The biphasic injection consisted of 80 cc of contrast, followed by a 50 cc mixture (1:1) of contrast and saline, followed by 50 cc of saline alone, all injected at 5 cc/sec.

• 双期注射包括80cc的对比剂，然后是50cc对比剂和saline按1：1比例配成的混合剂，随后单独注射50ccsaline，所有均已5cc/秒注射。