One-to-one comparison between digital spot compression view and digital breast tomosynthesis

Alberto Tagliafico, Davide Astengo, Francesca Cavagnetto, Raffaella Rosasco, Giuseppe Rescinito, Francesco Monetti, Massimo Calabrese

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: To assess if digital breast tomosynthesis (DBT) is at least equal to digital spot compression view (DSCV). Methods: Following institutional approval and written informed consent, both DBT and DSCV were obtained in women with a screening abnormality. The diagnostic accuracy of DBT and DSCV was evaluated by two radiologists of varying experience (Reader1 and Reader2). Results: 52 consecutive recalled women without calcification (mean age: 51 ± 12 years) underwent DSCV and DBT. Overall sensitivity was equal for both techniques (100% [95% CI, 91-100%] for DBT and 100% [95% CI, 91-100%] for DSCV). Overall specificity was higher for DBT (100% [95%CI, 91-100%]) than for DSCV (94% [95% CI, 91-100%]). Specificity for DSCV was higher for Reader1 (95% [95% CI, 91-100%]). Reader2 had lower values of specificity (92% [95% CI, 90-92%]). On DSCV, three and two false positives were recorded by Reader2 and Reader1, respectively. Overall, the area under the curve (AUC) was greater for DBT (AUC = 1) than for DSCV (AUC = 0.963). The mean difference between the two techniques was not significantly different (P = 0.43). Conclusion: In this dataset, diagnostic accuracy of digital breast tomosynthesis is at least equal to that of digital spot compression. Key Points: • Digital spot compression views (DSCVs) are often needed in breast screening programmes. • Digital breast tomosynthesis (DBT) now offers an alternative to DSCV • In recalls without calcification, DBT was at least equally accurate as DSCVs • DBT has a lower mean glandular dose than DSCVs • Thus DBT has the potential to help reduce the recall rate.

Original languageEnglish
Pages (from-to)539-544
Number of pages6
JournalEuropean Radiology
Volume22
Issue number3
DOIs
Publication statusPublished - Mar 2012

Keywords

  • Digital breast tomosynthesis
  • Digital spot compression view
  • Dose
  • Mammography
  • Recall rate

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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