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Updated: Jul 16, 2026

Handheld Metal Detector Screening for Metallic Foreign Body Ingestion in Children
Published on: September 11, 2018
Handheld metal detector confirmation of radiopaque foreign bodies in the esophagus
1Department of Otolaryngology-Head and Neck Surgery, Eastern Virginia Medical School, 825 Fairfax Ave, Norfolk, VA 23507, USA.
Insights
Handheld metal detectors accurately confirmed the esophageal position of radiopaque foreign bodies, specifically coins, in children. This tool may reduce the need for repeat X-rays before endoscopic removal.
Area of Science:
- Pediatric Gastroenterology
- Medical Imaging
- Emergency Medicine
Background:
- Esophageal foreign bodies are common in children.
- Radiopaque foreign bodies require precise localization for safe endoscopic removal.
Purpose of the Study:
- To evaluate the effectiveness of handheld metal detectors in locating radiopaque esophageal foreign bodies.
- To determine if metal detectors can replace or reduce the need for repeat radiographic imaging.
Main Methods:
- Prospective study conducted at a tertiary pediatric referral center.
- Included 26 children with esophageal foreign bodies requiring delayed endoscopic removal (minimum 6-hour delay).
- Patients underwent both standard radiography and handheld metal detector scanning before and after initial evaluation.
Main Results:
- All 26 eligible children had coins lodged in the esophagus.
- Handheld metal detector scanning accurately confirmed the coin's position in all cases prior to endoscopic removal.
- No false positives or negatives were reported for the metal detector.
Conclusions:
- Handheld metal detectors are a reliable tool for confirming the position of esophageal coins.
- This technology may eliminate the need for additional radiographic studies in select pediatric patients.
- Metal detectors offer a potentially faster and safer method for localization before endoscopic intervention.
Objective:
To examine the utility of handheld metal detectors in confirming the position of radiopaque foreign bodies in the esophagus before delayed endoscopic removal.
Design:
Prospective study of patients evaluated between June 1, 1997, and August 31, 1999.
Setting:
Tertiary pediatric referral center.
Patients:
Twenty-six of 139 children presenting consecutively for evaluation of esophageal foreign bodies met eligibility criteria and completed the study protocol. Inclusion in the study was contingent on a delay of at least 6 hours from the time of diagnosis to the time of endoscopic removal. All patients underwent both radiographic evaluation and handheld metal detector scanning of the chest and abdomen on presentation and immediately before endoscopic removal.
Results:
All patients evaluated during the study period had coins lodged within the esophagus. Handheld metal detector scanning accurately confirmed this position before endoscopic removal in all cases.
Conclusion:
Our data suggest that handheld metal detectors may obviate the need for repeated radiographs in patients whose foreign bodies cannot be removed at presentation.
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