Methods and systems for determining fluid content of tissue
First Claim
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1. A method for diagnosis, comprising:
- directing radio frequency (RF) electromagnetic waves from one or more antennas disposed on a thorax of a body of a patient so that the RF electromagnetic waves pass through or reflect off a lung in the body;
outputting signals responsively to the RF electromagnetic waves that have passed through the lung;
processing the signals over time so as to measure a path characteristic of the RF electromagnetic waves;
comparing the measured path characteristic to one or more benchmark path characteristic values corresponding to identified levels of fluid content of lungs; and
determining fluid content of the lung based on the comparison.
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Abstract
Diagnostic apparatus includes a plurality of antennas, which are configured to be disposed at different, respective locations on a thorax of a living body so as to direct radio frequency (RF) electromagnetic waves from different, respective directions toward a heart in the body and to output RF signals responsively to the waves that are scattered from the heart. Processing circuitry is configured to process the RF signals over time so as to provide a multi-dimensional measurement of a movement of the heart.
216 Citations
21 Claims
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1. A method for diagnosis, comprising:
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directing radio frequency (RF) electromagnetic waves from one or more antennas disposed on a thorax of a body of a patient so that the RF electromagnetic waves pass through or reflect off a lung in the body; outputting signals responsively to the RF electromagnetic waves that have passed through the lung; processing the signals over time so as to measure a path characteristic of the RF electromagnetic waves; comparing the measured path characteristic to one or more benchmark path characteristic values corresponding to identified levels of fluid content of lungs; and determining fluid content of the lung based on the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method, comprising:
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directing radio frequency (RF) electromagnetic waves from one or more antennas disposed on a body of a patient so that the RF electromagnetic waves pass through a first tissue of the body; outputting signals responsively to the RF electromagnetic waves that have passed through the first tissue; processing the signals at a plurality of different points over a period of time so as to determine a path characteristic of the RF electromagnetic waves relative to the first tissue at the different points; comparing the determined path characteristic at the plurality of different points over the period of time; and determining a change in fluid content of the first tissue over the period of time based on the comparison. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification