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Verdonschot KHM, Arts S, Van den Boezem PB, de Wilt JHW, Fütterer JJ, Stommel MWJ, Overduin CG. Ablative margins in percutaneous thermal ablation of hepatic tumors: a systematic review. Expert Rev Anticancer Ther 2023; 23:977-993. [PMID: 37702571 DOI: 10.1080/14737140.2023.2247564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 08/09/2023] [Indexed: 09/14/2023]
Abstract
INTRODUCTION This study aims to systematically review current evidence on ablative margins and correlation to local tumor progression (LTP) after thermal ablation of hepatocellular carcinoma (HCC) and colorectal liver metastases (CRLM). METHODS A systematic search was performed in PubMed (MEDLINE) and Web of Science to identify all studies that reported on ablative margins (AM) and related LTP rates. Studies were assessed for risk of bias and synthesized separately per tumor type. Where possible, results were pooled to calculate risk differences (RD) as function of AM. RESULTS In total, 2910 articles were identified of which 43 articles were eligible for final analysis. There was high variability in AM measurement methodology across studies in terms of measurement technique, imaging modalities, and timing. Most common margin stratification was < 5 mm and > 5 mm, for which data were available in 25/43 studies (58%). Of these, all studies favored AM > 5 mm to reduce the risk of LTP, with absolute RD of 16% points for HCC and 47% points for CRLM as compared to AM < 5 mm. CONCLUSIONS Current evidence supports AM > 5 mm to reduce the risk of LTP after thermal ablation of HCC and CRLM. However, standardization of AM measurement and reporting is critical to allow future meta-analyses and improved identification of optimal threshold value for clinical use.
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Affiliation(s)
- K H M Verdonschot
- Department of Medical Imaging, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - S Arts
- Department of Medical Imaging, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - P B Van den Boezem
- Department of Surgery, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - J H W de Wilt
- Department of Surgery, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - J J Fütterer
- Department of Medical Imaging, Radboud University Medical Centre, Nijmegen, The Netherlands
- The Robotics and Mechatronics research group, Faculty of Electrical Engineering, Mathematics and Computer Science, University of Twente, Enschede, The Netherlands
| | - M W J Stommel
- Department of Surgery, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - C G Overduin
- Department of Medical Imaging, Radboud University Medical Centre, Nijmegen, The Netherlands
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Predictive Value of Ablative Margin Assessment After Microwave Ablation for Local Tumor Progression in Medium and Large Hepatocellular Carcinoma: Computed Tomography-Computed Tomography Image Fusion Method Versus Side-by-Side Method. J Comput Assist Tomogr 2023; 47:31-37. [PMID: 36668979 DOI: 10.1097/rct.0000000000001395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
OBJECTIVE This study aimed to explore the feasibility and predictive value for local tumor progression (LTP) of the computed tomography (CT)-CT image fusion method versus side-by-side method to assess ablative margin (AM) in hepatocellular carcinoma ≥3 cm in diameter. MATERIALS AND METHODS We selected patients with hepatocellular carcinoma ≥3 cm in diameter who underwent microwave ablation and had complete tumor ablation. We used the CT-CT image fusion method and side-by-side method to assess AM separately and divided the lesions into 3 groups: group I, minimum ablative margin (min-AM) <0 mm (the ablation zone did not fully cover the tumor); group II, 0 mm ≤ min-AM <5 mm; and group III, min-AM ≥5 mm. RESULTS A total of 71 patients involving 71 lesions were included. The κ coefficient for the agreement between the CT-CT image fusion method and the side-by-side method in assessing min-AM was 0.14 (P = 0.028). Cumulative LTP rate was significantly different between groups by min-AM from the CT-CT image fusion method (P < 0.05) but not by min-AM from the side-by-side method (P = 0.807). Seventeen of the 20 LTP lesions were located at min-AM on fused CT images, with consistency rate of 85%. CONCLUSIONS Compared with the side-by-side method, the CT-CT image fusion method is more accurate in assessing the AM of eccentrically ablated lesions and shows better predictive value for LTP. The min-AM based on CT-CT image fusion assessment is an important influencing factor for LTP.
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Ding WZ, Liu S, Liu F, Cheng Z, Yu X, Han ZY, Yu J, Liang P. Are all local tumour progressions of HCC related to thermal ablation? A study of the causes and classification of local tumour progression. Eur Radiol 2022; 32:8518-8526. [PMID: 35704110 DOI: 10.1007/s00330-022-08913-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 05/26/2022] [Accepted: 05/30/2022] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Local tumour progression (LTP) is believed to be a negative consequence of imperfect thermal ablation, but we wondered if all LTP is truly due to imperfect ablation. METHODS This study included 185 LTPs occurring within 1 cm of the ablation zone (AZ) after clinical curative thermal ablation for ≤ 5 cm hepatocellular carcinoma between 2010 and 2019. The AZ was divided into 8 quadrants by coronal, sagittal, and horizontal planes. Two methods, visual assessment through pre- and post-MRI (VA) and tumour mapping for 3D visualisation pre- and post-MRI fusion (MF), were used to assess which AZ quadrant included the shortest ablation margin (AM) by three doctors. LTP subclassification was based on whether LTP contacted the AZ margin (contacted LTP and dissociated-type LTP) and occurrence at different time points (12, 18, and 24 months). RESULTS Fleiss's Kappa of VA and MF was 0.769 and 0.886, respectively. Cohen's Kappa coefficient between VA and MF was 0.830. For all LTPs, 98/185 (53.0%) occurred in the shortest AM quadrant, which showed a significant central tendency (p < 0.001). However, only 8/51 (15.7%) dissociated - type LTPs and 6/39 (15.4%) LTPs after 24 months occurred in the shortest AM quadrant, which showed no evenly distributed difference (p = 0.360 and 0.303). CONCLUSIONS MF is an accurate and convenient method to assess the shortest AM quadrant. LTP is a central tendency in the shortest AM quadrant, but dissociated-type and LTPs after 24 months are not, and these LTP types could be considered nonablation-related LTPs. KEY POINTS • LTPs are not evenly distributed around the AZ. More than half of LTPs occur in the shortest AM quadrant. • Subgroup analysis showed that the occurrence of contacted-type LTPs (tumour margin has direct contact with the AZ) within 24 months after ablation indeed had a high proportion in the shortest AM quadrant, and they could be called ablation-related LTPs. • However, the dissociated-type LTPs (tumour margin adjacent to but not in contact with the AZ) or LTPs occurring beyond 24 months after ablation were evenly distributed around the AZ, and they could be called nonablation-related LTPs.
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Affiliation(s)
- Wen-Zhen Ding
- Department of Interventional Ultrasound, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, China
| | - Sisi Liu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, China
| | - Fangyi Liu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, China
| | - Zhigang Cheng
- Department of Interventional Ultrasound, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, China
| | - Xiaoling Yu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, China
| | - Zhi-Yu Han
- Department of Interventional Ultrasound, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, China
| | - Jie Yu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, China
| | - Ping Liang
- Department of Interventional Ultrasound, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, China.
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Hou Q, Zhang K, Chen S, Chen J, Zhang Y, Gong N, Guo W, Fang C, Wang L, Jiang J, Dou J, Liang X, Yu J, Liang P. Physical & Chemical Microwave Ablation (MWA) Enabled by Nonionic MWA Nanosensitizers Repress Incomplete MWA-Arised Liver Tumor Recurrence. ACS NANO 2022; 16:5704-5718. [PMID: 35352557 DOI: 10.1021/acsnano.1c10714] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Ionic liquid (IL)-loaded or metal ions-enriched nanoparticles have been witnessed to assist microwave ablation (MWA) and heighten heat utilization for tumor treatment, which, however, inevitably brings about cell dys-homeostasis and severely endangers normal cells or tissues. In this report, a nonionic MWA sensitizer that encapsulates ethyl formate (EF) and doxorubicin (DOX) in liposomes (EF-DOX-Lips) was constructed to reinforce MWA and combined therapy against incomplete MWA-induced tumor recurrence. EF in EF-DOX-Lips as the nonionic liquid can perform like IL to accelerate energy transformation from electromagnetic energy to heat for strengthening MWA. More significantly, EF metabolite, that is, ethanol, also enables chemical ablation, which further enhances MWA. As well, the EF gasification-enhanced lipid rupture and cavitation can promote DOX delivery into a liver tumor for magnifying MWA & chemotherapy combined therapy. By virtue of these contributions, this nonionic MWA nanosensitizer exerts robust antitumor effects to inhibit tumor proliferation and angiogenesis for repressing tumor growth and recurrence or metastasis via downregulating the Epha2 gene and unconventional PI3K/Akt & MAPK signal pathways that the incomplete MWA activated, which provides an avenue to elevate an MWA-based antitumor outcome.
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Affiliation(s)
- Qidi Hou
- Department of Medical Ultrasound, Fifth Medical Center, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing 100853, P. R. China
- Department of clinical laboratory, Institute of Laboratory Medicine, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, School of Medical Technology, Guangdong Medical University, No. 1 New City Road, Dongguan 523808, P. R. China
| | - Kun Zhang
- Central Laboratory and Department of Medical Ultrasound, Shanghai Tenth People's Hospital, Tongji University School of Medicine. No. 301 Yan-chang-zhong Road, Shanghai 200072, P. R. China
| | - Sitong Chen
- Department of Medical Ultrasound, Fifth Medical Center, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing 100853, P. R. China
| | - Jie Chen
- Central Laboratory and Department of Medical Ultrasound, Shanghai Tenth People's Hospital, Tongji University School of Medicine. No. 301 Yan-chang-zhong Road, Shanghai 200072, P. R. China
| | - Yan Zhang
- Central Laboratory and Department of Medical Ultrasound, Shanghai Tenth People's Hospital, Tongji University School of Medicine. No. 301 Yan-chang-zhong Road, Shanghai 200072, P. R. China
| | - Ningqiang Gong
- Laboratory of Controllable Nanopharmaceuticals, Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, No. 11 ZhongGuanCun BeiYiTiao, Beijing 100190, P. R. China
| | - Weisheng Guo
- Laboratory of Controllable Nanopharmaceuticals, Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, No. 11 ZhongGuanCun BeiYiTiao, Beijing 100190, P. R. China
| | - Chao Fang
- Central Laboratory and Department of Medical Ultrasound, Shanghai Tenth People's Hospital, Tongji University School of Medicine. No. 301 Yan-chang-zhong Road, Shanghai 200072, P. R. China
| | - Luo Wang
- Department of Medical Ultrasound, Fifth Medical Center, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing 100853, P. R. China
| | - Jian Jiang
- Department of Medical Ultrasound, Fifth Medical Center, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing 100853, P. R. China
| | - Jianping Dou
- Department of Medical Ultrasound, Fifth Medical Center, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing 100853, P. R. China
| | - Xingjie Liang
- Laboratory of Controllable Nanopharmaceuticals, Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, No. 11 ZhongGuanCun BeiYiTiao, Beijing 100190, P. R. China
| | - Jie Yu
- Department of Medical Ultrasound, Fifth Medical Center, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing 100853, P. R. China
| | - Ping Liang
- Department of Medical Ultrasound, Fifth Medical Center, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing 100853, P. R. China
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Minier C, Hermida M, Allimant C, Escal L, Pierredon-Foulongne MA, Belgour A, Piron L, Taourel P, Cassinotto C, Guiu B. Software-based assessment of tumor margins after percutaneous thermal ablation of liver tumors: A systematic review. Diagn Interv Imaging 2022; 103:240-250. [PMID: 35246412 DOI: 10.1016/j.diii.2022.02.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/01/2022] [Accepted: 02/08/2022] [Indexed: 12/21/2022]
Abstract
PURPOSE The purpose of this study was to make a systematic review of clinical studies evaluating software-based tumor margin assessment after percutaneous thermoablation (PTA) of liver tumors. MATERIALS AND METHODS A systematic literature search was performed through Pubmed/MEDLINE, Embase and the Cochrane Library. Original studies published in English that reported on software-based assessment of ablation margins (AM) following PTA of liver tumors were selected. Studies were analyzed with respect to design, number of patients and tumors, tumor type, PTA technique, tumor size, target registration error, study outcome(s) (subtypes: feasibility, comparative, clinical impact, predictive or survival), and follow-up period. RESULTS Twenty-nine articles (one multi-center and two prospective studies) were included. The majority were feasibility (26/29, 89.7%) or predictive (23/29, 79.3%) studies. AM was a risk factor of local tumor progression (LTP) in 25 studies (25/29, 86.2%). In nine studies (9/29, 31%) visual assessment overestimated AM compared with software-aided assessment. LTP occurred at the location of the thinnest margin in nine studies (9/29, 31%). Time for registration and analysis was heterogeneously reported, ranging between 5-30 min. Mean target registration error was reported in seven studies (7/29, 24.1%) at 1.62 mm (range: 1.20-2.23 mm). Inter-operator reproducibility was high (kappa range: 0.686-1). Ascites, liver deformation and inconspicuous tumor were major factors of co-registration error. CONCLUSION Available studies present a low level of evidence overall, since most of them are feasibility, retrospective and single-center studies.
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Affiliation(s)
- Chloé Minier
- Department of Radiology, St-Eloi University Hospital, 34090, Montpellier, France
| | - Margaux Hermida
- Department of Radiology, St-Eloi University Hospital, 34090, Montpellier, France
| | - Carole Allimant
- Department of Radiology, St-Eloi University Hospital, 34090, Montpellier, France
| | - Laure Escal
- Department of Radiology, St-Eloi University Hospital, 34090, Montpellier, France
| | | | - Ali Belgour
- Department of Radiology, St-Eloi University Hospital, 34090, Montpellier, France
| | - Lauranne Piron
- Department of Radiology, St-Eloi University Hospital, 34090, Montpellier, France
| | - Patrice Taourel
- Department of Radiology, Lapeyronie University Hospital, 34090, Montpellier, France
| | | | - Boris Guiu
- Department of Radiology, St-Eloi University Hospital, 34090, Montpellier, France.
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Ding J, Wang D, Zhou Y, Zhao L, Zhou H, Jing X, Wang Y. A novel mono-modality fusion imaging method based on three-dimensional contrast-enhanced ultrasound for the evaluation of ablation margins after microwave ablation of hepatocellular carcinoma. J Gastrointest Oncol 2021; 12:184-195. [PMID: 33708435 DOI: 10.21037/jgo-21-46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Background To investigate the feasibility and accuracy of using preoperative and postoperative three-dimensional contrast-enhanced ultrasound (3D CEUS) fusion imaging in the evaluation of safety margins after thermal ablation of hepatocellular carcinoma (HCC). Methods A total of the 24 patients with HCC who underwent microwave ablation (MWA) between June 2020 and December 2020 were enrolled in this study. All patients received preoperative and postoperative 3D CEUS. The preoperative and postoperative 3D CEUS images were then fused. The success rate and evaluation time were recorded. The ablation margin and whether or not the safety margin was reached were calculated and recorded. If the ablation safety margin was not reached, the residual ablation volume needed to cover the safety margin was calculated automatically. The agreement between contrast-enhanced computed tomography(CECT) and 3D CEUS fusion imaging in the evaluation of ablation margins was explored using the kappa coefficient. Results The 3D CEUS fusion success rate was 95.8% (23/24), with a mean fusion time of (4.1±1.8) minutes. Twenty-three tumors were completely ablated, and the safety margin was achieved for 9 tumors. The ablation margin of 14 tumors was <5 mm. The mean uncovered safety margin volume was (2.27±2.11) mL, and the mean proportion of the uncovered safety margin to the whole safety margin was 16.8%. According to the results of preoperative and postoperative CECT fusion imaging, the ablation margin of 13 tumors was <5 mm, and the ablation margin of 10 tumors was >5 mm. The 2 methods showed excellent consistency, with a Kappa value of 0.911 (P=0.000012). Conclusions This study has presented a novel mono-modality fusion imaging method based on CEUS. We demonstrated that 3D CEUS fusion has a short fusion time and a high success rate, as well as good consistency with enhanced CT fusion. Therefore, 3D CEUS fusion is a feasible and accurate tool for evaluating the immediate efficacy of thermal ablation of HCC.
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Affiliation(s)
- Jianmin Ding
- Department of Ultrasound, Tianjin Third Central Hospital, Tianjin, China.,The Third Central Clinical College of Tianjin Medical University, Tianjin, China.,Tianjin Institute of Hepatobiliary Disease, Tianjin Key Laboratory of Extracorporeal Life Support for Critical Diseases, Artificial Cell Engineering Technology Research Center, Tianjin Third Central Hospital, Tianjin, China
| | - Dong Wang
- Department of Ultrasound, Tianjin Third Central Hospital, Tianjin, China.,Tianjin Institute of Hepatobiliary Disease, Tianjin Key Laboratory of Extracorporeal Life Support for Critical Diseases, Artificial Cell Engineering Technology Research Center, Tianjin Third Central Hospital, Tianjin, China
| | - Yan Zhou
- Department of Ultrasound, Tianjin Third Central Hospital, Tianjin, China.,Tianjin Institute of Hepatobiliary Disease, Tianjin Key Laboratory of Extracorporeal Life Support for Critical Diseases, Artificial Cell Engineering Technology Research Center, Tianjin Third Central Hospital, Tianjin, China
| | - Lin Zhao
- Department of Ultrasound, Tianjin Third Central Hospital, Tianjin, China.,Tianjin Institute of Hepatobiliary Disease, Tianjin Key Laboratory of Extracorporeal Life Support for Critical Diseases, Artificial Cell Engineering Technology Research Center, Tianjin Third Central Hospital, Tianjin, China
| | - Hongyu Zhou
- Department of Ultrasound, Tianjin Third Central Hospital, Tianjin, China.,Tianjin Institute of Hepatobiliary Disease, Tianjin Key Laboratory of Extracorporeal Life Support for Critical Diseases, Artificial Cell Engineering Technology Research Center, Tianjin Third Central Hospital, Tianjin, China
| | - Xiang Jing
- Department of Ultrasound, Tianjin Third Central Hospital, Tianjin, China.,Tianjin Institute of Hepatobiliary Disease, Tianjin Key Laboratory of Extracorporeal Life Support for Critical Diseases, Artificial Cell Engineering Technology Research Center, Tianjin Third Central Hospital, Tianjin, China
| | - Yandong Wang
- Department of Ultrasound, Tianjin Third Central Hospital, Tianjin, China.,Tianjin Institute of Hepatobiliary Disease, Tianjin Key Laboratory of Extracorporeal Life Support for Critical Diseases, Artificial Cell Engineering Technology Research Center, Tianjin Third Central Hospital, Tianjin, China
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An C, Cheng Z, Yu X, Han Z, Liu F, Li X, Wu SS, Yu J, Liang P. Ultrasound-guided percutaneous microwave ablation of hepatocellular carcinoma in challenging locations: oncologic outcomes and advanced assistive technology. Int J Hyperthermia 2020; 37:89-100. [PMID: 31969036 DOI: 10.1080/02656736.2019.1711203] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Purpose: To assess the oncologic outcomes of the hepatocellular carcinoma (HCC) patients in challenging locations (CLs) underwent ultrasound-guided percutaneous microwave ablation (US-PMWA) and the efficacy and safety of the advanced assistive technology (AAT).Materials and methods: Data for 489 treatment-naïve patients with HCC who met Milan criteria and subsequently underwent US-PMWA were reviewed from March 2012 to November 2016. According to the distance (<5 mm) between the tumor and surrounding structures, the patients were divided into two groups: a CL group and a non-CL group. Regarding MWA assisted by AAT, the CL group was further subdivided into two groups: an AAT group and a non-AAT group. Technique effectiveness, complications and survival outcomes (i.e., overall survival [OS] and recurrence-free survival [RFS]) were compared between CL and non-CL groups. Local tumor progression (LTP) was compared between AAT and non-AAT groups.Results: Technique effectiveness and complications in the CL group were similar to those in the non-CL group (p = .873 and p = .828, respectively). The OS and RFS in six types of CL groups were comparable with those in non-CL group (p = .131-.117) including adjacent vital structures, gallbladder, hepatic hilar regions, major vessels, diaphragm and capsule, respectively. The LTP rates in the AAT group were significantly higher than those in the non-AAT group (p = .001).Conclusions: US-PMWA assisted by AAT to treat HCC lesions in CLs was safe and effective; also, this technique had comparable success and survival outcomes with those of patients in non-CL.
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Affiliation(s)
- Chao An
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, PR China
| | - Zhigang Cheng
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, PR China
| | - Xiaoling Yu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, PR China
| | - Zhiyu Han
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, PR China
| | - Fangyi Liu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, PR China
| | - Xin Li
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, PR China
| | - Song Song Wu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, PR China
| | - Jie Yu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, PR China
| | - Ping Liang
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, PR China
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Imajo K, Ogawa Y, Yoneda M, Saito S, Nakajima A. A review of conventional and newer generation microwave ablation systems for hepatocellular carcinoma. J Med Ultrason (2001) 2020; 47:265-277. [PMID: 31960190 DOI: 10.1007/s10396-019-00997-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 11/21/2019] [Indexed: 12/15/2022]
Abstract
Although microwave ablation (MWA) exhibits a high thermal efficiency, the major limitation of conventional MWA systems is the lack of predictability of the ablation zone size and shape. Therefore, a specific newer generation MWA system, The Emprint™ Ablation System with Thermosphere™ Technology, was designed to create predictable large spherical zones of ablation that are not impacted by varying tissue environments. The time required for ablation with MWA systems is short, and the shape of the necrosis is elliptical with the older systems and spherical with the new system. In addition, because MWA has no heat-sink effect, it can be used to ablate tumors adjacent to major vessels. Although these factors yield a large ablation volume and result in good local control, excessive ablation of liver tissue and unexpected ablation of surrounding organs are possible. Therefore, MWA should be carefully performed. This review highlights the efficacy and complications of MWA performed with conventional systems and the newer generation system in patients with hepatocellular carcinoma (HCC). MWA with the newer generation system seems to be a promising treatment option for large HCCs and secondary hepatic malignancies, with several advantages over other available ablation techniques, including conventional MWA. However, further randomized controlled trials are necessary to fully clarify the benefits and pitfalls of this new system.
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Affiliation(s)
- Kento Imajo
- Department of Gastroenterology and Hepatology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Yuji Ogawa
- Department of Gastroenterology and Hepatology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Masato Yoneda
- Department of Gastroenterology and Hepatology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Satoru Saito
- Department of Gastroenterology and Hepatology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Atsushi Nakajima
- Department of Gastroenterology and Hepatology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan.
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An C, Li X, Zhang M, Yang J, Cheng Z, Yu X, Han Z, Liu F, Dong L, Yu J, Liang P. 3D visualization ablation planning system assisted microwave ablation for hepatocellular carcinoma (Diameter >3): a precise clinical application. BMC Cancer 2020; 20:44. [PMID: 31959147 PMCID: PMC6972027 DOI: 10.1186/s12885-020-6519-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 01/06/2020] [Indexed: 02/06/2023] Open
Abstract
Background The aim of this retrospective study was to compare the feasibility and efficiency of ultrasound-guided percutaneous microwave ablation (US-PMWA) assisted by three-dimensional visualization ablation planning system (3DVAPS) and conventional 2D planning for hepatocellular carcinoma (HCC) (diameter > 3 cm). Methods One hundred thirty patients with 223 HCC nodules (5.0 ± 1.5 cm in diameter, [3.0–10.0 cm]) who met the eligibility criteria divided into 3D and 2D planning group were reviewed from April 2015 to August 2018. Ablation parameters and oncological outcomes were compared, including overall survival (OS), recurrence-free survival (RFS), and local tumor progression (LTP). Multivariate analysis was performed on clinicopathological variables to identify the risk factors for OS and LTP. Results The median follow-up period was 21 months (range 3–44). Insertion number (5.4 ± 1.2 VS. 4.5 ± 0.9, P = 0.034), ablation time (1249.2 ± 654.2 s VS. 1082.4 ± 584.7 s, P = 0.048), ablation energy (57,000 ± 11,892 J VS. 42,600 ± 10,271 J, P = 0.038) and success rate of first ablation (95.0% VS. 85.7%, P = 0.033) were higher in the 3D planning group compared with those in 2D planning group. There was no statistical difference in OS, and RFS between the two groups (P = 0.995, P = 0.845). LTP rate of 3D planning group was less than that of 2D planning group (16.5% VS 41.2%, P = 0.003). Multivariate analysis showed tumor maximal diameters (P < 0.001), tumor number (P = 0.003) and preoperative TACE (P < 0.001) were predictors for OS and sessions (P = 0.024), a-fetoprotein level (P = 0.004), and preoperative planning (P = 0.002) were predictors for LTP, respectively. Conclusions 3DVAPS improves precision of US guided ablation resulting in lower LTP and higher 5 mm-AM for patients with HCC lesions larger than 3 cm in diameter.
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Affiliation(s)
- Chao An
- Department of Interventional Ultrasound, State Key Laboratory of Kidney Disease, The Chinese PLA General Hospital, No. 28, Fuxing Road, Beijing, 100853, People's Republic of China
| | - Xin Li
- Department of Interventional Ultrasound, State Key Laboratory of Kidney Disease, The Chinese PLA General Hospital, No. 28, Fuxing Road, Beijing, 100853, People's Republic of China
| | - Min Zhang
- Department of Interventional Ultrasound, State Key Laboratory of Kidney Disease, The Chinese PLA General Hospital, No. 28, Fuxing Road, Beijing, 100853, People's Republic of China.,Department of Ultrasound, General Hospital of Xinjiang Military Region, Urumqi, China
| | - Jian Yang
- Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Electronics, Beijing Institute of Technology, Beijing, 100081, China
| | - Zhigang Cheng
- Department of Interventional Ultrasound, State Key Laboratory of Kidney Disease, The Chinese PLA General Hospital, No. 28, Fuxing Road, Beijing, 100853, People's Republic of China
| | - Xiaoling Yu
- Department of Interventional Ultrasound, State Key Laboratory of Kidney Disease, The Chinese PLA General Hospital, No. 28, Fuxing Road, Beijing, 100853, People's Republic of China
| | - Zhiyu Han
- Department of Interventional Ultrasound, State Key Laboratory of Kidney Disease, The Chinese PLA General Hospital, No. 28, Fuxing Road, Beijing, 100853, People's Republic of China
| | - Fangyi Liu
- Department of Interventional Ultrasound, State Key Laboratory of Kidney Disease, The Chinese PLA General Hospital, No. 28, Fuxing Road, Beijing, 100853, People's Republic of China
| | - Linan Dong
- Department of Interventional Ultrasound, State Key Laboratory of Kidney Disease, The Chinese PLA General Hospital, No. 28, Fuxing Road, Beijing, 100853, People's Republic of China
| | - Jie Yu
- Department of Interventional Ultrasound, State Key Laboratory of Kidney Disease, The Chinese PLA General Hospital, No. 28, Fuxing Road, Beijing, 100853, People's Republic of China.
| | - Ping Liang
- Department of Interventional Ultrasound, State Key Laboratory of Kidney Disease, The Chinese PLA General Hospital, No. 28, Fuxing Road, Beijing, 100853, People's Republic of China.
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