Electrical impedance of nodular basal cell carcinoma: a pilot study.

Dermatology

Department of Dermatology and Venereology, Huddinge University Hospital, Huddinge, Sweden.

Published: January 1999

Background: Previously, we have explored the use of measurements of electrical impedance and devised 4 physically distinct indices named magnitude index (MIX), phase index, real part index and imaginary part index (IMIX) from the impedance data. Our results indicated that these indices could characterize contact reactions.

Objective: The goal of the present study was to use the electrical impedance method for the preoperative assessment of nodular basal cell carcinoma (BCC).

Methods: We included 11 patients with a total of 12 nodular BCC, diagnosed clinically and histologically. The noninvasive measurements were performed by transepidermal water loss (TEWL) and electrical impedance. For reference, normal looking contralateral or ipsilateral skin was used.

Results: Compared to controls, the mean TEWL of BCC was increased, but this finding was not statistically significant. The electrical impedance measurements of BCC tissue revealed statistically significant changes of the impedance indices MIX and IMIX (p
Conclusion: The results suggest that the measurement of electrical impedance might become useful for investigations of BCC.

Download full-text PDF

Source
http://dx.doi.org/10.1159/000018023DOI Listing

Publication Analysis

Top Keywords

electrical impedance
20
nodular basal
8
basal cell
8
cell carcinoma
8
impedance
6
electrical
5
impedance nodular
4
carcinoma pilot
4
pilot study
4
study background
4

Similar Publications

Carcinoembryonic antigen (CEA) and C-reactive protein (CRP) are biomacromolecules known as cancer and inflammatory markers. Thus, they play a crucial role in early cancer diagnosis, post-treatment recurrence detection, and tumor risk assessment. This paper describes the development of an ultrasensitive and selective imprinted paper-based analytical device (PAD) as impedance sensor for determination of CEA and CRP in serum samples for point-of-care testing (POCT).

View Article and Find Full Text PDF

Organic Mixed Conductors for Neural Biomimicry and Biointerfacing.

Annu Rev Chem Biomol Eng

January 2025

Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, Norrköping, Sweden; email:

Organic mixed ionic-electronic conductors (OMIECs) could revolutionize bioelectronics by enabling seamless integration with biological systems. This review explores their role in neural biomimicry and biointerfacing, with a focus on how backbone design, sidechain optimization, and antiambipolarity impact performance. Recent advances highlight OMIECs' biocompatibility and mechanical compliance, making them ideal for bioelectronic applications.

View Article and Find Full Text PDF

The scope of this study was to determine the diagnostic performance of ABSI for obesity and sarcopenic obesity, compared to the results of bioimpedance analysis (BIA) and BMI, by sex and age group. It involved a cross-sectional study with 12,793 participants in the second round of ELSA-Brasil (Longitudinal Study of Adult Health in Brazil), which obtained measurements of body fat percentage using BIA and anthropometry, verifying the performance of the diagnostic tests in order to compare the indices. The results showed that for obesity in men in all three age groups, the sensitivity was below 49%.

View Article and Find Full Text PDF

Monitoring of ventilation in prone position in a patient diagnosed with scrub typhus and acute respiratory distress syndrome by using an electrical impedance tomography: a case report.

Trop Biomed

December 2024

Department of Critical Care Medicine, The Fourth Affiliated Hospital, School of Medicine, Zhejiang University, No. N1 Shangcheng Avenue, Yiwu, Zhejiang 322000, China.

Scrub typhus is an infectious disease caused by Orientia tsutsugamushi. It is transmitted through bite of chigger mite larvae and presents with symptoms such as fever, myalgia, headache, rash, and a characteristic eschar at the site of mite bites. This report details the case of a woman exhibiting acute febrile illness, bilateral pneumonia, and severe hypoxemia, prompting suspicion of scrub typhus due to the presence of a typical eschar on the pubic mound.

View Article and Find Full Text PDF

Creating durable, motion-compliant neural interfaces is crucial for accessing dynamic tissues under in vivo conditions and linking neural activity with behaviors. Utilizing the self-alignment of nano-fillers in a polymeric matrix under repetitive tension, here, we introduce conductive carbon nanotubes with high aspect ratios into semi-crystalline polyvinyl alcohol hydrogels, and create electrically anisotropic percolation pathways through cyclic stretching. The resulting anisotropic hydrogel fibers (diameter of 187 ± 13 µm) exhibit fatigue resistance (up to 20,000 cycles at 20% strain) with a stretchability of 64.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!