Electrical Impedance Tomography

Electrical Impedance Tomography (EIT) is an imaging technique that visualizes conductivity or impedance distributions both in 2D and in 3D. Sciospec is partnering with world leading scientists in the field to deliver solutions that enable using EIT both in research and in practical applications.

Electrical Impedance Tomography

Apart from our standard instruments for easy entry into the world of EIT we also offer fully customized EIT products as well as application-specific OEM solutions. Build on Sciospec´s flexible technology plattform, scalabilty is at the heart of all our instruments: Channel counts of up to 256 are available in standard configurations and we even have reference system designs with a lot more than that.

Over the years we have realized applications ranging from the classical medical (lung ventilation monitoring and electrode positioning problems) over industrial applications (pipe system monitoring and contamination tracking) to state of the art chip based EIT for biosensing applications.

Discover Sciospec's powerful EIT platform
Let's begin with Sciospec's Impedance Tomography EIT lab instruments

Who we are working with and for

Latest Products

  • Discover Sciospec's powerful EIT platform

    64-channel impedance measurement system

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  • Discover Sciospec's powerful EIT platform
    8 channel 2 point ECISadapter for Sciospec Impedance Analyzers
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  • Discover Sciospec's powerful EIT platform

    16-channel impedance tomography system

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Available options

Sciospec’s EIT systems (EIT16/32/64/128+) are specifically designed for measurements for electrical impedance tomography. True parallel measurements and tightly synchronized switching allows for fast frame rates. No matter what channel count you decide to go with, you’ll benefit from:

  • dual role electrode connections serving both as voltage measurement and current injection ports
  • tightly synchronized data acquisition block for truly simultaneous sampling of all channels
  • injection switch matrix for selection of any combination of 2 channels for positive and negative injection ports
  • switch matrix either based on ultra-low leakage reed relays or high speed semicondutor switches
  • Sciospec SineFit algorithm for fast and precise signal extraction
  • broad frequency range (e.g. 100 Hz … 1 MHz)
  • spectral measurements with frequency sweeps with up to 128 frequencies
  • current excitation from 100 nA … 10 mA peak amplitude
  • frame rates up to 100 fps
  • software with ready to go imaging algorithms
  • fully customizable – just ask us

For easy entry a software provides EIT image reconstruction functionalities for time- and frequency-difference imaging. Alternatively you can just use the MATLAB code and import your data to EIDORS or write your own image reconstruction and import that to our software.


  • frontpanel connectors: BNC, SMA, MCX, DSUB, MDR, custom
  • IOport digital interface connector for external sensors and other hardware
  • wireless interfaces
  • medical grade modifications
    • power supply
    • enclosure modification
    • isolated USB-Port
    • AC coupling frontend
    • isolated IOport
  • temperature controller module
  • customized current and voltage ranges
  • Battery operation
  • and many more

With multichannel scalability as one of our core competences - EIT is a perfect match for our technology platform. Not only do we provide our expertise in instrumentation design, but we also have expert data scientists with long time experience in imaging algorithms for EIT embedded in our development team.

Relevant publications

Conference Logo
EIT256 I

And how about OEM?

As all our platform technology EIT is available as OEM, too. Our plaform allows for cost-efficient customization and easy integration of our technology to customers’ products. Safe time to market by getting the best impedance technology turn-key ready by the leading impedance OEM company. A portable device for mobile health or a massive multichannel platform for a screening application – everything is possible. You also need a graphical user interface? Okay. You’re going for a medical device? No problem. Just get in touch with us!

References & satisfied customers

Impedance Tomography

Impedance tomography is a non-invasive medical imaging technique that measures the electrical properties of tissues. The theory behind impedance tomography is that by applying a constant current across a material, the voltage distribution resulting on the surface will reflect the internal resistivity distribution. There are three types of impedance tomography: conventional EIT, dual frequency, and multi-frequency EIT. Conventional EIT uses a single frequency, most often 50 kHz, and images are constructed from two measurements at two different times to observe the change in conductivity. The images obtained, representing a change in conductivity in the time domain, are called differential images. The main purpose of measuring tissue electrical impedance is to differentiate normal and cancerous tissues in a variety of organs, including breast, cervix, skin, bladder, and prostate. Tissue electrical impedance is a function of its structure, and it can be used to distinguish between normal and suspected abnormal tissue within the same organ.

Tissue impedance is determined by the electrical properties of its components, which include the cell membrane and cytoplasm. At high frequencies, the electrode-tissue interface is the main contributor to tissue impedance. The cell membrane acts as a low-pass filter, restricting the flow of current across it; thus, the higher the frequency, the less current will be able to pass through the cell membrane. The cytoplasm acts as a resistor, producing an impedance that is inversely proportional to the frequency of the applied signal.

High concentrations of electrolytes, extracellular water content, large cells, and the number of cell connections by gap junctions present in blood and muscles reduce impedance. Impedance tomography has several applications, including imaging of lung function, diagnosis of pulmonary embolism, detection of tumors in the chest area, and diagnosis and distinction of ischemic and hemorrhagic stroke. Impedance tomography is also a monitoring tool that allows one to evaluate at the bedside the distribution of pulmonary ventilation continuously, in real-time, and which has proven to be useful in optimizing mechanical ventilation parameters in critically ill patients. The distribution of pulmonary ventilation is continuously monitored in real-time, and this information is used to optimize mechanical ventilation parameters in critically ill patients. In conclusion, impedance tomography is a promising imaging approach with a strong potential that has a large margin of progression before reaching the maturity phase. It is a non-invasive and low-cost imaging method that can provide valuable information about the electrical properties of tissues.

By measuring the electrical properties of tissues, impedance tomography can help diagnose various diseases and conditions, and it can also be used to monitor patients in real-time. The distribution of pulmonary ventilation is continuously monitored in real-time, and this information is used to optimize mechanical ventilation parameters in critically ill patients.

Find out more about our technology platform and our products

Still not the perfect fit for your application?
Then let’s custom-tailor it for you!

Our modular plaform allows for cost-efficient customization while keeping the development risk low. So what will you need? An application specific multiplexing solution, a ready-to-go portable device for mobile health or a massive multichannel platform for a screening application? Just get in touch with us!

Get in touch with us

+49 3425 88399 00


Sciospec Scientific Instruments GmbH
Leipziger Str. 43b, 04828 Bennewitz, Germany

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