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  • Title: Comparison of screen-film and full-field digital mammography in Japanese population-based screening.
    Author: Yamada T, Saito M, Ishibashi T, Tsuboi M, Matsuhashi T, Sato A, Saito H, Takahashi S, Onuki K, Ouchi N.
    Journal: Radiat Med; 2004; 22(6):408-12. PubMed ID: 15648457.
    Abstract:
    PURPOSE: To investigate how the greater contrast of full-field digital mammography (FFDM) affects the detection of suspicious lesions in Japanese population-based screening. MATERIALS AND METHODS: Screen-film mammography (SFM) and FFDM were performed in 480 women aged 50 years or more. A set of mediolateral oblique views was obtained with each modality. All mammograms were independently double-read. The five-scale category assessment and type of finding using the Breast Imaging Reporting and Data system (BI-RADS) nomenclature were given. Intraobserver variance, recall rates, and positive predictive value were calculated. RESULTS: The findings between the two modalities were discordant. kappa-values for each reader were 0.619 and 0.385, respectively. Almost half of the microcalcifications were called with both modalities. The detection of masses was less concordant between the readers (27%). The masses were detected more frequently with FFDM (73%). Other findings were only detected with one modality. The recall rate was not significantly different (2.9% with SFM vs. 4.2% with FFDM; p=0.253). The positive predictive value was not significantly different (14% with SFM vs. 10% with FFDM; p=0.69), either. Two patients with breast cancer were detected with both modalities. CONCLUSION: Recall rates and positive predictive value were not significantly different between SFM and FFDM. Cancers were detected with both modalities.
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