Table 1: Sensitivity for contrast media under conventional CT. CT numbers were measured from the images acquired under various kVp with diluted contrast media of 5-20 mgI/mL via conventional scans. The sensitivity was calculated by normalizing each CT number with the CT number at 120 kVp (100% at 120 kVp).

Contrast mediaTube voltage
70kVp80kVp100kVp120kVp140kVp

5mgI/mL1.91.61.21.00.9
10mgI/mL1.91.61.21.00.9
15mgI/mL2.01.61.21.00.9
20mgI/mL2.01.61.21.00.8

SIEMENS SOMATOM Definition Flash