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Comparison of contrast-enhanced ultrasound and contrast-enhanced computed tomography in evaluating the treatment response to transcatheter arterial chemoembolization of hepatocellular carcinoma using modified RECIST

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Abstract

Purpose

We aimed to compare contrast-enhanced ultrasound (CEUS) with contrast-enhanced computed tomography (CECT) for evaluating the treatment response to transcatheter arterial chemoembolization (TACE) of hepatocellular carcinoma (HCC).

Materials and methods

Treatment responses of 130 patients who underwent TACE were evaluated by CEUS and CECT. We initially compared the abilities of CEUS and CECT to detect residual tumour, which were confirmed by histology or angiography. Then, we compared the tumour response to TACE assessed by CEUS and CECT, according to Modified Response Evaluation Criteria in Solid Tumours (mRECIST).

Results

The sensitivity and accuracy of detecting residual tumour by CEUS vs. CECT were 95.9 % vs. 76.2 % (p < 0.001) and 96.2 % vs. 77.7 % (p < 0.001), respectively. For target lesions, 13 patients were observed as complete response (CR) by CEUS, compared to 36 by CECT (p < 0.001). For nontarget lesions, 12 patients were observed as CR by CEUS, compared to 22 by CECT (p = 0.006). For overall response, eight patients were observed as CR by CEUS, compared to 31 by CECT (p < 0.001).

Conclusion

The diagnostic performance of CEUS was superior to CECT for detecting residual tumour after TACE. In clinical, CEUS should be recommended as an optional procedure for assessing the tumour response to TACE.

Key Points

The mRECIST are widely applied for evaluating the response of HCC.

Imaging method has been applied to assess the therapeutic response to TACE.

The diagnostic performance of CEUS was superior to CECT for residual tumours.

CEUS can be a valuable method for assessing tumour response to TACE.

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Abbreviations

CEUS:

Contrast-enhanced ultrasound

CECT:

Contrast-enhanced computed tomography

TACE:

Transcatheter arterial chemoembolization

HCC:

Hepatocellular carcinoma

mRECIST:

Modified Response Evaluation Criteria in Solid Tumours

CR:

Complete response

PR:

Partial response

SD:

Stable disease

PD:

Progressive disease

IR:

Incomplete response

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Acknowledgments

The scientific guarantor of this publication is Xiao-yan Xie. The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article. The authors state that this work has not received any funding. No complex statistical methods were necessary for this paper. Institutional Review Board approval was obtained. Written informed consent was obtained from all subjects (patients) in this study. Methodology: retrospective, diagnostic or prognostic study, performed at one institution.

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Correspondence to Xiao-yan Xie.

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Liu, M., Lin, Mx., Lu, Md. et al. Comparison of contrast-enhanced ultrasound and contrast-enhanced computed tomography in evaluating the treatment response to transcatheter arterial chemoembolization of hepatocellular carcinoma using modified RECIST. Eur Radiol 25, 2502–2511 (2015). https://doi.org/10.1007/s00330-015-3611-9

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  • DOI: https://doi.org/10.1007/s00330-015-3611-9

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