Microwave radiometric imaging (MWI) for the characterisation of breast tumours

We have developed a new prototype of microwave radiometric imaging devoted to the measurement of the temperature inside a dissipative media. The main application we are looking for, is the non-invasive thermometry of human ti ssues. We obtain quite satisfactory results in the early characterisation o f breast tumours in terms of malignancy or benignity. We have, at this mome nt in progress, a clinical evaluation of patients that gives good results a t an intermediary stage. To improve the spatial resolution, we have develop ed an inversion process based on a regularisation method in the spatial fre quency domain, associated with it Deriche filter for threshold extraction. We show that this process is well suited to our problem and can be applied to clinical images for a quantitative retrieval of the temperature.