Table 2. Dual-energy CT characteristics of the individual included studies.

Reference	DECT brand	DECT type	kV1	kV2	Tube current	Slice thickness (mm)	Collimation	Rotation time (s)	Contrast	Dose	Flow rate	Arterial phase (s)	Venous phase (s)
Zou et al. 2021	Siemens	Dual source	N	N	600 mA	1	64 mm ×0.6 mm	N	Iohexol	1 mL/kg	3 mL/s	25	45
Zhuo et al. 2021	Siemens	Dual source	90	150	250 mA, 125 mA	0.75	2 mm ×192 mm ×0.6 mm	0.5	Iopromide	N	4 mL/s	N	50
Wu et al. 2021	GE	Single source fast switching kV	80	140	260 mA	1.25	N	N	Iohexol 350	1.2 mL/kg	3.1 mL/s	N	50
Qiu et al. 2021	Canon	Single source fast switching kV	80	135	112–187 mA	0.5	N	N	Ultravist 300	1.0 mL/kg	3 mL/s	40	70
Sun et al. 2020	Siemens	N	90	150	N	1	N	0.25	Iohexol	N	23 mgI/kg/s	N	N
Zeng et al. 2019	GE	Single source fast switching kV	80	140	600 mA	1.25	N	0.8	Ioversol 320	1.0 mL/kg	3.0 mL/s	25	65
Yang et al. 2019	GE	Single source fast switching kV	80	140	375 mA	1.25	N	N	Iohexol	1.5 mL/kg	4ml/s	N	N
Li et al. 2019	GE	Single source fast switching kV	80	140	260 mA	5	N	0.7	N	N	3.0 mL/s	N	45
He et al. 2019	Siemens	Dual source	80	150	130 mA, 65 mA	1.5	128 mm ×0.6 mm	1	Ioversol 370	85 mL	3.0 mL/s	N	30
Zhang et al. 2018	GE	N	N	N	275 mA	1.25	N	N	Iohexol	1.5 mL/kg	4 mL/s	N	N
Foust et al. 2018	Siemens	Dual source	80	140	302 mA, 157 mA	0.75	0.6 mm	0.28	N	50 mL	3 mL/s	N	35
Zhao et al.2017	GE	Single source fast switching kV	80	140	260 mA	5	N	0.7	N	90 mL	3.0 mL/s	N	45
Li et al. 2016	GE	Single source fast switching kV	80	140	N	1.25	N	N	Iohexol	1.2 mL/kg	2.5mL/s	N	N
Liu et al. 2015	GE	Single source fast switching kV	N	N	550 mA	1.25	0.625 mm	N	Iopamidol 300	N	4 mL/s	25	50
Liu et al. 2015	GE	Single source fast switching kV	80	140	600 mA	1.25	N	0.6	Ultravist	1.5 mL/kg	3 mL/s	N	N
Kato et al. 2015	Siemens	N	N	N	N	N	N	N	N	N	N	44	70

CT, computed tomography; DECT, dual-energy computed tomography; GE, GE Healthcare; kV, kilovoltage; N, not reported.