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Figure 2 | Journal of Medical Case Reports

Figure 2

From: Split-bolus versus triphasic multidetector-row computed tomography technique in the diagnosis of hepatic focal nodular hyperplasia: a case report

Figure 2

Schematic view of split-bolus 64-detector row computed tomography scanning of the chest and abdomen of a 53-year-old Caucasian woman (weight 75kg) with a colorectal adenocarcinoma and incidental liver focal nodular hyperplasia. First bolus at the start of bolus injection, or time zero: 90mL (1.2mL/kg) of contrast medium at 2.0mL/second, followed by 20mL of saline solution at the same flow rate, is injected to obtain adequate hepatic enhancement during the portal venous phase. Second bolus: 60mL of contrast medium at 3.5mL/second followed by 20mL of saline solution at the same flow rate to obtain hepatic arterial phase. A single contrast-enhanced acquisition from the pulmonary apex to the pubic symphysis was acquired. A circular region of interest of the bolus-tracking technique was placed in the descending aorta. At the start of the second bolus contrast medium injection, the scan started cranio-caudally after a delay of 6 seconds from the arrival of the contrast medium into the aorta. Abbreviations: sec, second(s); Tarr, arrival time of the contrast medium into the aorta.

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