Purpose
To compare one-view DBT and two-view FFDM in detection of breast lesion using histology as reference standard.
Methods and Materials
Forty-six patients (aged 59±11 years) with at least one breast lesion detected at screening (n=10) or diagnostic (n=36) FFDM underwent mediolateral oblique DBT (Giotto Tomo,
IMS,
Bologna,
Italy).
An independent dedicated breast radiologist reviewed all examinations (time interval at least 30 days).
For each lesion,
a BIRADS score was assigned both at FFDM and DBT.
The BIRADS score distributions of FFDM and DBT were compared using the Wilcoxon test and the Cohen k coefficient.
Considering BIRADS 1 and 2 as negative and BIRADS 4 and...
Results
A total of 54 lesions were detected (14 of them being invasive).
Considering the five BIRADS score system (B1,B2,B3,B4,B5),
the distribution at FFDM was (10,3,9,20,12),
while that of DBT was (4,4,15,14,17).
The BIRADS distribution of DBT was significantly shifted towards more clinically relevant scores respect the BIRADS of FFDM (p=0.048),
corresponding to a poor between-technique agreement (Cohen k=0.351).
Sensitivity of FFDM was 29/29 (100%; CI 88-100%),
that of DBT was 28/29 (97%; 82-100%).
In one patient DBT showed a bilateral tumor with only one lesion...
Conclusion
This preliminary study shows a diagnostic performance of one-view DBT at least equivalent to that of two-view FFDM.
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