Assessment of treatment efficacy in radiofrequency ablation for hepatocellular carcinoma: Comparison between multiplanar reconstruction by multi-detector row CT and contrast-enhanced ultrasonography by Truagent detection mode

Is Contrast-Enhanced US Alternative to Spiral CT in the Assessment of Treatment Outcome of Radiofrequency Ablation in Hepatocellular Carcinoma?

“…One limitation is that we have evaluated only the axial images of both CEUS and CT, but not the MPR reconstruction. As reported by Imai et al, this technique, although providing high accuracy in revealing residual tumour, is less valuable than 3-D image reconstructions by using CT-MPR in the evaluation of safety margin [22,23]. In our study, however, follow-up confirmed the results of CEUS and CT, thus not revealing false positives, and reducing the negative effects on the clinical value of our study.…”

Efficacy of Contrast-Enhanced US versus CT or MRI for the Therapeutic Control of Percutaneous Radiofrequency Ablation in the Case of Hepatic Malignancies

“…Subsequent studies demonstrated further advantages of CEUS in the context of liver tumor ablation. Not only did CEUS make it possible to make early statements about the success of treatment [17,18], it also proved to be effective and inexpensive when used for peri-interventional control, thus improving the sufficiency of tumor ablation and allowing immediate detection of vital tumor residues [19,20]. An important prospective study was performed by Ricci et al, who compared CEUS with 4-line spiral CT in the follow-up of RFA [21].…”

Usefulness of the hyperechoic rim for assessing the therapeutic efficacy of radiofrequency ablation in hepatocellular carcinoma patients

“…Imai et al. reported that the CEUS perfusion defect corresponded with the CT perfusion defect 20 . In the present study, the US hyperechoic rim was compared to the CEUS and VUS imaging findings.…”

“…Nouso et al reported that hyperechoic change was correlated with a CEUS perfusion defect. 19 In 20 In the present study, the US hyperechoic rim was compared to the CEUS and VUS imaging findings. On CEUS performed during the presence of the hyperechoic rim, the perfusion defect corresponded to the external margin of the rim.…”