Desenvolvimento de hardware para análise de bioimpedância em banda larga

The bioimpedance spectroscopy is a technique that allows the biological tissue research from its electrical properties. The applications include body composition, research in cancer cells, bioimpedance tomography and others. This paper realizes the development of a bioimpedance analyzer for frequencies between 1 kHz and 1 MHz and impedance range between 50 and 1 kΩ. The system perform the acquisition with a tetrapolar topology, which a current excitation used was ternary chirp signal. For device control and visualization of the results, a software was also developed in LabVIEW platform. As a result, the project requires a total time of 2.47 s to perform the bioimpedance measurement, however only 10 ms are used for tissue excitation, the resolution obtained was 2.44 Ω for the module and 0.29° for the phase, with errors of accuracy around 30 Ω (module) and 6 ° (phase).

Grantor dc:publisher

Universidade Federal do Rio de Janeiro

Year dc:date.issued

2017

Author dc:creator

• Souza, Anderson Francisco da Costa

Advisor dc:contributor.advisor

• Pino, Alexandre Visintainer

• Engenharia biomédica
• Bioimpedância
• Hardware

Statement dc:rights

• Acesso Aberto

Language dc:language

por

Handle dc:identifier.uri

http://hdl.handle.net/11422/9710

OAI identifier oai:identifier

oai:pantheon.ufrj.br:11422/9710