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Related Concept Videos

Compass01:23

Compass

The compass is a fundamental instrument that operates by aligning its magnetic needle with Earth's magnetic field. This alignment facilitates navigation and orientation, offering a means to determine direction relative to magnetic north. However, the magnetic needle points to magnetic north, which differs slightly from true geographic north due to magnetic declination, which is the angular deviation between these two points. Declination varies based on geographic location and shifts over time...
Electromagnetic Fields01:30

Electromagnetic Fields

Electric fields generated by static charges, often referred to as electrostatic fields, are characteristically different from electric fields created by time-varying magnetic fields. While the former is a conservative field, implying that no net work is done on a test charge if it goes around in a complete loop in the field, the latter is, by definition, not a conservative field; net work is done, and it is proportional to the rate of change of magnetic flux.
However, the observation of Gauss's...
Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short distances...
Magnetic Declination01:19

Magnetic Declination

Magnetic declination is the angle between true north, which aligns with the Earth's rotational axis, and magnetic north, which follows the direction of the Earth's magnetic field. This discrepancy exists because the magnetic poles do not coincide with the geographic poles. The value of magnetic declination depends on the observer's location on Earth and is subject to changes over time due to the dynamic nature of the Earth's magnetic field.The declination is called eastern when magnetic north...
Plane Electromagnetic Waves I01:30

Plane Electromagnetic Waves I

The existence of combined electric and magnetic fields that propagate through space as electromagnetic (EM) waves is the most significant prediction of Maxwell's equations. As Maxwell's equations hold in free space, the predicted electromagnetic waves do not require a medium for their propagation. An EM wave comprises an electric field, defined as the force per charge on a stationary charge, and a magnetic field, which is the force per charge on a moving charge.
The EM field is assumed to be a...
Electromagnetic Waves01:30

Electromagnetic Waves

James Clerk Maxwell formulated a single theory combining all the electric and magnetic effects scientists knew during that time, calling the phenomena his theory predicted “Electromagnetic waves”. He brought together all the work that had been done by brilliant physicists such as Oersted, Coulomb, Gauss, and Faraday and added his own insights to develop the overarching theory of electromagnetism. Maxwell’s equations, combined with the Lorentz force law, encompass all the laws of electricity and...

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Related Experiment Video

Updated: Jun 16, 2026

Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures
09:13

Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures

Published on: April 21, 2013

Electromagnetic navigation.

Yehuda Schwarz1

  • 1Department of Pulmonology, Tel-Aviv Sourasky Medical Center, 6 Weisman Street, Tel-Aviv, 64239, Israel. schwarz@tasmc.health.gov.il

Clinics in Chest Medicine
|February 23, 2010
PubMed
Summary
This summary is machine-generated.

Electromagnetic navigation bronchoscopy with overlaid CT images is a safe, effective tool for diagnosing peripheral lung lesions and sampling lymph nodes. This radiation-free method offers a short learning curve and complements other diagnostic procedures.

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Electromagnetic Navigation Transthoracic Nodule Localization for Minimally Invasive Thoracic Surgery
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Electromagnetic Navigation Transthoracic Nodule Localization for Minimally Invasive Thoracic Surgery

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Related Experiment Videos

Last Updated: Jun 16, 2026

Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures
09:13

Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures

Published on: April 21, 2013

Electromagnetic Navigation Transthoracic Nodule Localization for Minimally Invasive Thoracic Surgery
07:30

Electromagnetic Navigation Transthoracic Nodule Localization for Minimally Invasive Thoracic Surgery

Published on: May 4, 2022

Area of Science:

  • Pulmonology
  • Medical Imaging
  • Interventional Bronchoscopy

Background:

  • Flexible bronchoscopy is crucial for diagnosing peripheral lung lesions.
  • Navigational bronchoscopy aims to improve the accuracy and yield of these procedures.

Purpose of the Study:

  • To evaluate the safety and efficacy of electromagnetic navigation bronchoscopy (ENB) using overlaid CT images.
  • To assess the diagnostic yield of ENB for peripheral lung lesions and mediastinal lymph node sampling.

Main Methods:

  • Electromagnetic navigation bronchoscopy with real-time overlaid CT imaging was utilized.
  • Diagnostic yield for peripheral lesions and mediastinal lymph node sampling were assessed.
  • Procedure safety and learning curve were evaluated.

Main Results:

  • ENB is a safe procedure with a high diagnostic yield for peripheral lung lesions.
  • It enables effective sampling of mediastinal lymph nodes.
  • The system offers advantages including no additional radiation and a short learning curve.

Conclusions:

  • Electromagnetic navigation bronchoscopy is a safe and effective tool for diagnosing peripheral lung lesions.
  • It enhances diagnostic capabilities and complements other bronchoscopic modalities.
  • The technology is also applicable for fiducial marker placement in radiotherapy.