Prediction of the ablated area prior to radiofrequency ablation for liver tumor under CT guidance
Prediction of the ablated area prior to radiofrequency ablation for liver tumor under CT guidance
复制标题
CT引导下肝脏肿瘤射频消融术前消融面积的预测
DOI：
10.1080/13645706.2017.1407799
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Yamagami T.
中科院分区：
文献类型：
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作者：
Yoshimatsu R;Doi A;Yamanishi T; Nishimori M;Ogi K; Kajiwara K. Tamura T;Minamiguchi H;Yamagami T.
目的：评估我们开发的一种方法在CT工作站对肝脏肿瘤进行CT引导射频（RF）消融时预测消融面积的有效性。材料与方法：采用CT引导射频消融术治疗7例肝细胞癌，共10个肿瘤（平均直径15.5 mm，范围9.0 ~ 21.5 mm）。电极推进后，得到CT平片。然后在工作站上创建一个模拟球来预测烧蚀面积。在确认肿瘤充分位于球内后，行消融术。在消融后的CT图像上三个横截面方向上的六个点测量实际消融区域边缘与预测消融区域边缘的距离。结果：手术顺利，无并发症。无局部复发。实际消融区与预测消融区间隙的平均绝对值为3.06±2.18 mm（范围：0 ~ 9 mm）。在29个（55.8%）点，实际消融面积小于预测消融面积；大的是17个百分点（32.7%），大的是6个百分点（11.5%）。结论：我们的方法在CT引导下产生了可接受的射频消融模拟。
Purpose:To evaluate the usefulness of a method we developed to predict the ablation area at the time of CT guided radiofrequency (RF) ablation for liver tumors on a CT workstation.Material and methods:Ten tumors (mean diameter 15.5 mm, range, 9.0–21.5 mm) in seven patients with hepatocellular carcinoma for which CT guided RF ablation was performed were subjects of this study. After advancing the electrode, plain CT was obtained. Then a simulated ball to predict the ablated area was created on the workstation. After confirming that the tumor was sufficiently within the ball, ablation was performed. The distance of the edge of the actual ablated area from that of the predicted ablated area was measured at six points in three cross-sectional directions on CT images after ablation.Results:The procedures were successfully performed without complications. No local recurrence occurred. Mean absolute value of the distance of the gap between the actual and predicted ablated areas was 3.06 ± 2.18 mm (range: 0 to 9 mm). At 29 (55.8%) points, the actual ablated area was smaller than the predicted ablated area; it was larger in 17 (32.7%), and was the same in 6 (11.5%) points.Conclusion:Our method produces an acceptable simulation during RF ablation under CT guidance.