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Updated: Jun 20, 2026
08:30
X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
Published on: September 11, 2011
[Evaluation of exposure dose for panoramic radiography]
Yoshihiko Hoshino1, Yasuhiro Fukushima, Takayuki Sutou
1Department of Radiology, Gunma University Hospital.
Nihon Hoshasen Gijutsu Gakkai Zasshi
|September 2, 2009
Summary
Researchers propose a new method using the panoramic radiology dose index (PRDI) to establish diagnostic reference levels for panoramic X-rays. This approach measures the maximum radiation dose from the exposure focus, offering a standardized approach for quality control.
Area of Science:
- Radiological Physics
- Medical Imaging Technology
- Radiation Dosimetry
Context:
- Establishing diagnostic reference levels (DRLs) is crucial for optimizing radiation dose in medical imaging.
- Panoramic radiology, widely used in dentistry and maxillofacial imaging, lacks a standardized method for determining DRLs.
- Existing methods for dose assessment, like CT dose index (CTDI), share principles with panoramic radiology dose index (PRDI).
Purpose:
- To evaluate the utility of the panoramic radiology dose index (PRDI) for establishing a diagnostic reference level in panoramic radiology.
- To propose a novel method for assessing DRLs in panoramic imaging by measuring the maximum radiation dose.
Summary:
- A method was developed using an imaging plate and acrylic disks to analyze horizontal radiation dose distribution.
- Panoramic exposure dose was measured at the tracking focus using a CT ionizing chamber.
- The panoramic radiology dose index (PRDI) was normalized and calculated, yielding 0.74 mGy for medium-sized individuals.
Impact:
- This study suggests a practical method for evaluating diagnostic reference levels in panoramic radiology.
- The proposed method enables consistent dose assessment and quality control in panoramic imaging.
- Implementing this method can contribute to minimizing radiation exposure while maintaining diagnostic image quality.
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