Method of processing thoracic reflected radio interrogation signals
First Claim
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1. A method of evaluating medical state of a subject comprising the steps of:
- providing a radio frequency interrogation interference signal from a subject, the radio frequency interrogation interference signal being low frequency components of reflections of a radio interrogation signal transmitted into the thorax of the subject; and
determining at least one cardiac or respiratory characteristic of the subject from radio frequency interrogation interference signal.
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Abstract
A method of evaluating or monitoring the medical state of a subject comprising the steps of: providing a radio frequency interrogation interference signal from a subject, the radio frequency interrogation interference signal being low frequency components of reflections of a radio interrogation signal transmitted into the thorax of the subject; and determining at least one cardiac or respiratory characteristic of the subject from radio frequency interrogation interference signal. The characteristic can be compared to predetermined values to assess current state or monitored for changes over time to assess change in condition of the subject.
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Citations
25 Claims
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1. A method of evaluating medical state of a subject comprising the steps of:
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providing a radio frequency interrogation interference signal from a subject, the radio frequency interrogation interference signal being low frequency components of reflections of a radio interrogation signal transmitted into the thorax of the subject; and determining at least one cardiac or respiratory characteristic of the subject from radio frequency interrogation interference signal. - 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)
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25. A method of processing cardio-respiratory/pulmonary data obtained by transmission of a radio interrogation signal into a subject torso and capturing reflections of the radio interrogation signal from various tissue of the torso comprising the steps of:
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extracting time varying components from the captured reflections of the radio interrogation signal as a radio interrogation impedance signal; and extracting at least one cyclical cardio-respiratory component from the radio interrogation impedance signal.
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Specification