Abstract：Objective: To investigate the value of synchronous application of MR angiography(MRA) and dynamic contrast-enhancement in one station scanning of hepatic tumor with 3.0T MR for clinical diagnosis and surgical decision. Methods: Forty-one cases, including 10 normal volunteers and 31 patients with malignant and benign hepatic lesions, were scanned with multi-phase dynamic contrast-enhanced 3D MR imaging adopting 3D fast spoiled gradient recalled(3D FSPGR) and array spatial sensitivity encoding technique (ASSET) and zero-filling interpolation(ZIP). The image data was reconstructed with maximum intensity projection(MIP) on the ADW 4.2 workstation. The signal intensity of hepatic solid lesions was measured and signal intensity-time curve was derived. Results: Common hepatic artery, proper hepatic artery, right and left hepatic arteries, artery branches of grade 4 and above were clearly showed in 10 volunteers, so it was with the portal vein trunk and branches of grade 4 to 6. The diagnosis of 31 patients, including 23 cases of hepatocellular carcinoma and 8 cases of hemangioma, were made correctly with multi-phase dynamic contrast-enhanced 3D MR imaging. Destruction and deformity of hepatic arteries caused by tumor invasion, cancerous embolus of portal vein, and formation of collateral circulation were demonstrated clearly, too. Conclusion: The diagnosis of hepatic tumor and the display of hepatic vessels can be finished synchronously in multi-phase dynamic contrast-enhanced MR scanning with 3D FSPGR, which is of great value for clinical diagnosis and surgical decision.
2009, Vol. 20 
