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Fig. 1. —Graph shows abdominal aortic time—attenuation curve after mini bolus injection of 60% iodinated contrast material at a rate of 5 mL/sec for 4 sec. Injection-to-scan delay is 10 sec. Interscan delay is 2 sec. Zero on time axis corresponds to acquisition time for first contrast-enhanced CT scan obtained after mini bolus administration and is 10 sec postinjection. Injection-to-scan delay for triple-phase study is represented by time interval between beginning of injection and recording of aortic peak. In this 52-year-old man without cirrhosis, injection-to-scan delay was 17 sec.