{'fraction_non_alphanumeric': 0.009159034138218152, 'fraction_numerical': 0.0, 'mean_word_length': 5.640883977900552, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Three-Dimensional Terahertz Medical Imaging Reconstruction using Inverse Scattering Problem

Terahertz images are of great interest in allowing the image of a biological object to be achieved. The inverse scattering problem of three-dimensional terahertz medical imaging is investigated. Dielectric object of known permittivity is located in situated medium around the object and illuminated by a group of unrelated incident Terahertz waves. The scattered field is received in a plain situated behind the object. The theoretical analysis is based on the principle that the scattered electromagnetic field is function of the volume distribution of equivalent currents inside the biological object. Numerical results are given to demonstrate the capability of the inverse scattered problem algorithm. In order to test this method the image of dielectric sphere is obtain from the calculated scattered electromagnetic field. The results of scattered electromagnetic field measurements carried out on different material objects are given. Good reconstruction is obtain from measured data even the results of scattered electromagnetic field measurements carried out on different material objects are given.