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Updated: Aug 6, 2026

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
Published on: September 11, 2011
Effective dose from radiation absorbed during a panoramic examination with a new generation machine
1Department of Oral and Maxillofacial Imaging, University of Southern California, Los Angeles, CA 90089-0641, USA.
The new Planmeca PM 2002 CC Proline panoramic X-ray machine has a low whole-body effective dose (E) of 3.85 microSv. This dose is significantly lower than the average for panoramic exams and much less than intraoral dental radiography.
Area of Science:
- Radiological Sciences
- Medical Physics
- Dental Imaging
Background:
- Dental radiography utilizes ionizing radiation, necessitating dose assessment for patient safety.
- Panoramic radiography offers a broad view but requires dose evaluation compared to other modalities.
- New equipment necessitates updated radiation dose measurements.
Purpose of the Study:
- To measure tissue-absorbed dose and calculate whole-body effective dose (E) for the Planmeca PM 2002 CC Proline panoramic machine.
- To compare radiation dose metrics of this new panoramic unit with historical data.
- To establish effective dose estimates for panoramic dental radiography.
Main Methods:
- Utilized a humanoid, tissue-equivalent phantom with embedded thermoluminescent dosimeters.
- Measured absorbed doses at anatomically significant sites across 25 panoramic exposures.
- Calculated whole-body effective dose (E) from average single-exposure tissue-absorbed doses.
Main Results:
- The whole-body effective dose (E) for the Planmeca PM 2002 CC Proline was 3.85 microSv.
- This dose is below the panoramic average of 6.7 microSv.
- The PM 2002 CC Proline's effective dose is 5%–12% of a complete mouth intraoral radiographic examination.
Conclusions:
- The Planmeca PM 2002 CC Proline delivers an effective dose at the lower end of the range for panoramic machines.
- Radiation dose from this panoramic examination is substantially lower than intraoral examinations using D-speed or E-speed film.
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