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Keywords:
Breast, Mammography, Diagnostic procedure, Cancer
Authors:
P. MARTÍNEZ MIRAVETE1, M. Millor Muruzábal2, P. García-Barquín2, A. Elizalde2, L. J. Pina Insausti2, J. Etxano2, P. Bartolomé2; 1Zaragoza/ES, 2Pamplona/ES
DOI:
10.1594/ecr2015/B-0211
Methods and materials
Patients selection
From September 2013 to September 2014 we began to use the synthesized-DM and the COMBO mode (2D-DM + DBT).
A total number of 8201 consecutive COMBO studies were performed at our institution in a clinical setting.
Synthesized reconstruction images were obtained from all DBT studies.
The informed consent was offered to all patients.
All the studies were performed using a Selenia Dimensions unit (Hologic,
USA).
Study design
We retrospectively selected an enriched sample with 136 patients (136 women,
medium age of 48.4 years (21-88)).
All patients underwent both techniques 2D-DM and synthesized-DM.
The reading modes included standard craniocaudal (CC) and mediolateral-oblique (MLO) views of each breast.
Two independent breast radiologists reviewed all the studies and classified them according to ACR density pattern (BIRADS edition 2013) [4] in both techniques as:
- ACR a: if the breast are almost entirely fatty.
- ACR b: if there are scattered areas of fibroglandular density.
- ACR c: if we can identify a heterogeneously dense breast tissue,
which may obscure detection of small masses.
- And ACR d: if the breasts are extremely dense,
which lowers the sensitivity of mammography.
Statistical analysis
Intraobserver and interobserver Kappa concordance indexes were calculated using SPSS 20.0 software.