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. 2000 May;45(5):1397-407.
doi: 10.1088/0031-9155/45/5/321.

Multifrequency method for dielectric monitoring of cold-preserved organs

V Raicu  1 , T Saibara, A Irimajiri
Affiliations

Multifrequency method for dielectric monitoring of cold-preserved organs

V Raicu et al. Phys Med Biol. 2000 May.

Abstract

To answer a growing need for non-invasive monitoring of biological organs, we have developed an automated system capable of repeated dielectric measurements over the frequency range 10 kHz-100 MHz. Further, we propose a novel method of data analysis that may convert the acquired, individual dispersion curves into a diagram of the time course of specific phenomenological parameters, such as the characteristic frequency. By using this new procedure, unattended, long-term monitoring of temporal changes in the dielectric behaviour of excised liver lobes stored at 4 degrees C was successfully realized. The 'multifrequency' method presented here was definitely superior to the conventional 'fixed-frequency' method in providing reliable results.

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