Patent ID: 7457660

Claim:
A system for diagnosing the possibility of disease in one of a first body part and a second substantially similar body part by impedance measurements, the system comprising: a first body part module for injecting a first current into the first body part and for receiving a corresponding first voltage signal; a second body part module for injecting a second current into the second body part and for receiving a corresponding second voltage signal; a correction module for obtaining a first correction factor for the first body part and a second correction factor for the second body part, the first and second correction factors accounting for impedances inherent in non-body part sources, the correction module including a magnitude correction module for calculating first and second magnitude correction factors, and a phase correction module for calculating first and second phase correction factors, where the first correction factor is composed of the first magnitude correction factor and the first phase correction factor, and where the second correction factor is composed of the second magnitude correction factor and the second phase correction factor; and an impedance module for calculating a first impedance from the first current, the first voltage signal and the first correction factor, and for calculating a second impedance from the second current, the second voltage signal and the second correction factor, wherein the first and second impedances are used to diagnose the possibility of disease.