Surgery – Diagnostic testing – Measuring electrical impedance or conductance of body portion
Patent
1999-04-29
2000-09-19
Jeffery, John A.
Surgery
Diagnostic testing
Measuring electrical impedance or conductance of body portion
A61B 5053
Patent
active
061225444
ABSTRACT:
A method and apparatus for screening, sensing, or diagnosing disease states by obtaining a plurality of electrical impedance data measurements in organized patterns from two anatomically homologous body regions, one of which may be affected by disease. One subset of the data so obtained is processed and analyzed after structuring the data values as elements of an n.times.n impedance matrix, and deriving from these matrices their eigenvalues and eigenvectors. The matrices and their derivatives are then related by their characteristics to normal or disease states.
REFERENCES:
patent: 4291708 (1981-09-01), Frei et al.
patent: 4407300 (1983-10-01), Davis
patent: 4458694 (1984-07-01), Sollish et al.
patent: 4486835 (1984-12-01), Bai et al.
patent: 4537203 (1985-08-01), Machida
patent: 4539640 (1985-09-01), Fry et al.
patent: 4557271 (1985-12-01), Stoller et al.
patent: 4583549 (1986-04-01), Manoli
patent: 4617939 (1986-10-01), Brown et al.
patent: 4688580 (1987-08-01), Ko et al.
patent: 4763660 (1988-08-01), Kroll et al.
patent: 4942880 (1990-07-01), Slovak
patent: 5143079 (1992-09-01), Frei et al.
patent: 5311878 (1994-05-01), Brown et al.
patent: 5465730 (1995-11-01), Zadehoochak et al.
patent: 5544662 (1996-08-01), Saulnier et al.
patent: 5588429 (1996-12-01), Isaacson et al.
patent: 5746214 (1998-05-01), Brown et al.
patent: 5807251 (1998-09-01), Wang et al.
patent: 5810742 (1998-09-01), Pearlman
patent: 5919142 (1999-07-01), Boone et al.
Pethig, R., and D.B. Kell. The Passive Electrical of Biological Systems: Their Significance in Physiology, Biophysics and Biotechnology. Phys. Med. Biol. 32:933-970, 1987.
Chaudhary, S.S., R.KI. Mishra, A. Swarup, and J.M. Thomas. Dielectric Properties of Normal & Malignant Human Breast Tissues at Radiowave and Microwave Frequencies. Indian J. Biochem. Biophys. 21:76-79, 1984.
Surowiec, A.J., S.S. Stuchly, J.R. Barr, and A. Swarup. Dielectric Properties of Breast Carcinoma and the Surrounding Tissues. IEEE Trans. Biomed. Engng. 35:257-263, 1988.
Jossinet, J., C. Fourcade, and M. Schmitt. A Study for Breast Imaging with a Circular Array of Impedance Electrodes. Proc. Vth Int. Conf. Bioelectrical Impedance, 1981, Tokyo, Japan, 83-86.
Jossinet, J.C., and E. Mbock-Mbock. Technical Implementation and Evaluation of a Bioelectrical Breast Scanner. Proc. 10.sup.th Int. Conf. IEEE Engng. Med. Biol., 1988, New Orleans, USA (Imped. Imaging II).
Skidmore, R., J.M. Evans, D. Jenkins, and P.N.T. Wells. A Data Collection System for Gathering Electrical Impedance Measurements from the Human Breast. Clin. Phys. Physio. Meas. 8:99-102, 1987.
Piperno, G., E.H. Frei, and M. Moshitzky. Breast Cancer Screening by Impedance Measurements. Front. Med. Biol. Engng. 2:111-117, 1990.
Man, B., B.D. Sollish, M. Moshitzky, Y. Choukron, and E.H. Frei. Results of Preclinical Tests for Breast Cancer Detection by Dielectric Measurements. XII Int. Conf. Med. Biol. Engng. 1979, Jerusalem, Israel. Springer Int., Berlin, 1980, 30.4.
Sollish, B.D., E.H. Frei, E. Hammerman, S.B. Lang and M. Moshitzky. Microprocessor-assisted Screening Techniques. Isr. J. Med. Sci. 17:859-864, 1981.
Devinsky Paul
Jeffery John A.
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