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Egyptian Journal of Radiology and Nuclear Medicine
Fig. 3 | Egyptian Journal of Radiology and Nuclear Medicine

Fig. 3

From: Value of computed tomography-based lipiodol retention pattern in the assessment of hepatocellular carcinoma complete response following conventional transarterial chemoembolization

Fig. 3

Case (2) (A) 67-year-old male patient with cirrhosis had shown an HCC lesion with CR according to mRECIST accompanied by complete lipiodol retention. (a–j) Baseline Pre-TACE DCE-MRI serial images showed a focal lesion in segment VI/VII, measuring 2 × 1 × 1 cm, displaying in-phase (a) and out-of-phase (b) T1WI hypointensity, T2WI (c) moderate hyperintensity, arterial enhancement with delayed washout (d–h) (yellow arrows), and restricted diffusion in DWI (i) and ADC (j) images(blue arrows). Case (2) (B) (K–m) On initial follow-up CT, the lesion displayed complete lipiodol retention (yellow arrow) on a pre-contrast image (k), whereas images of the hepatic arterial phase (l) did not exhibit any residual enhancement. Non-enhanced CT image obtained on the 9th-month post-cTACE (m) showed almost no appreciable changes in lipiodol pattern compared to the 1st follow-up CT (blue arrow). Case (2) (C) On 9th-month follow-up DCE-MRI serial images, the lesion showed in-phase (n) and out-of-phase (o) T1WI hypointensity, T2WI (p) hyperintensity, pre-contrast phase image (q) hypointensity, no contrast enhancement in all contrast phases (r–u); arterial (r), portal (s), venous (t), delayed (u) phases. On DWI (v) and ADC (w) images, free diffusion was denoted, assuring persistent complete response

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