Title :
Determination of tissue type surrounding a needle tip by electrical bioimpedance
Author :
Kalvøy, Håvard ; Martinsen, Ørjan G. ; Grimnes, Sverre
Author_Institution :
Department of Clinical and Biomedical Engineering, Rikshospitalet HF, NO-0027 Oslo, Norway
Abstract :
A novel method for determining needle position based on local tissue impedance and electrode polarization data, is presented. Measurements of electrical impedance in a small volume around a needle tip can aid in determining if the needle is in the desired tissue. There are many possible applications for this technique, such as needle positioning when administrating drugs in blood vessels or muscle tissue, for epidural analgesia or needle EMG exams.
Keywords :
Bioimpedance; Blood vessels; Drugs; Electric variables measurement; Electrodes; Impedance measurement; Muscles; Needles; Polarization; Volume measurement; Adipose Tissue; Animals; Electric Impedance; Electrodes; Electrophysiology; Muscles; Needles; Pilot Projects; Swine;
Conference_Titel :
Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual International Conference of the IEEE
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4244-1814-5
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2008.4649653
