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Related Concept Videos

Bode Plots Construction01:24

Bode Plots Construction

The Bode plot is an essential tool in control system analysis, mapping the frequency response of a system through a magnitude plot and a phase plot, both against a logarithmic frequency axis. To construct a Bode plot, consider the transfer function H(ω):
RLC Series Circuits: Impedance01:29

RLC Series Circuits: Impedance

When current flow is opposed in a DC or AC circuit, it is referred to as resistance or impedance, respectively. Impedance plays a key role in determining the performance of AC circuits. It is represented by Z, which is a combination of resistance and reactance, and depends upon the angular frequency, measured in ohms.
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Impedance Combination01:21

Impedance Combination

Consider a string of christmas lights, each bulb symbolizing an impedance element. In this series configuration, the flow of electric current remains uniform across every component. This behavior aligns with Kirchhoff's Voltage Law (KVL), which asserts that the total impedance in such a setup equals the sum of individual impedances—akin to resistors in series. It follows that the voltage from the power source is distributed proportionally among these components, adhering to the voltage division...
Impedances and Admittance01:23

Impedances and Admittance

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Related Experiment Video

Updated: Jun 26, 2026

Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit
05:56

Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit

Published on: September 6, 2024

Electrical impedance tomography.

Eduardo L V Costa1, Raul Gonzalez Lima, Marcelo B P Amato

  • 1Respiratory Intensive Care Unit, University of São Paulo School of Medicine, São Paulo, Brazil.

Current Opinion in Critical Care
|February 4, 2009
PubMed
Summary
This summary is machine-generated.

Electrical impedance tomography (EIT) provides real-time, noninvasive imaging of lung ventilation in critical care. This technology aids in detecting lung collapse, monitoring recruitment, and diagnosing pneumothoraces, enhancing patient care.

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Area of Science:

  • Medical Imaging
  • Critical Care Medicine
  • Pulmonary Physiology

Background:

  • Electrical impedance tomography (EIT) is a noninvasive imaging technique.
  • EIT offers real-time visualization of lung ventilation without radiation.
  • Its application in critical care settings is expanding.

Purpose of the Study:

  • To elucidate the fundamental principles of EIT.
  • To review the current applications of EIT in critical care.
  • To highlight EIT's role in monitoring ventilation and diagnosing pulmonary conditions.

Main Methods:

  • Review of existing literature on EIT in critical care.
  • Discussion of EIT's technical underpinnings.
  • Analysis of EIT's diagnostic and monitoring capabilities.

Main Results:

  • EIT accurately images alveolar ventilation distribution.
  • EIT detects lung collapse and monitors recruitment regionally and globally.
  • EIT diagnoses pneumothoraces with high sensitivity and estimates V/Q distributions with contrast agents.

Conclusions:

  • EIT is a cost-effective, noninvasive tool for continuous ventilation monitoring.
  • EIT is increasingly recognized as valuable for critical patient management.
  • Its versatility supports diverse applications in intensive care units.