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Bjørn Helge Østerås
Researcher at Oslo University Hospital
Publications - 13
Citations - 332
Bjørn Helge Østerås is an academic researcher from Oslo University Hospital. The author has contributed to research in topics: Digital mammography & Tomosynthesis. The author has an hindex of 7, co-authored 13 publications receiving 225 citations. Previous affiliations of Bjørn Helge Østerås include University of Oslo.
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Journal ArticleDOI
Digital Mammography versus Digital Mammography Plus Tomosynthesis in Breast Cancer Screening: The Oslo Tomosynthesis Screening Trial.
Per Skaane,Andriy I. Bandos,Loren T. Niklason,Sofie Sebuødegård,Bjørn Helge Østerås,Randi Gullien,David Gur,Solveig Hofvind +7 more
TL;DR: Addition of digital breast tomosynthesis to digital mammography resulted in significant gains in sensitivity and specificity, and Synthetic mammography in combination with digital breastTomosynthesis had similar sensitivity and Specificity to digital Mammography in conjunction with computer-aided detection.
Journal ArticleDOI
Performance of breast cancer screening using digital breast tomosynthesis: results from the prospective population-based Oslo Tomosynthesis Screening Trial.
Per Skaane,Sofie Sebuødegård,Andriy I. Bandos,David Gur,Bjørn Helge Østerås,Randi Gullien,Solveig Hofvind +6 more
TL;DR: DBT-supplemented screening resulted in significant increases in screen-detected cancers and specificity, however, no significant change was observed in the rate, size, node status, or grade of interval cancers.
Journal ArticleDOI
Digital Mammography versus Breast Tomosynthesis: Impact of Breast Density on Diagnostic Performance in Population-based Screening.
TL;DR: Digital breast tomosynthesis enabled the detection of more cancers in all density and age groups compared with digital mammography, especially cancers classified as spiculated masses and architectural distortions.
Journal ArticleDOI
Classification of fatty and dense breast parenchyma: comparison of automatic volumetric density measurement and radiologists' classification and their inter-observer variation.
Bjørn Helge Østerås,Anne Catrine Trægde Martinsen,Siri Helene Bertelsen Brandal,Khalida Nasreen Chaudhry,Ellen B. Eben,Unni Haakenaasen,Ragnhild Sørum Falk,Per Skaane +7 more
TL;DR: The optimal volumetric threshold of 10% using automatic assessment would classify breast parenchyma as fatty or dense with substantial accuracy and consistency compared to radiologists’ BI-RADS categorization, which suffers from high inter-observer variation.
Journal ArticleDOI
Average glandular dose in paired digital mammography and digital breast tomosynthesis acquisitions in a population based screening program: effects of measuring breast density, air kerma and beam quality.
Bjørn Helge Østerås,Bjørn Helge Østerås,Per Skaane,Per Skaane,Randi Gullien,Anne Catrine Trægde Martinsen,Anne Catrine Trægde Martinsen +6 more
TL;DR: To compare average glandular dose (AGD) for same-compression digital mammography (DM) and digital breast tomosynthesis (DBT) acquisitions in a population based screening program, with and without breast density stratification, as determined by automatically calculated breast density (Quantra™).