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Value of contrast‐enhanced sonography of small hepatocellular carcinoma with sonazoid prior to radiofrequency ablation
Author(s) -
Lee So Jung,
Won Hyung Jin,
Kim Kyung Won,
Shin Yong Moon,
Kim Pyo Nyun
Publication year - 2017
Publication title -
journal of clinical ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.272
H-Index - 61
eISSN - 1097-0096
pISSN - 0091-2751
DOI - 10.1002/jcu.22469
Subject(s) - medicine , hepatocellular carcinoma , radiofrequency ablation , hccs , radiology , cirrhosis , ultrasound , ultrasonography , percutaneous , nuclear medicine , contrast enhanced ultrasound , ablation , target lesion , percutaneous coronary intervention , myocardial infarction
Background We aimed to determine the value of contrast‐enhanced sonography (CEUS) with Sonazoid prior to percutaneous radiofrequency ablation (RFA) of small (<3 cm) hepatocellular carcinoma (HCC). Methods This prospective study was approved by our institutional review board and informed consent was obtained. The following criteria were used for study enrollment: (1) cirrhotic patients with HCCs found by contrast‐enhanced CT or Gd‐EOB‐DTPA–enhanced MRI; (2) a single HCC <3 cm in longest diameter or multinodular HCCs (<3) with each tumor <3 cm in longest diameter; and (3) indeterminate identification of the index tumor from the surrounding cirrhosis‐related pseudolesions on conventional US. Percutaneous RFA was performed under the guidance of CEUS with Sonazoid. The value of CEUS in index tumor detection and targeting was compared with that of concurrently performed conventional US. Results A total of 38 patients with 43 HCCs (mean size, 1.6 cm; range, 0.5–2.9 cm) were enrolled. The vascular phase of Sonazoid‐enhanced ultrasonography showed good tumor enhancement in 30/43 HCCs (70%). The Kupffer phase increased lesion conspicuity and operator's diagnostic confidence in 29 patients with 31 HCCs (31/43, 72%) compared with conventional US. Conclusions CEUS with Sonazoid is useful for detection and targeting of small HCC prior to RFA. © 2017 Wiley Periodicals, Inc. J Clin Ultrasound 45 :383–390, 2017