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30.07.2021 | Breast

Virtual clinical trial to compare cancer detection using combinations of 2D mammography, digital breast tomosynthesis and synthetic 2D imaging

verfasst von: Alistair Mackenzie, Emma L. Thomson, Melissa Mitchell, Premkumar Elangovan, Chantal van Ongeval, Lesley Cockmartin, Lucy M. Warren, Louise S. Wilkinson, Matthew G. Wallis, Rosalind M. Given-Wilson, David R. Dance, Kenneth C. Young

Erschienen in: European Radiology | Ausgabe 2/2022

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Abstract

Objectives

This study was designed to compare the detection of subtle lesions (calcification clusters or masses) when using the combination of digital breast tomosynthesis (DBT) and synthetic mammography (SM) with digital mammography (DM) alone or combined with DBT.

Methods

A set of 166 cases without cancer was acquired on a DBT mammography system. Realistic subtle calcification clusters and masses in the DM images and DBT planes were digitally inserted into 104 of the acquired cases. Three study arms were created: DM alone, DM with DBT and SM with DBT. Five mammographic readers located the centre of any lesion within the images that should be recalled for further investigation and graded their suspiciousness. A JAFROC figure of merit (FoM) and lesion detection fraction (LDF) were calculated for each study arm. The visibility of the lesions in the DBT images was compared with SM and DM images.

Results

For calcification clusters, there were no significant differences (p > 0.075) in FoM or LDF. For masses, the FoM and LDF were significantly improved in the arms using DBT compared to DM alone (p < 0.001). On average, both calcification clusters and masses were more visible on DBT than on DM and SM images.

Conclusions

This study demonstrated that masses were detected better with DBT than with DM alone and there was no significant difference (p = 0.075) in LDF between DM&DBT and SM&DBT for calcifications clusters. Our results support previous studies that it may be acceptable to not acquire digital mammography alongside tomosynthesis for subtle calcification clusters and ill-defined masses.

Key Points

• The detection of masses was significantly better using DBT than with digital mammography alone.

• The detection of calcification clusters was not significantly different between digital mammography and synthetic 2D images combined with tomosynthesis.

• Our results support previous studies that it may be acceptable to not acquire digital mammography alongside tomosynthesis for subtle calcification clusters and ill-defined masses for the imaging technology used.

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Titel: Virtual clinical trial to compare cancer detection using combinations of 2D mammography, digital breast tomosynthesis and synthetic 2D imaging
verfasst von: Alistair Mackenzie
Emma L. Thomson
Melissa Mitchell
Premkumar Elangovan
Chantal van Ongeval
Lesley Cockmartin
Lucy M. Warren
Louise S. Wilkinson
Matthew G. Wallis
Rosalind M. Given-Wilson
David R. Dance
Kenneth C. Young
Publikationsdatum: 30.07.2021
Verlag: Springer Berlin Heidelberg
Erschienen in: European Radiology / Ausgabe 2/2022
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-021-08197-x

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Virtual clinical trial to compare cancer detection using combinations of 2D mammography, digital breast tomosynthesis and synthetic 2D imaging