Resumo

OLARTE-ECHEVERRI, Germán; ARISTIZABAL-BOTERO, William; OSORIO-G, Gloria Fátima  e  ROJAS-DIAZ, Jerónimo. Electrical impedance spectroscopy in cervical cancer in women from Caldas, Colombia 2008-2009. Rev Colomb Obstet Ginecol [online]. 2010, vol.61, n.1, pp.18-22. ISSN 0034-7434.

Objective: obtaining electrical resistivity curves for cervical tissues in invasive cervical cancer. Methodology: a tissue impedance meter was used (MK 3.5 Electrical Impedance Spectroscopy, single channel system) in this cross-sectional study of invasive cervical cancer patients; it led to calculating the tissues’ transfer impedance by means of a pencil probe incorporating four gold electrodes. Results: 102 measurements were made and resistivity curves for cervical tissue were obtained in 18 women aged 46 to 72 (56±9, mean ± SD). These tissues presented a special resistivity curve for invasive cervical cancer, average resistivity parameters being (R₀ = 4.35 ± 2.26 [Ω-m] and R_∞ = 1.41 ± 0.57 [Ω-m]). Resistivity values for those estimations (R = 4.35 ± 2.26 [Ω-m] and S = 2.44 ± 1.11 [Ω-m]). Conclusion: electrical impedance spectroscopy presented different patterns for invasive cervical cancer tissue and healthy tissue.

Palavras-chave : spectrum analysis; electric impedance; uterine cervical neoplasia; cervix neoplasms.

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