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Tracking the Traveled Distance of Capsule Endoscopes along a Gastrointestinal-Tract Model Using Differential Static

Samuel Zeising¹, Lu Chen¹, Angelika Thalmayer¹

¹Institute for Electronics Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstraße 9, 91058 Erlangen, Germany.

Diagnostics (Basel, Switzerland)

|June 24, 2022

Summary

This summary is machine-generated.

Physicians need capsule endoscope tracking. This study precisely tracked magnets, achieving high accuracy for distance and orientation, ideal for gastrointestinal tract navigation.

Keywords:

static magnetic localisation trajectory tracking traveled distance wireless capsule endoscopy

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Area of Science:

Medical Imaging
Biomedical Engineering
Gastroenterology

Background:

Commercial capsule endoscopes lack traveled distance and orientation data, crucial for physicians.
Existing scientific tracking methods struggle with precise capsule navigation in curved gastrointestinal tracts.

Purpose of the Study:

To evaluate the differential static magnetic localization method for tracking capsule endoscopes.
To determine the minimum magnet size for accurate tracking of capsule endoscope position and orientation.

Main Methods:

Employed the differential static magnetic localization method to track permanent magnets.
Simulated a 487.5 mm winding gastrointestinal tract model.
Tested permanent magnets of 10 mm diameter and varying lengths (≥5 mm).

Main Results:

Mean relative distance error was 4.3 ± 3.3%.
Mean orientation error was 2 ± 0.6°.
Tracking accuracy was maintained with magnet lengths of at least 5 mm.

Conclusions:

A 5 mm magnet length offers a balance between accuracy and volume for capsule integration.
The proposed method achieves superior tracking accuracy compared to state-of-the-art for gastrointestinal tract dimensions.