Imaging findings of liver resection using a bipolar radiofrequency electrosurgical device—Initial observations
| Autor: | Massimo Midiri, Alessandro Furlan, Massimo Galia, Maurizio Soresi, Giuseppe Brancatelli, Roberto Lagalla, Giuseppe Cabibbo, Valentina Bova, Daniele Marin, Adele Taibbi, Luigi Sandonato, Tommaso Vincenzo Bartolotta |
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| Přispěvatelé: | Taibbi, A, Furlan, A, Sandonato, L, Bova, V, Galia, M, Marin, D, Cabibbo, G, Soresi, M, Bartolotta, TV, Midiri, M, Lagalla, R, Brancatelli, G. |
| Rok vydání: | 2012 |
| Předmět: |
Adult
Diagnostic Imaging Male medicine.medical_specialty Carcinoma Hepatocellular Radiofrequency ablation Electrosurgery Pilot Projects Hepatocellular carcinoma Liver metastases Liver resection Radiofrequency ablation Coagulative necrosis law.invention law medicine Hepatectomy Humans Radiology Nuclear Medicine and imaging Aged medicine.diagnostic_test business.industry Liver Neoplasms Echogenicity Magnetic resonance imaging Equipment Design General Medicine Middle Aged medicine.disease Peripheral Equipment Failure Analysis Treatment Outcome Coagulative necrosis Hepatocellular carcinoma Catheter Ablation Resection margin ELECTROSURGICAL DEVICE Female Radiology business |
| Zdroj: | European Journal of Radiology. 81:663-670 |
| ISSN: | 0720-048X |
| DOI: | 10.1016/j.ejrad.2011.01.015 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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