Fig. 4From: Influence of spectral shaping and tube voltage modulation in ultralow-dose computed tomography of the abdomen Ultralow-dose images of a cadaveric specimen’s right kidney (CTDIvol = 0.5 mGy) with all investigated tube voltage settings. Note the increased image noise and pronounced hypodense streak artifacts due to photon starvation in conventional images without spectral shaping, particularly evident at 80 kVp (right image)Back to article page