Study of the electrical impedance scanning

Electrical transimpedance scanning is a new modality of imaging based on differences in electrical properties of tissues, used in the diagnosis of breast cancer. It is an extremely promising technique to complement other conventional image examinations. Areas presenting abnormalities and/or malignant neoplasia evidence exhibit conductive changes that cause an impedance variation between cancerous and healthy tissues. Since there are very few commercial devices available that use the new electrical transimpedance scanning technology, this paper describers the design of a prototype using this technique aiming to contribute to the evaluation of the parameters involved.