Fig. 1
From: Noise insertion in CT for cocaine body packing: where is the limit of extensive dose reduction?
A 22-year-old body packer, who was examined with 80 kVp and automated tube current modulation (tube current time product: 88 mAs, effective dose at 100%: 1.16 mSv). The axial reconstructions (soft tissue window, window level 40/300) with stepwise reduced dose levels (100%, 50%, 10%, 5%, and 1%) show multiple liquid body packets (white arrows) which are hyperattenuating compared to the surrounding bowel content. While differentiation of bowel and that of urinary bladder decrease within stepwise dose reduction, liquid cocaine remains easily detectable with only 1% of initial radiation dose (effective dose: 0.01 mSv)