Digital breast tomosynthesis versus digital mammography: a clinical performance study.

Area of Science:

• Radiology and Medical Imaging
• Oncology
• Diagnostic Procedures

Background:

• Digital breast tomosynthesis (DBT) is an advanced imaging technique for breast cancer screening.
• Full-field digital mammography (FFDM) is the current standard for mammography.
• Comparing the diagnostic efficacy of these two modalities is crucial for clinical practice.

Purpose of the Study:

• To compare the clinical performance of DBT versus FFDM in a diagnostic setting.
• To evaluate the diagnostic accuracy of DBT in identifying malignant breast lesions.
• To assess the performance of DBT at a radiation dose comparable to FFDM.

Main Methods:

• 200 women with suspicious breast lesions underwent DBT (one view, MLO) and FFDM (two views, CC and MLO).
• Images were interpreted by six radiologists using the Breast Imaging Reporting and Data System (BIRADS) score.
• Multiple-reader multiple-case (MRMC) receiver-operating characteristic (ROC) analysis was performed to compare diagnostic performance.

Main Results:

• The overall clinical performance for detecting malignant cases was not significantly different between DBT and FFDM (AUCs 0.851 vs 0.836, p=0.645).
• The lower limit of the 95% confidence interval for the difference in AUCs was -4.9%, indicating non-inferiority.
• No significant difference in diagnostic accuracy was observed between the two imaging techniques.

Conclusions:

• Clinical performance of single-view DBT at a dose comparable to standard FFDM is not inferior to two-view FFDM.
• DBT offers a potentially effective alternative for breast lesion diagnosis.
• Further research may explore multi-view DBT protocols for enhanced diagnostic capabilities.