Method and device for measuring tissue oedema
First Claim
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1. A method of assessing tissue oedema comprising the steps of:
- performing a first measurement of bioelectrical impedance of a first anatomical region in a subject at a single low frequency alternating current performing a second measurement of bioelectrical impedance of a second anatomical region in the same subject at the same low frequency alternating current; and
analysing the two measurements to obtain an indication of the presence of tissue oedema.
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Abstract
The present invention provides a method of assessing tissue oedema, in particular lymphoedema, by measuring bioelectrical impedance at a single frequency. Comparison of a single frequency bioelectrical impedance measurement taken at an anatomical region affected by tissue oedema to that taken at an anatomical region unaffected by tissue oedema is a reliable indicator of the presence or possible presence of lymphoedema. The present invention further provides an apparatus for determining the presence of tissue oedema.
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Citations
25 Claims
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1. A method of assessing tissue oedema comprising the steps of:
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performing a first measurement of bioelectrical impedance of a first anatomical region in a subject at a single low frequency alternating current performing a second measurement of bioelectrical impedance of a second anatomical region in the same subject at the same low frequency alternating current; and
analysing the two measurements to obtain an indication of the presence of tissue oedema. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23)
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17. An apparatus for determining the presence of tissue oedema, including:
- current means for applying an alternating current to an anatomical region at a single frequency;
monitoring means to monitor the bioelectrical impedance of said region and produce signals characteristic of bioimpedance; and
analysis means to analyse the signals indicative of bioimpedance to provide an indication of tissue oedema.
- current means for applying an alternating current to an anatomical region at a single frequency;
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24. An apparatus for determining the presence of tissue oedema substantially as described with reference to FIGS. 3 and 4.
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25. An apparatus for determining the presence of tissue oedema substantially as described with reference to FIG. 5.
Specification