| 摘要 |
METHOD AND APPARATUS FOR ESTABLISHING THE PRESSURE-DIAMETER RELATIONSHIP OF AN ARTERY BY NON-INVASIVE MEASURES This method for establishing the pressure-diameter relationship of an artery employs the measurement results from a non-invasive sensor (3) of the artery diameter, for instance of the humeral artery, and from a non-invasive sensor (4) of the blood pressure applied for instance to the end of a finger. The measurement locations being separated by a distance .DELTA.x, the method provides for the correction of the pressure measurements as if such measurements had been effected at the location of the diameter mesurements. The method further provides a correction which takes into account the mechanical properties of the artery, defined by the parameters .alpha. , .beta., .gamma. ... and which are calculated, if necessary by successive iterations, until the pressure-diameter curve appears free from all measurement anomalies (hysteresis). The pressure-diameter relationship enables the calculation of the mechanical properties of the artery, in particular by compliance curves and the propagation velocity as a function of the pressure.
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