Abstract：Objective: To explore the accuracy of magnetic resonance true fast imaging with steady precession(True FISP) in diagnosing invasion of portal vein by hepatic carcinoma and establish the valuable system of non-invasive imaging technology to assess portal vein invaded by hepatic carcinoma and the method of choice for surgical planning. Materials and Methods: Ninety cases with clinical diagnosis of liver carcinoma and highly suspicious of having portal vein invasion were collected, all cases were proved by surgical pathology or lesion biopsy. The features of MRI were collected and analysed, the features of True FISP were correlated with the images of portal venous phase enhancement, surgical results, and/or biopsy results. Results: Both of the image quality of True FISP sequence and portal venous phase enhancement images were good,and were 100% diagnostic. True FISP sequence in the diagnosis of portal venous invasion by hepatic carcinoma has good correlation with pathologic results. Conclusion: Standard MR True FISP sequence proved to be the best image modality for displaying portal vein and liver lesions. MR True FISP can be used to diagnose portal venous invasion due to hepatic carcinoma accurately, and can be used to establish a valuable system of non-invasive imaging examination for showing portal invasion by liver cancer, thereby useful in guiding surgical planning.
2012, Vol. 23 
