Minimizing Radiation Dose Outliers Through Systematic Analysis, Computed Tomography Technologist Education, and...

Area of Science:

• Radiology
• Medical Physics
• Healthcare Quality Improvement

Background:

• Radiation dose outliers in emergency department head CT scans pose a challenge.
• Systematic analysis of outlier causes is crucial for dose reduction.

Purpose of the Study:

• To analyze causes of radiation dose outliers in emergency department noncontrast head CTs.
• To develop and implement standardized system solutions for dose reduction.
• To audit the long-term success of implemented interventions.

Main Methods:

• A four-phase study conducted at a tertiary academic center from January 2015 to September 2017.
• Radiation dose data collection and analysis of outliers across five categories.
• Consensus evaluation of scanning parameters by radiologists and CT technologists.

Main Results:

• Initial analysis identified inappropriate scanning parameters in 9% of CTs, decreasing to 4% after interventions.
• The reduction in outliers was statistically significant (P = 0.006).
• Dose reduction remained stable for a year post-intervention.

Conclusions:

• A combined approach of dose reporting, individual case review, staff education, and systemic solutions effectively reduces radiation exposure.
• Sustained improvement in radiation dose management is achievable.
• Standardized systems are key to optimizing CT radiation doses.