Verification of the Dose Reduction Effect via Diluted Injection in Dual-Energy Computed Tomography Using a Human Blood Flow Phantom

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 media	Tube voltage
	70kVp	80kVp	100kVp	120kVp	140kVp
5mgI/mL	1.9	1.6	1.2	1.0	0.9
10mgI/mL	1.9	1.6	1.2	1.0	0.9
15mgI/mL	2.0	1.6	1.2	1.0	0.9
20mgI/mL	2.0	1.6	1.2	1.0	0.8

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