2012年2月16日星期四

Fluoroscopy

               Fluoroscopy is the method that provides real-time X ray imaging that is especially useful for guiding a variety of diagnostic and interventional procedures. The ability of fluoroscopy to display motion is provided by a continuous series of images produced at a maximum rate of 25-30 complete images per second. This is similar to the way conventional television or video transmits images.
                The absorbed dose to a specific part of the skin and other tissues is of concern in fluoroscopy for two reasons: one is the need for minimizing the dose to sensitive organs, such as the gonads and breast, by careful positioning of the X ray beam and using shielding when appropriate. The second is the possible incidence of the radiation beam to an area of the skin for a long time that can result in radiation injuries in cases of very high exposure.
                 In fluoroscopy, as in all types of X ray imaging, the minimum exposure required to form an image depends on the specific image information requirements. An important characteristic of a fluoroscopic system is its sensitivity, the amount of exposure required to produce images. The use of intensifier tubes and more modern digital flat panel receptors make it possible to optimize the balance of patient exposure with image quality so as not to make the patient to get unnecessary radiation. Non-intensified fluoroscopy with just a fluorescent screen for a receptor should not be used because of the excessive exposure to the patient.
               Our PLX2200 is a type of high frequency Remote-Control Fluoroscopic Equipment. Besides, our c arm machine can also be used to fluoroscopy.
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