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Full-field digital mammography compared to screen film mammography in the prevalent round of a population-based screening programme: the Vestfold County Study

Einar VigelandContact Information, Herman KlaasenContact Information, Tor Audun KlingenContact Information, Solveig HofvindContact Information and Per SkaaneContact Information

(1)  Department of Radiology, Vestfold Hospital, Halfdan Wilhelmsens Alle 17, 3116 Tønsberg, Norway
(2)  Department of Radiology, Aberdeen Royal Infirmary, Foresterhill AB25 2ZN, Aberdeen, Scotland, UK
(3)  Department of Pathology, Vestfold Hospital, Halfdan Wilhelmsens Alle 17, 3116 Tønsberg, Norway
(4)  The Cancer Registry of Norway, Fritjof Nansens vei 17, 0369 Oslo, Norway
(5)  Department of Radiology, Ullevaal University Hospital, Kirkeveien 166, NO-0407 Oslo, Norway

Received: 3 February 2007  Revised: 24 May 2007  Accepted: 12 July 2007  Published online: 7 August 2007

Abstract  The purpose of the study was to compare the performance of full-field digital mammography (FFDM) with soft-copy reading to screen film mammography (SFM) used during the first prevalent 2-year round of population-based screening. A total of 18,239 women aged 50–69 years were screened with FFDM as part of the Norwegian Breast Cancer Screening Programme (NBCSP). Process indicators were compared to data from 324,763 women screened with SFM using the common national database of the NBCSP. The cancer detection rates were 0.77% (140/18,239) for FFDM and 0.65% (2,105/324,763) for SFM (p = 0.058). For ductal carcinoma in situ (DCIS) alone, the results were: FFDM 0.21% (38/18,239) compared to SFM 0.11% (343/324,763) (p < 0.001). Recall rates due to positive mammography were for FFDM 4.09% (746/18,239), while for SFM 4.16% (13,520/324,764) (p = 0.645), due to technically insufficient imaging: FFDM 0.22% (40/18,239) versus SFM 0.61% (1,993/324,763) (p < 0.001). The positive predictive value (PPV) in the FFDM group was 16.6% (140/843), while 13.5% (2,105/15,537) for SFM (p = 0.014). No statistically significant differences were recorded concerning histological morphology, tumour size, or lymph node involvement. In conclusion FFDM had a significantly higher detection rate for DCIS than SFM. For invasive cancers no difference was seen. FFDM also had a significantly higher PPV and a significantly lower technical recall rate.

Keywords  Breast cancer - Mammography - Mass screening


Contact Information Einar Vigeland (Corresponding author)
Email: einar.vigeland@siv.no

Contact Information Herman Klaasen
Email: h.klaasen@nhs.net

Contact Information Tor Audun Klingen
Email: tor.klingen@siv.no

Contact Information Solveig Hofvind
Email: solveig.hofvind@kreftregisteret.no

Contact Information Per Skaane
Email: per.skaane@ulleval.no

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  1. Bick, U. (2008) Workflow in der digitalen Screeningmammographie. Der Radiologe
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