Ladder-Like Low Iodine Delivery Rate Injection Protocols Based on BMI at 70 KV by Automated Tube Voltage Selection in Coronary CTA

Table 2

Comparison of injection parameters.

	Experimental group	Control group	Z value
Contrast volume (ml)	26 (4)	42	−10.20^a	0.001
Injection speed (ml/s)	2.6 (0.4)	3.5	−10.29^a	0.001
Injection time (s)	10	12	−11.83^a	0.001
Saline chaser volume (ml)	18	40	−11.83^a	0.001
Saline flow rates (ml/s)	3	4	−11.83^a	0.001

a: calculated using the Wilcoxon rank sum test.