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Related Experiment Video

Updated: Jul 18, 2026

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

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

Published on: April 21, 2013

Application accuracy of an electromagnetic field-based image-guided navigation system.

Joshua M Rosenow¹, W Keith Sootsman

¹Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA. jrosenow@nmff.org

Stereotactic and Functional Neurosurgery

|December 15, 2006

Summary

Electromagnetic navigation systems show accuracy comparable to optical systems for image-guided procedures. Stabilized approaches significantly reduce localization errors compared to freehand methods.

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Published on: March 6, 2019

Area of Science:

Neurosurgery
Medical Imaging
Surgical Navigation

Background:

Image-guided surgery enhances precision and safety.
Electromagnetic (EM) and optical tracking systems are common navigation tools.

Purpose of the Study:

To evaluate the application accuracy of an EM-based image guidance system.
To compare EM system accuracy against traditional optical tracking systems.

Main Methods:

A skull phantom with fiducial markers underwent CT scanning.
Localization errors (radial and depth) were measured using both freehand and stabilized approaches with an EM guidance system.
Statistical analysis compared errors between freehand and stabilized methods.

Main Results:

Total target localization error ranged from 0.71 to 3.51 mm (mean 2.13 mm).
Radial error averaged 0.98 mm, and depth error averaged 1.74 mm.
Stabilized approaches yielded statistically lower radial, depth, and total errors than freehand methods.

Conclusions:

The accuracy of EM-based image-guided localization is comparable to that of optically guided systems.
Stabilized EM navigation offers improved accuracy over freehand techniques.