processing the combined treatment-specific temperature information to obtain slice-specific treatment-specific temperature information for each of the plurality of orthogonal slices.