Radiation dose measurement in gastrointestinal studies

Area of Science:

• Radiology
• Medical Physics
• Diagnostic Imaging

Background:

• Barium studies (swallow, meal, enema) are routine radiological examinations using barium sulfate for gastrointestinal tract contrast.
• Quantifying patient radiation doses is crucial for safety and protocol optimization.

Purpose of the Study:

• To quantify patient radiation doses during barium swallow, meal, and enema procedures.
• To estimate organ equivalent dose and effective dose for these common investigations.

Main Methods:

• Thermoluminescence dosemeters were used to measure radiation doses in 33 barium study investigations.
• Patient entrance surface doses and effective doses were calculated for each procedure type.

Main Results:

• Mean entrance surface doses were 12.6 ± 10 mGy (swallow), 44.5 ± 49 mGy (meal/follow-through), and 35.7 ± 50 mGy (enema).
• Mean effective doses were 0.2 mSv (swallow), 0.35 mSv (meal), and 1.4 mSv (enema).
• Radiation doses were found to be comparable with findings from previous studies.

Conclusions:

• Standardized protocols for barium studies can reduce inter-operator variability.
• Implementing consistent protocols is essential for minimizing unnecessary patient radiation exposure.
• The findings provide baseline data for radiation dose optimization in gastrointestinal radiology.