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Related Experiment Videos

[An experimental system of induced-current EIT].

Xiuzhen Dong1, Fusheng You, Mingxin Qin

  • 1Department of Biomedical Engineering, Fourth Military Medical University, Xi'an 710032, China.

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi = Journal of Biomedical Engineering = Shengwu Yixue Gongchengxue Zazhi
|July 15, 2004
PubMed
Summary
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A new contactless system for induced-current electrical impedance tomography (ICEIT) was developed. This system successfully detected changes in electrical impedance when objects were placed within a phantom, enabling preliminary imaging.

Area of Science:

  • Biomedical Engineering
  • Electrical Engineering
  • Medical Imaging

Context:

  • Electrical Impedance Tomography (EIT) is an imaging technique.
  • Contactless excitation offers advantages over traditional EIT methods.
  • Developing novel EIT systems is crucial for advancing medical diagnostics.

Purpose:

  • To develop and test a preliminary Induced-Current Electrical Impedance Tomography (ICEIT) system.
  • To demonstrate the feasibility of contactless excitation for EIT.
  • To acquire preliminary imaging data using the developed ICEIT system.

Summary:

  • A preliminary ICEIT system was constructed using 3 excitation coils, a Direct Digital Synthesis (DDS) based constant current source (CCS), power amplifiers, and a 12-bit A/D card.
  • The system operates at 46.875 KHz with adjustable current output (0.16 mA to 2.56 mA).

Related Experiment Videos

  • Experiments demonstrated the system's ability to detect impedance changes caused by objects in a physical phantom, acquiring 3x31 signals for imaging.

    • Impact:

    • This research paves the way for advanced, contactless EIT applications.
    • The developed system provides a foundation for future ICEIT research and development.
    • Successful preliminary imaging demonstrates the potential of ICEIT in various fields.