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Digital vs. Analog Mammography

such as risk probability analysis or other pertinent personal history data for improved decision-making.
  • The ability to electronically archive films. This not only reduces the risk of misplacing or damaging films, but provides for immediate electronic transmittal via the Internet for a second opinion, regardless of where the physician in located. Digital imaging is also ideal for telemedicine and mobile mammography, with units able to transfer digital images thousands of miles with no loss of viability.
  • Exams take less than half the time as with conventional, film-based mammograms, with a digitally displayed image available in about 10 seconds, compared to two minutes for a conventional film mammogram, which must then be developed.
  • Fewer patient callbacks because the ability to generate images within seconds and the flexibility to magnify and manipulate those images eliminate many call backs necessary with traditional film-based mammography systems.

    Several small trials suggest certain efficacies of full-field digital imaging over film-based screening. For instance, one study published in the journal Medical Physician, found that full-field digital mammography optimized low-contrast lesion detection by using a softer x-ray beam for thin breasts and a harder x-ray beam for thick breasts, resulting in superior detection compared to screen-film mammography for all but the thinnest breasts.

    Another analysis of the comparative performance of 18 digital mammography systems and 38 screen-film mammography systems showed that digital systems generally improve image quality for equal or lower breast doses, and provide tighter control on exposures and image quality.

    To determine the overall efficacy and accuracy of digital mammography compared to conventional mammography, the National Cancer Institute (NCI) and the American College of Radiology Imaging Network (ACRIN) launched in 2001 a large-scale, multicenter trial to compare t
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