Analysis of Technical Repeat Studies in Screening Mammography

Area of Science:

• Radiology
• Medical Imaging
• Quality Improvement

Background:

• Technical repeats in mammography can impact diagnostic accuracy and workflow efficiency.
• Understanding the causes of technical recalls is crucial for improving screening mammography quality.

Purpose of the Study:

• To identify the primary causes of technical repeats in screening mammography.
• To determine if technical recall reasons differ between mobile and fixed mammography units.
• To evaluate the effectiveness of repeat imaging in resolving technical deficiencies.

Main Methods:

• Retrospective review of Enhancing Quality Using the Inspection Program (EQUIP) logs for screening mammography technical repeats.
• Analysis of data from March 2017 to December 2018 for fixed units and April 2017 to December 2018 for mobile units.
• Statistical analysis using frequency tables and Fisher's exact tests to compare mobile and fixed units.

Main Results:

• Motion (56.0%) and positioning/excluded tissue (33.2%) were the most frequent reasons for technical recalls.
• Significant differences in technical deficiencies were observed between mobile and fixed units for motion, skin folds, and positioning.
• Repeat imaging led to improvement in most recalled mammograms (93% and 80% by two auditors).

Conclusions:

• Motion and positioning/excluded tissue are the leading causes of screening mammography technical recalls.
• Differences in technical recall reasons between mobile and fixed units may be attributed to variations in patient populations.
• Repeat imaging is an effective method for resolving most technical mammography deficiencies.