| 摘要 |
Volumetric measurements on human or animal limbs are carried out in medicine as follow-up therapy and in testing drugs. The aim thereby is, e.g., to establish whether an oedema is being displaced or whether blood is sinking in the limbs. This measurement is carried out, e.g., by sectional determination of the extent and calculation using a mathematical model of Kuhnke, by measurement of the silhouette followed by mathematical evaluation, or by an overflow volumenometer meter in which the limbs are immersed in a vessel filled with water and the amount of overflowing water is determined. The concept of the invention consists in replacing measurement of the water displacement by measurement of the displacement of electrical field lines in an electrolytic trough. The measurement arrangement consists essentially of an electrically non-conductive tub in which there are an electrolyte solution and two electrodes. The change in the resistance upon immersion of the limbs is determined using means known per se. The measurement utilises the circumstance that the specific resistance of human or animal tissue is substantially higher than the specific resistance of the electrolyte solution. An error caused by the shape plays a subordinate role in examinations of longitudinal sections, since the extremity retains its principal shape. The figure shows the simple measurement arrangement described. By arranging a plurality of electrodes ... Original abstract incomplete. <IMAGE>
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