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Which of the following are typical features of a mammography set? a. The automatic exposure control (AEC) detector is placed behind the cassetteb. The anode does not rotate c. Multiple targets and filters are used d. A variable field size is used e. A small-field digital system is used for stereo localization |
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Answer» a. True. In general radiography, the AEC detector is normally placed between the patient and the film. However, if this were the case in mammography, the AEC device would be visible on the images and for this reason, the AEC detector is placed behind the cassette. b. False. If the anode did not rotate, it would not cope with being heated. c. True. d. False. Mammographic equipment has fixed field sizes, normally 18 x 24 cm and 24 x 30 cm. e. True. Small-field digital technology is now the standard method used for stereo localization. When a small-field digital system is used for stereo localization, the image is normally available within 30 s of the exposure and no film handling is required. This significantly reduces the procedure time, which means that movement of the patient is a much smaller issue. It also reduces the total time for the procedure. |
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