Sciospec - Electrical Impedance. At its best.
+49 3425 88399 00
Email: info@sciospec.de
Sciospec Scientific Instruments GmbH
Leipziger Straße 43b, 04828 Bennewitz, Germany
In an ongoing project for electrical impedance-based needle guidance we have previously showed in an animal model that intraneural needle positions can be detected with bioimpedance measurement. To enhance the power of this method we in this study have investigated whether an early detection of the needle only touching the nerve also is feasible. Measurement of complex impedance during needle to nerve contact was compared with needle positions in surrounding tissues in a volunteer study on 32 subjects. Classification analysis using Support-Vector Machines demonstrated that discrimination is possible, but that the sensitivity and specificity for the nerve touch algorithm not is at the same level of performance as for intra-neural detection.
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