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Updated: Oct 21, 2025
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X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
Published on: September 11, 2011
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Pediatric Phantom Dosimetry of a Portable Handheld X-ray Device
Juan F Yepes1, Jackie Hwang2, LaQuia A Vinson3
1Professor, Department of Pediatric Dentistry, Indiana University School of Dentistry, Indianapolis, Indiana.
Compendium of Continuing Education in Dentistry (Jamesburg, N.J. : 1995)
|September 1, 2021
Summary
Thyroid shielding significantly reduces radiation dose from the Xray2Go handheld X-ray device for pediatric bitewing projections. Operator radiation exposure was minimal, comparable to background levels.
Area of Science:
- Radiological Sciences
- Medical Imaging
- Pediatric Dentistry
Background:
- Handheld X-ray devices offer portability in dental imaging.
- Quantifying radiation dose is crucial for patient safety, especially in pediatric populations.
- The effectiveness of thyroid shielding in reducing radiation exposure from these devices requires evaluation.
Purpose of the Study:
- To quantify radiation dose from the Xray2Go handheld X-ray device for pediatric bitewing and anterior occlusal projections.
- To evaluate the impact of thyroid shielding on effective dose (E) and tissue equivalent doses (HT).
- To assess operator backscatter radiation levels during device use.
Main Methods:
- Utilized a pediatric phantom head with 24 tissue site dosimeters.
- Conducted exposures for bitewing (BW) and maxillary anterior occlusal (AO) projections, with and without thyroid shielding.
- Performed 30 exposures for each projection type and shielding condition.
- Measured operator backscatter radiation using dosimeters on the forehead and hand.
Main Results:
- Thyroid shielding demonstrated a statistically significant reduction in radiation dose at specific tissue sites (thyroid, lymph nodes, muscle) for BW projections.
- A significant decrease in overall effective dose (E) was observed with thyroid shielding.
- Operator backscatter radiation levels were found to be very low, indistinguishable from background radiation.
Conclusions:
- Thyroid shielding is an effective measure to reduce radiation dose during pediatric dental radiography with the Xray2Go device.
- The Xray2Go handheld X-ray device poses minimal radiation risk to the operator.
- Implementing thyroid shielding is recommended for pediatric patients undergoing bitewing radiography.
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