Wideband dielectric properties reconstruction from MR acquisitions

Abstract

The growing use and development of medical techniques based on the application of electromagnetic fields (EMF) has increased the necessity of an accurate reconstruction of the dielectric properties of human tissues. These properties in fact represent the response of the biological system when it is exposed to an external EMF. Given the complexity and the heterogeneity of human tissues, it is required to use in-vivo data that are specific for each subject. Since traditional techniques are not able to reach this aim, an alternative method based on MR is here considered.In this work a model is proposed for the reconstruction of dielectric properties of biological tissues from MR acquisitions. The proposed dielectric model is wideband, specific, and applicable in vivo and can be used for those medical techniques that need a precise dielectric characterization of the subjects.