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Mammographic artifacts on full-field digital mammography
Jae Jeong Choi1, Sung Hun Kim, Bong Joo Kang
1Department of Radiology, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea.
Journal of Digital Imaging
|October 12, 2013
Summary
Digital mammography artifacts occur in 3.4% of images, with patient-related issues most frequent. Direct detectors and crossed air grids showed higher artifact rates compared to indirect detectors and linear grids.
Area of Science:
- Radiology
- Medical Imaging
- Diagnostic Technology
Background:
- Artifacts in medical imaging can impact diagnostic accuracy.
- Full-field digital mammography (FFDM) is a crucial tool for breast cancer screening.
- Understanding FFDM artifact incidence is vital for optimizing image quality.
Purpose of the Study:
- To investigate the incidence of artifacts in FFDM across different systems and institutions.
- To compare artifact prevalence between direct and indirect detector types.
- To evaluate differences in artifact rates between crossed air and linear grid types.
Main Methods:
- Review of 4,440 direct and 4,142 indirect FFDM images by two radiologists.
- Classification of artifacts into patient-related, hardware-related, and software processing categories.
- Statistical comparison of artifact incidence based on detector and grid types.
Main Results:
- Overall FFDM artifact incidence was 3.4%.
- Patient-related artifacts (motion, skin lines) were most common (1.7%).
- Underexposure (0.7%) and high-density artifacts (0.5%) were also notable.
- Direct detectors and crossed air grids exhibited significantly higher artifact rates (p < 0.05).
Conclusions:
- Patient-related artifacts are the most frequent in FFDM and may be mitigated through improved patient and technologist instruction.
- Direct detector FFDM systems and crossed air grids are associated with a higher incidence of specific artifacts like underexposure and high-density issues.
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