Method and system for non-invasive measurements in a human body
First Claim
1. A method for use in non-invasive measurements in a patient'"'"'s body, the method comprising:
- (a) creating a condition of artificial blood kinetics at a measurement location in a patient'"'"'s blood perfused fleshy medium and maintaining this condition for a certain time period;
(b) applying an external electromagnetic field to the measurement location while under said condition of artificial blood kinetics;
(c) detecting a time response of the medium from at least a portion of the measurement location to said external electromagnetic field, and generating measured data indicative of time evolutions of the response of the medium over at least a part of said certain time period;
the response to said external electromagnetic field including at least one of the following;
an acoustic response to illuminating incident light having a wavelength in a range where the scattering properties of blood are sensitive to light, and an impedance of the portion of the medium.
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Accused Products
Abstract
A method and system are presented for use in non-invasive measurements in a patient'"'"'s body. A condition of artificial blood kinetics is created at a measurement location in a patient'"'"'s blood perfused fleshy medium, and this condition is maintained for a certain time period. An external electromagnetic field is applied to the measurement location while under the condition of artificial blood kinetics. A time variation of a response of the blood perfused fleshy medium to this external electromagnetic field is detected, and measured data indicative thereof is generated. The response of the medium can be a photo-acoustic signal obtained in response to incident light, and/or impedance of the medium in response to the applied ac electromagnetic field.
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Citations
43 Claims
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1. A method for use in non-invasive measurements in a patient'"'"'s body, the method comprising:
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(a) creating a condition of artificial blood kinetics at a measurement location in a patient'"'"'s blood perfused fleshy medium and maintaining this condition for a certain time period;
(b) applying an external electromagnetic field to the measurement location while under said condition of artificial blood kinetics;
(c) detecting a time response of the medium from at least a portion of the measurement location to said external electromagnetic field, and generating measured data indicative of time evolutions of the response of the medium over at least a part of said certain time period;
the response to said external electromagnetic field including at least one of the following;
an acoustic response to illuminating incident light having a wavelength in a range where the scattering properties of blood are sensitive to light, and an impedance of the portion of the medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A system for use in non-invasive measurements in a patient'"'"'s body for determining at least one desired characteristic of the patient'"'"'s body, the system comprising:
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(i) a pressurizing assembly configured to be applied to the patient'"'"'s body and operable for creating a condition of artificial blood kinetics at a measurement location in a patient'"'"'s blood perfused fleshy medium and maintaining this condition for a certain time period;
(ii) a measuring probe including a source of an external electromagnetic field configured and operable for applying the electromagnetic field to the measurement location, and a detecting module configured for detecting a response of the medium from at least a portion of the measurement location to said external electromagnetic field, and generating measured data indicative of the response as a function of time; and
(iii) a control unit connectable to said pressurizing assembly and measuring probe, said control unit comprising a memory for storing reference data indicative of the desired blood characteristic as a function of a characteristic parameter derived from the time response; and
a data acquisition and processing utility configured to be response to the measured data and to analyze the measured data utilizing the reference data to determine said at least one desired blood characteristic. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification