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OBJECTIVE The purpose of this study was to evaluate the usefulness of contrast-enhanced ultrasonography (CEUS) in differentiating renal cell carcinoma (RCC) from renal angiomyolipoma (RAML). METHODS One hundred nineteen patients with 126 renal lesions (33 RAMLs and 93 RCCs) who had undergone CEUS were retrospectively studied. All of the lesions were(More)
OBJECTIVE The purpose of this study was to investigate the imaging findings of peripheral cholangiocarcinoma with low-mechanical index (MI) contrast-enhanced sonography. METHODS Eighteen nodules of peripheral cholangiocarcinoma proved by pathologic examination in 18 patients were evaluated with contrast-enhanced sonography. A low-MI real-time(More)
BACKGROUND : Radiofrequency ablation (RFA) and microwave ablation (MWA) were found to be effective in treating hepatocellular carcinoma (HCC) smaller than 3 cm; however, to the authors' knowledge, the usefulness of thermal ablation in treating larger HCC, especially those >5 cm, has not been well documented. The present study evaluated the therapeutic(More)
OBJECTIVE The purpose of this study was to assess the diagnostic performance of real-time contrast-enhanced sonography in characterization of small focal liver lesions (FLLs; < or = 3.0 cm in diameter). METHODS Two hundred small FLLs in 200 patients were examined by contrast-enhanced sonography using a contrast-specific mode of contrast pulse sequencing(More)
PURPOSE To evaluate the usefulness of contrast-enhanced sonography (CEUS) in the diagnosis of small hepatocellular carcinoma (HCC) measuring < or =2 cm in diameter. METHODS We identified 104 focal liver lesions measuring < or =2 cm in 104 consecutive patients who were enrolled for baseline sonography (BUS) and CEUS examination (49 HCCs, 55 non-HCCs). A(More)
PURPOSE This study was aimed to investigate whether the tumor necrosis induced by radiofrequency ablation (RFA) can improve the ratio of tumor-to-normal tissue (T/NT) after intratumoral injection of (131)I-chTNT. MATERIALS AND METHOD Eighteen New Zealand rabbits bearing VX2 tumor on the thigh were randomly divided into two treatment groups (control group:(More)
OBJECTIVE To compare the clinical results of surgical resection (SR) and percutaneous thermal ablation (PTA) for early-stage hepatocellular carcinoma (HCC) (single tumor nodule <or= 5 cm in diameter, or <or= 3 nodules with <or= 3 cm in diameter). METHODS One hundred and five patients with 114 HCC nodules were randomly allocated to SR (n = 54) and(More)
OBJECTIVE To prospectively compare microwave (MW) ablation using a modified internal cooled-shaft antenna with radiofrequency (RF) ablation in in vivo porcine liver and in patients with small hepatocellular carcinoma (sHCC). METHODS In an animal study, MW and RF ablations using a cooled-shaft antenna or internally cooled electrode were performed in in(More)
BACKGROUND Percutaneous microwave ablation and radiofrequency ablation are two commonly used modalities for the treatment of hepatocellular carcinoma; however, comparisons of them have not been documented adequately. METHODS Of 102 patients with biopsy-proved hepatocellular carcinoma, 49 (98 nodules) were treated percutaneously with microwave ablation and(More)
OBJECTIVE To investigate the usefulness of three-dimensional sonography in procedures of ablation for liver cancers. METHODS Two- and three-dimensional sonography were used in guiding 18 chemical ablation procedures (7 with boiling carboplatin ablation and 11 with ethanol ablation) and 21 radio frequency ablation procedures for treatment of liver cancers.(More)