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Background   Cone-beam computed tomography (CBCT) has been widely used during transcatheter arterial chemoembolization for hepatocellular carcinoma.Purpose   To evaluate the sensitivity of CBCT for the detection of hepatocellular carcinomas and the tumor feeders by comparing celiac artery (CA) and common hepatic artery (CHA) injection.Material and methods   We retrospectively enrolled 30 patients (52 hepatocellular carcinoma lesions) who had undergone CBCT-assisted transcatheter arterial chemoembolization. In 17 procedures (28 hepatocellular carcinomas) we acquired CBCT scans using CA injections (CBCT-CA) and in 18 (24 hepatocellular carcinomas) we used CHA injections (CBCT-CHA). Of the 30 patients, 5 underwent CBCT-CA and CBCT-CHA at different transcatheter arterial chemoembolization procedures. We performed inter-group comparisons of the detectability of hepatocellular carcinoma, the feeding artery, the intrahepatic artery branch order, and the tumor-to-liver contrast.Results   CBCT-CA detected all 28 hepatocellular carcinomas and 27 of their feeders (96.4%); CBCT-CHA identified 22 of 24 hepatocellular carcinomas (91.7%) and 21 of their feeders (95.5%). There was no significant inter-group difference in the detectability of hepatocellular carcinoma lesions (p = 0.21) or feeding arteries (p = 0.69). CBCT-CHA was superior for the assessment of the tumor-to-liver contrast and the intrahepatic artery branch order (both: p &lt; 0.01).Conclusion   CBCT-CA and CBCT-CHA were equally useful for the detection of hepatocellular carcinoma and of the feeding artery, although CBCT-CHA yields better visualization of hepatocellular carcinoma and the hepatic artery. Thus CA injection seems sufficient for lesion and vessel detection when the insertion of an angiographic catheter into the CHA is difficult.

acta radiologica open

Comparison of the effectiveness of celiac versus common hepatic artery injection for the detection of hepatocellular carcinoma and of the feeding artery on cone-beam computed tomographs obtained during hepatic angiography