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European Radiology Experimental
Fig. 5 | European Radiology Experimental

Fig. 5

From: A novel method for predicting hepatocellular carcinoma response to chemoembolization using an intraprocedural CT hepatic arteriography-based enhancement mapping: a proof-of-concept analysis

Fig. 5

An example illustrating how to identify feeding arteries on CTHA-EM with residual tumor enhancement. a Before DEB-TACE, a small feeding artery (orange arrow) could be barely depicted on pre-treatment imaging. b After DEB-TACE, this feeding artery became prominent (orange arrow) with residual tumor enhancement (red arrow) on posttreatment CTHA-EM image. A region of contrast stasis could be seen as a subtracted void area (white arrow). c Posttreatment native CT depicts contrast deposition from the delivery of DEB-TACE (white arrow) at the region suspicious for residual tumor enhancement. d Posttreatment CTHA identified a feeding artery (orange arrow) to the area of contrast deposition in c. However, it is not possible to distinguish residual enhancement from stasis without subtraction image. CT, Computed tomography; CTHA, CT hepatic arteriography; CTHA-EM, CTHA enhancement mapping; DEB-TACE, Drug-eluting beads transarterial chemoembolization

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