MATERIALS AND METHODS: Institutional review advance approval and the need for informed consent were waived for this HIPAA-complaint study. Practice canvass data were obtained for three breast imaging radiologists from 2004 to 2009. These data were grouped by time period into the following groups: service line (2004-2005), digital yr 1 (2007), digital year 2 (2008), and digital year 3 (2009). The ?(2) and Fisher exact tests were used to value differences in proportions among and between years. Clinical outcomes based on lesion emblem from 2004 to 2008 were also compared. Computer-aided detection was used.
RESULTS: The three radiologists interpreted 32?600 screen-film mammograms and 33?879 digital mammograms. Recall rates add-ond from 6.0% at baseline to 7.1% in digital year 1 (P < .0001) and continued to increase in attendant years to 8.5%. The cancer detection rate change magnitude from 3.3 at baseline to 5.3 in digital year 1 (P = .0061), and it remained higher than that at baseline in subsequent years. PPV after masking piece mammogaphy (PPV(1)) increased from 5.6% at baseline to 7.
5% in digital year 1 and returned to baseline levels in digital year 3. In contrast, PPV after biopsy (PPV(3)) decreased from 44.5% at baseline to 30.3% in digital year 3 (P = .0021). From 2004 to 2008, 3444 patients with 3493 lesions were recalled. The percentage of recalls for calcifications increased from 13.8% at baseline to a peak of 23.9% in digital year 1 and 17.9% in digital year 2. both PPV(1) and PPV(3) decreased for calcifications after the digital transition.
CONCLUSION: Recall rate and cancer detection rate increase for at least(prenominal) 2 years after the transition to digital screening mammography. PPV(3) is significantly reduced after digital transition, primarily in patients with...If you want to get a full essay, order it on our website: Orderessay
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