Role of multiphase scans by multirow-detector helical CT in detecting small hepatocellular carcinoma

Figure 1 SHCC with size of 1. 5 cm in diameter. A: Precontrast image shows hypoattenuating lesion. B:The early arterial phase image shows nonenhanced lesion. C: In the late arterial phase,the lesions enhanced. D: In the portal venous phase, the lesions enhanced dropped down.

Figure 2 SHCC of 2. 0 cm in diameter, A: Precontrast image shows hypoattenuating lesion. B: CT scan obtained at the same level as in the early arterial phase, Tumor intensely enhanced. C: In the late arterial phase, the lesions showed enhancement yet. D: In the portal venous phase, the lesions enhancement dropped down.

Figure 3 SHCC of 1. 5 cm in diameter, A: Hypoattenuating lesion showed in plance image. B: CT scan obtained at the same level as in the early arterial phase, Tumor intensely enhanced. C: In the late arterial phase tumor becomes isodense (arrow). D: In the portal venous phase, the tumor turned to hypodense.