DEVELOPMENT OF MULTI FREQUENCY ELECTRICAL IMPEDANCE TOMOGRAPHY FOR RECTANGULAR GEOMETRY BY FINITE VOLUME METHODS

Khusnul Ain, Deddy Kurniadi, Mokhamad Fakhrul Ulum, Lina Choridah, Utriweni Mukhayyar, Agah D. Garnadi, Nurhuda Hendra Setyawan, Bayu Ariwanto

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Electrical impedance tomography (EIT) is a non-invasive technique for imaging the electrical conductivity and permittivity in the body by measuring the electrical potential on the surface. One of the EIT applications in the medical field is breast cancer detection. The study proposed a rectangular geometry EIT multi-frequency device based on the Finite Volume Method (FVM) reconstruction method. This device can be used to complement mammography images into dual EIT-mammography modalities. The EIT device built of DDS AD9850 as a programmable multi-frequency sinusoidal generator, AD620 as instrument amplifier, AD536 as an AC converter, and ADS1115 as an ADC 16 bit. These devices can scan at the maximum frequency of 100 kHz. The device has been tested with a phantom of distilled water and carrots in the center and on the sides. The reconstruction methods one step different frequency produces a rectangular geometric image with anomalies in the depth and at the surface clearly.

Original languageEnglish
Pages (from-to)9-15
Number of pages7
JournalJurnal Teknologi (Sciences and Engineering)
Volume84
Issue number2
DOIs
Publication statusPublished - Mar 2022

Keywords

  • Breast cancer
  • Electrical impedance tomography
  • Finite volume methods
  • Multi frequency
  • Rectangular geometry

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