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Reducing of Craniofacial Radiation Dose Using Automatic Exposure Control Technique in the 64 Multi-Detector Computed Tomography

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Fig.  1.  (a)  Setting  phantom  of  head  on  the  CT  gantry  (b)  scout  lateral  view  of  three  regions  in  the  head  phantom.여  검사하는  CT  뇌관류(brain  perfusion)  영상  검사는  2009년 식품 의약품안전청에서 발행간 의료기기 안전성 서한에 의하면  과도한  방사선  피폭위험이  있다고  보고하였다.11)그러므로
Table 1. The modulation strength setting of automatic exposure control.
Fig.  2.  Location  in  the  region  of  interest  for  the  head  phantom.  (a)  1  segment  (b)  2  segment  (c)  3  segment.
Fig.  3.  Change  of  effective  mAs  for  the  head  phantom  by  the  modulation  strength  setting  of  automatic  exposure  control.

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