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Triple-Phase MDCT of Hepatocellular Carcinoma

K. H. Y. Lee1, M. E. O'Malley1,2, M. A. Haider1 and A. Hanbidge1

1 Department of Medical Imaging, University Health Network and Mount Sinai Hospital, University of Toronto, Toronto, ON, Canada.
2 Department of Medical Imaging, NCSB, 1C558, Toronto General Hospital, 585 University Ave., Toronto M5G 2N2, ON, Canada.



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  		Fig. 1A. —58-year-old woman with chronic hepatitis B. Hepatic arterial (A) and portal venous (B) phase MDCT scans show large hepatocellular carcinoma in right lobe of liver. Tumor is heterogeneous during both phases. Note hypervascular components (arrow) on A that show washout on B.

 


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  		Fig. 1B. —58-year-old woman with chronic hepatitis B. Hepatic arterial (A) and portal venous (B) phase MDCT scans show large hepatocellular carcinoma in right lobe of liver. Tumor is heterogeneous during both phases. Note hypervascular components (arrow) on A that show washout on B.

 


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  		Fig. 2. —Graph shows mean attenuation of lesions (long-dashed lines), liver (short-dashed lines), and aorta (solid line) during hepatic arterial and portal venous phases. Note that mean attenuation of liver increases while mean attenuation of lesions decreases on portal venous phase compared with hepatic arterial phase.

 


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  		Fig. 3A. —46-year-old man with chronic hepatitis B. Hepatic arterial phase MDCT scan shows large heterogeneous hepatocellular carcinoma (arrowheads) with hypervascular components and abnormal internal vessels (arrow).

 


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  		Fig. 3B. —46-year-old man with chronic hepatitis B. Portal venous phase MDCT scan shows heterogeneous tumor (arrowheads) that is predominantly hypoattenuating relative to liver parenchyma.

 


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  		Fig. 4A. —79-year-old man with underlying alcoholic cirrhosis. Hepatic arterial phase MDCT scan shows hypoattenuating tumor in segments II and III.

 


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  		Fig. 4B. —79-year-old man with underlying alcoholic cirrhosis. Portal phase MDCT scan shows tumor to be predominantly hypoattenuating with peripheral crescent of tissue that is isoattenuating to liver parenchyma.

 


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  		Fig. 5A. —70-year-old man with chronic hepatitis B. Hepatic arterial (A) and portal venous (B) phase MDCT scans show hepatocellular carcinoma with hypervascular nodule (arrow) in A that remains hyperattenuating relative to liver in B.

 


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  		Fig. 5B. —70-year-old man with chronic hepatitis B. Hepatic arterial (A) and portal venous (B) phase MDCT scans show hepatocellular carcinoma with hypervascular nodule (arrow) in A that remains hyperattenuating relative to liver in B.

 

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