Passive Microwave Assessment of Human Body Core to Surface Temperature Gradients and Basal Metabolic Rate
First Claim
1. A system for the assessment of human blood flow gradients at a radial depth of a human subject comprisinga passive microwave receiver for operation within a selected microwave frequency range whereby the lower the frequency range, the greater the depth of penetration of a human body, each selected frequency range comprising at least one noise measuring channel, the passive microwave receiver comprising a directional antenna for radial direction toward a specific location on the skin surface of the human subject where the location is proximate to a human vascular system comprising one of an artery or vein of one of an ear, the hypothalamus, the nasopharyngeal cavity, a rectum, a breast, a heart, an arm, a hand, a leg, a foot and a tongue.
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Accused Products
Abstract
A passive microwave thermography apparatus uses passive microwave antennas designed for operation, for example, at WARC protected frequencies of 1.400 to 1.427 GHz and 2.690 to 2.70 GHz (for core body gradient temperature measurement) and 10.68 to 10.700 GHz or higher microwave frequency (for surface body gradient temperature measurement) and a related directional antenna or antenna array to measure microwave radiation emanating from an animal, especially, a human body. The antennae may be radially directed toward a point within or on the surface of a human body for comparison with known temperature distribution data for that point and a given ambient temperature. Each frequency band may provide a plurality of adjacent noise measuring channels for measuring microwave noise naturally emitted by the human body. The apparatus measures short-term changes in, for example, core and body surface temperatures to establish a basal metabolic rate. Changes in core body temperature may be stimulated by the administration of food or certain organic and drug-related substances or stress to induce a change in basal metabolic rate over time. These changes correlate directly with a human subject'"'"'s metabolism rate at rest and under certain dietary constraints and can be used to determine courses of treatment for obesity, metabolic disease, and other disorders. The apparatus can also be used to remotely monitor patients and subjects without physical contact.
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Citations
20 Claims
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1. A system for the assessment of human blood flow gradients at a radial depth of a human subject comprising
a passive microwave receiver for operation within a selected microwave frequency range whereby the lower the frequency range, the greater the depth of penetration of a human body, each selected frequency range comprising at least one noise measuring channel, the passive microwave receiver comprising a directional antenna for radial direction toward a specific location on the skin surface of the human subject where the location is proximate to a human vascular system comprising one of an artery or vein of one of an ear, the hypothalamus, the nasopharyngeal cavity, a rectum, a breast, a heart, an arm, a hand, a leg, a foot and a tongue.
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15. An assessment method for assessing human metabolic response including blood flow over time in response to a pressure occlusion comprising
directing a passive microwave receiver having a plurality of adjacent noise-measuring channels within a predetermined microwave frequency range, the passive microwave receiver having a directional antenna for radial direction at a given body part of a human under observation comprising one of a foot or leg, determining from the predetermined microwave frequency range for receiving a noise-measuring channel and from said radial direction, a corresponding radial depth of human body tissue configured to reach a vascular system of an artery and vein of the foot or leg, comparing a location of measurement and radial depth of the vascular system with stored data for blood flow over time of a normal human body through the vascular system and determining a blood flow in the vascular system over time for the plurality of adjacent noise-measuring channels and corresponding radial depths.
Specification