Automatically generating one medical imaging modality from another is known as medical image translation, and has numerous interesting applications. This paper presents an interpretable generative modelling approach to medical image translation. By allowing a common model for group-wise normalisation and segmentation of brain scans to handle missing data, the model allows for predicting entirely missing modalities from one, or a few, MR contrasts. Furthermore, the model can be trained on a fairly small number of subjects. The proposed model is validated on three clinically relevant scenarios. Results appear promising and show that a principled, probabilistic model of the relationship between multi-channel signal intensities can be used to infer missing modalities -- both MR contrasts and CT images.
@article{arxiv.1908.05926,
title = {Empirical Bayesian Mixture Models for Medical Image Translation},
author = {Mikael Brudfors and John Ashburner and Parashkev Nachev and Yael Balbastre},
journal= {arXiv preprint arXiv:1908.05926},
year = {2020}
}
Comments
Accepted to the Simulation and Synthesis in Medical Imaging (SASHIMI) workshop at MICCAI 2019