Title :
The feasibility of Hall effect imaging in humans
Author :
Wen, Han ; Bennett, Eric
Author_Institution :
Lab. of Cardiac Energetics, Nat. Heart, Lung & Blood Inst., Bethesda, MD, USA
Abstract :
Hall effect imaging is a new technique for mapping the electrical properties of a sample non-invasively. Its principle has been demonstrated with two and three-dimensional imaging of phantoms and biological samples. This paper addresses the potential of this technique for diagnostic imaging of the human body, based on experimental data and theoretical models of this technique developed over the past few years. The analysis is applicable to complex biological samples in general. The arguments are given at the basic physics level, so that the conclusion is independent of current technology status. These arguments are corroborated with imaging experiments of an aorta sample. The conclusion is that Hall effect imaging is not suited for quantifying the electrical constants in complex biological systems. Although this technique is able to produce detailed images that qualitatively reflect the electrical heterogeneity of a tissue sample, quantitative measurements of electrical constants are not practical for complex biological systems
Keywords :
Hall effect transducers; bioelectric phenomena; biological tissues; biomedical electrodes; biomedical transducers; biomedical ultrasonics; blood vessels; ultrasonic transducers; Hall effect imaging; aorta sample; biological samples; complex biological samples; diagnostic imaging; electrical constants; electrical heterogeneity; electrical properties; human body; humans; phantoms; three-dimensional imaging; tissue sample; two-dimensional imaging; Acoustic imaging; Acoustic transducers; Biological system modeling; Biological systems; Biological tissues; Electrodes; Hall effect; Humans; Physics; Voltage;
Conference_Titel :
Ultrasonics Symposium, 2000 IEEE
Conference_Location :
San Juan
Print_ISBN :
0-7803-6365-5
DOI :
10.1109/ULTSYM.2000.921634