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Abstract #3583

The role of gadoxetic acid-enhanced MR imaging in characterizing atypical hepatocellular carcinoma in dynamic CT studies

Chen-Te Chou 1,2 and Ran-Chou Chen 3

1 Radiology, Chang-Hua Christain Hospital, Chang-Hua, Taiwan, Taiwan, 2 Biomedical Imaging and Radiological Science, National Yang-Ming Medical University, Taipei, Taiwan, Taiwan, 3 Biomedical Imaging and Radiological Science, National Yang-Ming Medical University, Taiwan, Taiwan

Diagnosis of HCC can be made by tumor showing typical features of HCC (hypervascularity in the arterial phase and washout in the venous/delayed phase) on dynamic study in stead of pathology. However, some HCCs may present atypical features in dynamic studies. These atypical HCCs are diagnostically challenging in our daily practice. Our study was to evaluate the efficacy of gadoxetic acid-enhanced hepatocyte-phase imaging in characterizing HCCs with atypical enhancing pattern in CT dynamic studies. In our results, gadoxetic acid-enhanced hepatocyte-phase imaging provided higher diagnostic performance than other MR characteristics in characterization of the atypical nodules among high HCC risk patients.

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