What is the different between digital mammography and screen-film mammography, both intrinsically and from a procedural angle?
A. The actual procedure to take the mammogram is the same for both screening methods. With screen-film mammography, though, the virtual image is recorded on a photographic film, just like in conventional radiology. The films then needs to be developed with chemicals, and then read on a lighted screen. With digital mammography, the virtual image is recorded by means of an electronic system, and the image can be immediately displayed on a monitor. X-ray exposure doses are similar, although they may be reduced with digital mammography. Q. What are the benefits and drawbacks of the two technologies? A. The mammography unit for screen-film mammography is cheaper for the medical institution, but it does necessitate the use of chemicals, a viewer, and a physical archive. The digital mammography unit is more costly, but it can be displayed on a monitor, images can be sent almost everywhere through the Web, archiving is electronic, and computer analysis of images (CAD – computer aided detection
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