Image quality of digital direct flat-panel mammography versus an analog screen-film technique using a low-contrast phantom

AJR. American Journal of Roentgenology
Kathrin Barbara KrugKlaus Lackner

Abstract

The objective of our study was to compare the detectability and distinguishability of simulated soft-tissue opacities of 50 variants of an anthropomorphic breast phantom in mammograms acquired with a digital direct flat-panel detector versus an analog system; we also compared the image settings "analog film," "digital film," and "digital monitor." The studies were performed on digital (Lorad Selenia) and analog (Mammomat 3) mammography systems. Four hundred fifty silicone cubes devised with different randomly distributed columns, holes, or both columns and holes (diameter, 3-7 mm; height, 0.5-4.0 mm) were used as test bodies. One experimental series was performed with a silicone scatter body and one with a silicone and an anthropomorphic ground-meat scatter body. All x-rays were obtained at identical settings and exposures. Four radiologists rated the films and monitor-displayed images independently of each other in randomized order on a standardized electronic questionnaire. The digital monitor technique generally scored better than digital film viewing and analog readings. The McNemar test for multiple paired comparisons mostly yielded a p value of < 0.0005. The smallest volume category counted as the most valid test scenario...Continue Reading

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Jan 24, 2007·AJR. American Journal of Roentgenology·Kathrin Barbara KrugKlaus Lackner
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Citations

Aug 19, 2015·European Journal of Cancer : Official Journal for European Organization for Research and Treatment of Cancer (EORTC) [and] European Association for Cancer Research (EACR)·Ursula NestleWerner Vach
Oct 23, 2010·AJR. American Journal of Roentgenology·Pamela T JohnsonElliot K Fishman
Oct 23, 2010·AJR. American Journal of Roentgenology·Pamela T JohnsonElliot K Fishman

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