Mammographic density: Comparison of visual assessment with fully automatic calculation on a multivendor dataset
FOS: Computer and information sciences
Electronic Data Processing
Computer Vision and Pattern Recognition (cs.CV)
automated system; BI-RADS density classification; breast density; digital mammography; multireader/multivendor
Computer Science - Computer Vision and Pattern Recognition
Reproducibility of Results
FOS: Physical sciences
Breast Neoplasms
Physics - Medical Physics
3. Good health
03 medical and health sciences
0302 clinical medicine
ROC Curve
Breast density; Mammography; Medical imaging; ROC Curve; Reproducibility of Results; Image processing
Humans
Female
Medical Physics (physics.med-ph)
Mammary Glands, Human
Breast Density
Mammography
Neoplasm Staging
DOI:
10.1007/s00330-015-3784-2
Publication Date:
2015-04-30T08:24:43Z
AUTHORS (28)
ABSTRACT
Objectives: To compare breast density (BD) assessment provided by an automated BD evaluator (ABDE) with that provided by a panel of experienced breast radiologists, on a multivendor dataset. Methods: Twenty-one radiologists assessed 613 screening/diagnostic digital mammograms from 9 centers and 6 different vendors, using the BI-RADS a, b, c, and d density classification. The same mammograms were also evaluated by an ABDE providing the ratio between fibroglandular and total breast area on a continuous scale and, automatically, the BI-RADS score. Panel majority report (PMR) was used as reference standard. Agreement (k) and accuracy (proportion of cases correctly classified) were calculated for binary (BI-RADS a-b versus c-d) and 4-class classification. Results: While the agreement of individual radiologists with PMR ranged from k=0.483 to k=0.885, the ABDE correctly classified 563/613 mammograms (92%). A substantial agreement for binary classification was found for individual reader pairs (k=0.620, standard deviation [SD]=0.140), individual versus PMR (k=0.736, SD=0.117), and individual versus ABDE (k=0.674, SD=0.095). Agreement between ABDE and PMR was almost perfect (k=0.831). Conclusions: The ABDE showed an almost perfect agreement with a 21-radiologist panel in binary BD classification on a multivendor dataset, earning a chance as a reproducible alternative to visual evaluation.
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