Comparative study between multiphase hepatic angiography of 16-slice spiral CT and DSA in primary hepatocellular carcinoma

Objective:To discuss the advantage and clinical value of multiphase hepatic angiography in primary hepatocellular carcinoma(PHC)with 16-slice spiral CT.Methods:The CT angiography(CTA)of hepatic arterial phase,portal-vein phase,and liver parenchyma phase were performed in 70 PHC patients.MIP,VRT and SSD were used to reconstruct liver vessels,and the displaying status of the hepatic tumorous vascular pathological changes(HTVPC)were analyzed and compared with DSA.Results:One hundred and fifteen branches of blood-supply tumor arteries were detected in DSA,while 110 branches in MSCTA.There was no statistically significant differences(P=0.071)between them.MIP and VRT were obviously superior to SSD.Seventy cases of liver cancer were discovered intratumoral tumor vessels(ITTVs)in DSA,and 65 cases were detected ITTVs in MSCTA.Both showed the similar imaging findings,and there was no statistically significant differences(P=0.069)between them.Thirty-six branches cancer embolus veins were detected in MSCTA,27 in DSA.There was statistically significant differences between them(P=0.004).Twenty-nine cases of hepatic portal fistulae were detected in DSA,27 cases in MSCTA(coincidence ratio 93.1%).Both showed the same imaging manifestation.Twenty-two cases of hepatic artery aberrance(31.4%)were found in MSCTA.Of them,9 cases were blood-supply tumor arteries.The diagnostic coincidence ratio with DSA was 100%.Conclusion:Multiphase hepatic angiography of 16-slice spiral CT is a non-invasive technique for accurately evaluating the HTVPC in PHC.It has very high coincidence ratio with DSA,and can provide important information and guidance effect for surgery operation and intervention therapy.