Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Mk3.5: a modular, multi-frequency successor to the Mk3a EIS/EIT system.

A J Wilson1, P Milnes, A R Waterworth

  • 1Department of Medical Physics and Clinical Engineering, Royal Hallamshire Hospital, Sheffield, UK.

Physiological Measurement
|March 10, 2001
PubMed
Summary

The Sheffield Mk3.5 Electrical Impedance Tomography (EIT) system offers improved impedance measurement across 30 frequencies. This advanced EIT/EIS system achieves a 40 dB signal-to-noise ratio, surpassing previous models.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Patient Experiences of Using Wearable Health Monitors During Cancer Treatment: A Qualitative Study.

Clinical oncology (Royal College of Radiologists (Great Britain))·2024
Same author

Advanced Systemic Mastocytosis with associated haematological neoplasm: Treatment with avapritinib can facilitate successful bridge to allogeneic haematopoietic cell transplant.

Current research in translational medicine·2023
Same author

Using genomic prediction to detect microevolutionary change of a quantitative trait.

Proceedings. Biological sciences·2022
Same author

Excellent medium-term survival of an all-inside tensionable knotted suture device justifies repair of most meniscal tears encountered during reconstructive knee ligament surgery.

Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA·2020
Same author

First Report of Tomato spotted wilt virus in Common Agapanthus.

Plant disease·2019
Same author

Notes on Interesting Cases.

Glasgow medical journal·2018

Area of Science:

  • Electrical Engineering
  • Biomedical Engineering
  • Signal Processing

Background:

  • Electrical Impedance Tomography (EIT) and Electrical Impedance Spectroscopy (EIS) are valuable non-invasive imaging techniques.
  • Advancements in EIT/EIS systems are crucial for improving measurement accuracy and signal-to-noise ratio.

Purpose of the Study:

  • To describe the novel Sheffield Mk3.5 EIT/EIS system.
  • To evaluate the performance and signal-to-noise ratio of the new system.

Main Methods:

  • Utilized an eight-electrode system with an adjacent drive/receive protocol.
  • Employed a modular design with eight data acquisition boards featuring Digital Signal Processors (DSPs).
  • Generated drive frequencies using summed sine waves and performed Fast Fourier Transform (FFT) for demodulation.

Related Experiment Videos

Main Results:

  • Measured impedance (real and imaginary parts) across 30 frequencies (2 kHz to 1.6 MHz).
  • Achieved an average signal-to-noise ratio (SNR) of 40 dB, consistent across all frequencies.
  • Demonstrated a 10 dB improvement in absolute SNR compared to the previous Sheffield (Mk3a) system.

Conclusions:

  • The Sheffield Mk3.5 EIT/EIS system provides high-fidelity impedance measurements.
  • The system exhibits excellent and frequency-independent signal-to-noise performance.
  • This enhanced system represents a significant improvement over its predecessor for EIT/EIS applications.