Department of Radiology, Dong-A University Hospital, Dongdaesindong 3ga, Seo-gu, Pusan 602-715, South Korea.
World J Gastroenterol. 2011 Apr 14;17(14):1874-8. doi: 10.3748/wjg.v17.i14.1874.
To evaluate the potential usefulness of acoustic radiation force impulse (ARFI) images for evaluation of hepatocellular carcinomas (HCC)-associated radiofrequency ablation.
From January 2010 to June 2010, a total of 38 patients with HCC including recurred HCCs after RFA underwent ARFI elastography. The brightness of tumor was checked and the shear wave velocity was measured for the quantification of stiffness. According to the brightness, the tumors were classified as brighter, same color and darker compared with adjacent parenchyma. Using the same methods, 8 patients with recurred HCCs after RFA state were evaluated about the brightness compared with adjacent RFA ablation area.
In the 38 patients with HCCs, 20 (52.6%) were brighter than surrounding cirrhotic parenchyma. Another 13 (34.2%) were darker. The others (5 cases, 13.2%) were seen as the same color as the adjacent liver parenchyma. Post-RFA lesions were darker than previous tumor and surrounding parenchyma in all 38 cases. However, recurred HCCs were brighter than the treated site in all 8 cases.
Using ARFI technique is helpful for differential diagnosis in order to detect recurred HCCs more easily in patients with confusing status.
评估声辐射力脉冲（ARFI）成像在评估与肝癌（HCC）相关的射频消融中的潜在作用。
2010 年 1 月至 2010 年 6 月，共对 38 例 HCC 患者（包括 RFA 后复发的 HCC）进行了 ARFI 弹性成像。检查肿瘤的亮度并测量剪切波速度以量化硬度。根据亮度，将肿瘤分为比相邻实质更亮、颜色相同和更暗。使用相同的方法，对 8 例 RFA 后复发的 HCC 患者进行评估，与相邻的 RFA 消融区域相比，其亮度如何。
在 38 例 HCC 患者中，有 20 例（52.6%）比周围肝硬化实质更亮。另有 13 例（34.2%）颜色更暗。其余 5 例（13.2%）与相邻肝实质的颜色相同。在所有 38 例中，RFA 后病变均比以前的肿瘤和周围实质暗。然而，在所有 8 例中，复发性 HCC 均比治疗部位亮。
使用 ARFI 技术有助于鉴别诊断，以便更容易发现有疑问状态的患者中的复发性 HCC。
