Paula Martinez Miravete, Presenter: Nothing to Disclose

Mercedes Sainz, Abstract Co-Author: Nothing to Disclose

Amaia Garcia-Lallana, Abstract Co-Author: Nothing to Disclose

Carmen Minguillon, Abstract Co-Author: Nothing to Disclose

Isabel Simon, Abstract Co-Author: Nothing to Disclose

Guillermo Viteri MD, Abstract Co-Author: Nothing to Disclose

Luis Javier Pina MD, PhD, Abstract Co-Author: Nothing to Disclose

To evaluate the detection rate of breast cancer using Digital Tomosynthesis as an additional tool combined with digital mammography in ACR density patterns 2, 3 and 4 in a clinical setting.

Retrospective study. From December 2010 to December 2011, a total number of 5718 Combo studies (2D-Digital mammography plus Tomosynthesis) were performed at our institution. 5603 cases were found to have ACR density patterns 2, 3 and 4. We evaluated the additional cancers detected on Tomosynthesis in these three density groups. Statistical analysis was performed calculating the Pearson Chi-square test and using the SPSS software.

133 breast tumours were detected on conventional digital mammography (detection rate 1.5 %). Forty seven additional cancers were detected on Tomosynthesis and not seen on standard mammograms: 9 cases on ACR 2 (the detection rate was increased 0.65 %), 20 cases in ACR 3 (0.92 %) and 18 cases in ACR 4 (0.87 %). No statistical differences were found in the detection rate among the three patterns (p=0.66). Tomosynthesis increased the detection rate 0.83 %, so the total detection rate using the combo studies was 2.33 %.

The addition of Digital Tomosynthesis increases the detection rate from 1.5 % to 2.33 %. There are not significant differences among the three ACR density patterns, so Digital Tomosynthesis can be useful not only in dense patterns but also in pattern 2.

Our results show that additional Tomosynthesis increases the detection rate by 0.83% and there are not significant differences among the three ACR density patterns 2, 3 and 4.

Martinez Miravete, P, Sainz, M, Garcia-Lallana, A, Minguillon, C, Simon, I, Viteri, G, Pina, L, The Role of Additional Digital Tomosynthesis Combined with Digital Mammography.  Radiological Society of North America 2012 Scientific Assembly and Annual Meeting, November 25 - November 30, 2012 ,Chicago IL. http://archive.rsna.org/2012/12025341.html