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Updated: Jul 9, 2026
08:30
X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
Published on: September 11, 2011
Radiation doses from common radiographic procedures: a ten year perspective.
1Dept of Medical Engineering & Physics, St Vincent's Hospital-Melbourne, Fitzroy VIC 3065. heggiejc@svhm.org.au
Summary
Computed Radiography (CR) implementation generally reduced patient doses, except for chest X-rays, which saw a significant increase due to variable CR system speeds and image noise tolerance.
Area of Science:
- Medical Imaging Physics
- Radiological Protection
Background:
- Computed Radiography (CR) technology adoption in medical imaging.
- Need to evaluate patient radiation doses post-CR implementation.
- Historical dose data from 1988 for comparison.
Purpose of the Study:
- To assess patient radiation doses (Entrance Surface Dose and Effective Dose) for plain film radiography after CR implementation.
- To compare current doses with historical data.
- To identify factors influencing dose variations.
Main Methods:
- Semi-empirical modeling to evaluate patient doses.
- Analysis of plain film radiographic procedures.
- Comparison of dose data before and after CR implementation.
Main Results:
- Overall decrease in patient doses for most radiographic procedures following CR implementation.
- Statistically insignificant dose reductions in many cases.
- A significant increase (≥18%) in patient dose for PA chest radiography post-CR.
Conclusions:
- CR technology has led to dose reductions in many procedures, but not universally.
- Chest radiography PA view shows a notable dose increase, linked to CR system speed and acceptable image noise levels.
- Radiologist acceptance of image noise in CR systems is a key factor in dose adjustments.
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