Comments on 'In vivo measurements of electrical conductivity of porcine organs at low frequency: New method of measurement' by J. Spottorno, M. Multigner, G. Rivero, L. álvarez, J. de la Venta, and M. Santos

摘要

The 2% uncertainty value associated with the low frequency conductivity measurements reported in the article is impressive, but it is not clear how this value is calculated and what sources of error have been considered in the calculations.I was also surprised that the authors did not cite a recently published article by Gabriel et al. [2009] in which they reported a comprehensive survey of recent, low frequency literature data and also carried out in vivo conductivity measurement of tissues below 1 MHz, emphasizing the challenges associated with them (despite using a 4-terminal technique).