Abstract
The authors are developing a technique for conducting measurements inside the human body by applying a weak electric field at a radio frequency (RF). Low RF power is fed to a small antenna, and a similar antenna located 15–50 cm away measures the electric field intensity. Although the resolution of the method is low, it is simple, safe, cost-effective, and able to be used for biomedical applications. One of the technical issues suggested by the authors' previous studies was that the signal pattern acquired from measurement of a human body was essentially different from that acquired from a phantom. To trace the causes of this difference, the accuracy of the phase measurements was improved. This paper describes the new experimental system that can measure the signal phase and amplitude and reports the results of experiments measuring a human body and a phantom. The results were analyzed and then discussed in terms of their contribution to the phase measurement.
Highlights
The authors are developing a technique for conducting measurements inside the human body by applying a weak electric field at radio frequency (RF), typically 1–60 MHz [1, 2]
Technological advancements have led to the development of high-level diagnostic techniques, including X-ray computed tomography (X-ray CT), magnetic resonance imaging (MRI), and positron emission tomography (PET), which have contributed greatly to medical care and welfare
The authors started to apply the radio imaging method, which was originally used for geological survey (RIM), to the measurement of the human body [2, 7, 8]
Summary
Technological advancements have led to the development of high-level diagnostic techniques, including X-ray computed tomography (X-ray CT), magnetic resonance imaging (MRI), and positron emission tomography (PET), which have contributed greatly to medical care and welfare. Such high-level care and large-scale medical equipment represent financial burdens to taxpayers in most developed countries. Due to these costs, people in developing countries rarely benefit from these high-level diagnostic techniques. The evolved technique was classified as an electric field method [9, 10]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
