Discriminant function analysis method and apparatus for disease diagnosis and screening
First Claim
1. A method for determining the presence or absence of a disease condition at a test site on a human or animal subject as a function of the potential of the electromagnetic field present in the subject which includes:
- detecting respective electrical potentials of the electromagnetic field present in said subject between each of a plurality of measurement locations located in an area of the test site and at least one reference location on the subject,comparing the respective electrical potentials so obtained to identify a high and low level potential,obtaining a differential value indicative of the difference between said high and low level potentials,comparing said differential value to a predetermined reference value to determine a relationship therebetween, andobtaining an indication of the presence or absence of a disease condition from said relationship of the differential value to the reference value.
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Abstract
A method and apparatus for determining the presence or absence of a disease condition at a test site on a human or animal subject by detecting during a test period the respective electrical potentials of the electromagnetic field present in the subject between each of a plurality of measurement locations in the area of the test site and at least one reference location. A representative potential is separately obtained for each measurement location during the test period, and these representative potentials are compared at the end of the test period to obtain relationships therebetween which are indicative of either the presence or absence of a disease condition.
70 Citations
35 Claims
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1. A method for determining the presence or absence of a disease condition at a test site on a human or animal subject as a function of the potential of the electromagnetic field present in the subject which includes:
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detecting respective electrical potentials of the electromagnetic field present in said subject between each of a plurality of measurement locations located in an area of the test site and at least one reference location on the subject, comparing the respective electrical potentials so obtained to identify a high and low level potential, obtaining a differential value indicative of the difference between said high and low level potentials, comparing said differential value to a predetermined reference value to determine a relationship therebetween, and obtaining an indication of the presence or absence of a disease condition from said relationship of the differential value to the reference value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An apparatus for disease screening or diagnosis at a potential disease site on a human or animal subject by measuring the electrical potentials which are a function of the electromagnetic field present in the subject on the skin surface of the subject in an area of said potential disease site comprising
reference electrode means adapted for contacting the skin surface of the subject at a reference location, a plurality of test electrode means adapted for contact with the skin surface of the subject at spaced locations in the area of the potential disease site, each said test electrode means operating with said reference electrode means define a test-reference electrode means combination for to detecting electrical potential of the electromagnetic field present between said reference electrode means and said test electrode means during a test period and to provide a test potential as a function thereof, analog-to-digital converter means connected to separately receive each said test potential and to provide a separate digital test signal indicative of each said test potential obtained during said test period, and processing means connected to separately receive each said separate digital test signal, said processing means operating to compare said digital test signals obtained during said test period to identify potential relationships therebetween indicative of the presence of a disease condition.
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30. A method for determining the presence or absence of a disease condition at a test site on a human or animal subject as a function of the potential of the electromagnetic field present in the subject which includes,
detecting during a test period respective electrical potentials of the electromagnetic field present in said subject between each of a plurality of measurement locations in an area of the test site and at least one reference location on the subject to obtain a separate representative potential for each said measurement location during the test period, detecting the electrical potentials of the electromagnetic field present in said subject between at least one auxiliary location remote from said test site and said reference location to obtain auxiliary potentials during said test period, comparing said separate representative potentials at the end of the test period to obtain therefrom relationships which are indicative of either the presence or absence of a disease condition, and comparing said auxiliary potentials with said separate representative potentials to obtain therefrom auxiliary relationships which are indicative of either the presence or absence of a disease condition if the relationship between said representative potentials has first indicated the presence of a disease condition.
Specification