Fig. 3
From: Noise insertion in CT for cocaine body packing: where is the limit of extensive dose reduction?
A 40-year-old body packer, who was examined with 80 kVp and automated tube current modulation (tube current time product: 134 mAs, effective dose at 100%: 1.97 mSv). The axial reconstructions (soft tissue window, window level 40/300) with stepwise dose reduction (100%, 50%, 10%, 5%, and 1%) show multiple solid body packets (white curved arrows), which remained easily detectable at only 1% of initial dose (0.02 mSv). The liver cyst (white arrows) was missed by all readers at dose level 5% and 1%