医学
烧蚀
射频消融术
烧蚀区
磁共振成像
经皮
射频消融
放射科
恶性肿瘤
导管消融
核医学
凝固性坏死
病理
内科学
作者
Bernd Frericks,Jörg P. Ritz,A. Roggan,Karl‐Jürgen Wolf,Thomas Albrecht
出处
期刊:Radiology
[Radiological Society of North America]
日期:2005-12-01
卷期号:237 (3): 1056-1062
被引量:112
标识
DOI:10.1148/radiol.2373041104
摘要
Institutional review board approval and patient informed consent were obtained. Use of a multipolar radiofrequency (RF) ablation device in patients with hepatic malignancy was prospectively evaluated with regard to feasibility, achieved ablation zone size and shape, technical effectiveness, and complications. Nineteen malignant liver tumors were treated with the multipolar resistance-controlled RF ablation system, with which up to three internally cooled bipolar coagulation electrodes can be operated simultaneously. Postinterventional imaging was performed with dynamic contrast material-enhanced magnetic resonance (MR) imaging and MR imaging-based three-dimensional planimetry. Complete tumor destruction was achieved in 18 of 19 tumors. Mean ablation zone volume was 52 mL +/- 45 (standard deviation). Thirteen patients were treated with a percutaneous approach; six, with an intraoperative approach. Maximum ablation size was 91 x 62 x 79 mm with the percutaneous and 73 x 98 x 74 mm with the intraoperative approach. Of the 18 completely evaluable ablation zones, 13 were concentric, two were moderately eccentric, two were eccentric, and one was wedge-shaped. The multipolar RF ablation device achieves large ablation zones and has high technical effectiveness in treating hepatic tumors.
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