Assessment of hepatocellular carcinoma vascularity before and after transcatheter arterial chemoembolization by using first pass perfusion weighted MR imaging

Figure 1 Signal intensity time curves of HCC in different groups before TACE. Type A represents hypervascularity, type B shows mild hypervascularity or hypovascularity of the tumor.

Figure 2 HCC before and after TACE. (A-B) FP-MRI and the signal intensity time curve derived from ROIs before TACE. (C-D) FP-MRI and the signal intensity time curve one month after TACE, the signal intensity time curve became steeper than that pre-TACE, indicating the remaining arterial blood supply of the lesion after TACE. (E) DSA before TACE and (F) DSA after TACE confirmed the FP-MRI finding. (G-H) one year after TACE, the lesion became larger and the signal intensity time curve became much steeper than that one month after TACE, suggesting the recurrence of the tumor. (I-J) T2 weighted image and enhanced T1 weighted image showing embolus in inferior vena cava and atrium dextrum.