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Multiple Comparison Tests

Multiple Comparison Tests

Multiple comparison test, abbreviated as MCT, is a post hoc analysis generally performed after comparing multiple samples with one or more tests. An MCT will help identify a significantly different sample among multiple samples or a factor among multiple factors.
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...

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Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns

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Published on: August 30, 2013

Analysis of Technical Repeat Studies in Screening Mammography.

Sarah Martaindale¹, Tanya Moseley^1,2, Lumarie Santiago¹

¹The University of Texas MD Anderson Cancer Center, Department of Breast Imaging, Houston, TX, USA.

Journal of Breast Imaging

|July 31, 2023

Summary

Technical recalls in mammography are most often due to motion or positioning issues. Differences in these technical recall reasons exist between mobile and fixed mammography units.

Keywords:

EQUIP MQSA screening mammography technical recall

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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.