Imaging findings of liver resection using a bipolar radiofrequency electrosurgical device鈥擨nitial observations

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• 作者：Adele Taibbi^a ; ^{taibbiadele@hotmail.com} ; Alessandro Furlan^b ; Luigi Sandonato^c ; Valentina Bova^a ; Massimo Galia^a ; Daniele Marin^d ; Giuseppe Cabibbo^e ; Maurizio Soresi^f ; Tommaso Vincenzo Bartolotta^a ; Massimo Midiri^a ; Roberto Lagalla^a ; Giuseppe Brancatelli^a ; ^b ; ^g
• 关键词：Hepatocellular carcinoma ; Liver ; metastases ; Liver ; resection ; Radiofrequency ablation ; Coagulative necrosis
• 刊名：European Journal of Radiology
• 出版年：2012
• 期刊代码：93_0720048x
• 类别：med
• 出版时间：April, 2012
• 卷：81
• 期：4
• 页码：663-670
• 文件大小：1191 K

摘要

Objective

To assess contrast-enhanced US (CEUS), computed tomography (CT) and magnetic resonance (MR) imaging findings and serial changes of the treated area at follow-up in patients who underwent liver resection using a bipolar radiofrequency electrosurgical device.

Methods

Imaging findings of 27 patients with resected hepatocellular carcinomas (HCCs) (n = 24) and metastases (n = 3) (mean size: 2.6 cm), were retrospectively evaluated. Two readers assessed: the (a) presence, (b) thickness, (c) shape and (d) echogenicity (CEUS)/attenuation (CT)/signal intensity (MR imaging) at coagulated site and the (e) presence of residual tumor of the bipolar radiofrequency electrosurgical device resection margin.

Results

Follow-up was performed with either CT (n = 20) or MR imaging (n = 7) and repeated in 16 patients with CT (n = 7), MR imaging (n = 4), or both techniques (n = 5). Four patients also had a single CEUS examination. At first imaging follow-up a peripheral halo was depicted at resection site (100%). A fluid collection within the surgical area was found in 67%of patients. During the following imaging examinations a progressive involution of both findings was observed, respectively, in 81%and 62%of patients. Viable tissue was detected in three patients (11%).

Conclusions

After liver resection with bipolar radiofrequency electrosurgical device successfully ablated tumor is demonstrated at imaging by an unenhancing partial linear peripheral halo, in most cases, surrounding a fluid collection reducing in size during follow-up.