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Updated: Jul 21, 2026

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

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

Published on: August 30, 2013

A study on effectiveness of screening mammograms.

J J Ren¹, P G Peer

¹Department of Mathematics, Tulane University, New Orleans, LA 70118, USA. renj@ultral.math.tulane.edu

International Journal of Epidemiology

|October 18, 2000

Summary

Biennial mammograms are insufficient for detecting primary breast cancer in women under 70. For women over 70, this screening frequency may be adequate for early cancer detection.

Area of Science:

Oncology
Radiology
Biostatistics

Background:

Mammographic screening interval is crucial for early breast cancer detection.
No randomized controlled trials have confirmed mortality reduction with screening intervals of 2 years or more for women under 50.
The effectiveness of screening frequency requires further investigation.

Purpose of the Study:

To evaluate the effectiveness of biennial mammographic screening in detecting primary breast cancer.
To compare tumor detection ages between biennial screening alone and screening combined with symptom development.
To analyze screening frequency's impact on different age groups.

Main Methods:

Utilized data from women in a serial screening program with a 2-year interval.

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Employed statistical methods including bootstrap and EM algorithm for distribution estimation.

Compared tumor detection age distributions under different screening scenarios.

Main Results:

A statistically significant difference in detection age distributions was observed for women younger than 50 and those aged 50-70.
No significant difference was found for women over 70 years.
Biennial screening proved insufficient for detecting primary breast cancer in younger age groups.

Conclusions:

Mammograms every other year are inadequate for detecting primary breast cancer in women under 70.
The current biennial screening interval may be sufficient for women over 70.
Screening frequency recommendations should be age-specific for optimal breast cancer detection.