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Heshmat A, O’Connor CS, Albuquerque Marques Silva J, Paolucci I, Jones AK, Odisio BC, Brock KK. Using Patient-Specific 3D Modeling and Simulations to Optimize Microwave Ablation Therapy for Liver Cancer. Cancers (Basel) 2024; 16:2095. [PMID: 38893214 PMCID: PMC11171243 DOI: 10.3390/cancers16112095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 05/25/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024] Open
Abstract
Microwave ablation (MWA) of liver tumors presents challenges like under- and over-ablation, potentially leading to inadequate tumor destruction and damage to healthy tissue. This study aims to develop personalized three-dimensional (3D) models to simulate MWA for liver tumors, incorporating patient-specific characteristics. The primary objective is to validate the predicted ablation zones compared to clinical outcomes, offering insights into MWA before therapy to facilitate accurate treatment planning. Contrast-enhanced CT images from three patients were used to create 3D models. The simulations used coupled electromagnetic wave propagation and bioheat transfer to estimate the temperature distribution, predicting tumor destruction and ablation margins. The findings indicate that prolonged ablation does not significantly improve tumor destruction once an adequate margin is achieved, although it increases tissue damage. There was a substantial overlap between the clinical ablation zones and the predicted ablation zones. For patient 1, the Dice score was 0.73, indicating high accuracy, with a sensitivity of 0.72 and a specificity of 0.76. For patient 2, the Dice score was 0.86, with a sensitivity of 0.79 and a specificity of 0.96. For patient 3, the Dice score was 0.8, with a sensitivity of 0.85 and a specificity of 0.74. Patient-specific 3D models demonstrate potential in accurately predicting ablation zones and optimizing MWA treatment strategies.
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Affiliation(s)
- Amirreza Heshmat
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030, USA; (C.S.O.); (A.K.J.); (K.K.B.)
| | - Caleb S. O’Connor
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030, USA; (C.S.O.); (A.K.J.); (K.K.B.)
| | - Jessica Albuquerque Marques Silva
- Department of Interventional Radiology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030, USA; (J.A.M.S.); (I.P.); (B.C.O.)
| | - Iwan Paolucci
- Department of Interventional Radiology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030, USA; (J.A.M.S.); (I.P.); (B.C.O.)
| | - Aaron Kyle Jones
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030, USA; (C.S.O.); (A.K.J.); (K.K.B.)
| | - Bruno C. Odisio
- Department of Interventional Radiology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030, USA; (J.A.M.S.); (I.P.); (B.C.O.)
| | - Kristy K. Brock
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030, USA; (C.S.O.); (A.K.J.); (K.K.B.)
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Zhang J, Guo G, Li T, Guo C, Han Y, Zhou X. Long-term survival analysis of ultrasound-guided percutaneous microwave ablation for hepatocellular carcinoma conforming to the Milan criteria: primary versus recurrent HCC. Int J Hyperthermia 2024; 41:2318829. [PMID: 38467417 DOI: 10.1080/02656736.2024.2318829] [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: 08/30/2023] [Accepted: 02/09/2024] [Indexed: 03/13/2024] Open
Abstract
BACKGROUND This study compared long-term outcomes between patients with initial hepatocellular carcinoma (IHCC) and those with recurrent HCC (RHCC) treated with microwave ablation (MWA). METHODS This retrospective study included 425 patients with HCCs (294 IHCCs and 131 RHCCs) within the Milan criteria who were treated with ultrasound-guided percutaneous MWA between January 2008 and November 2021. All patients with RHCC had previously undergone MWA for initial HCC. Overall survival (OS) and recurrence-free survival (RFS) rates were compared between the IHCC and RHCC groups before and after propensity score matching (PSM). RESULTS Before matching, the 1-, 3-, 5-, and 10-year OS rates in the IHCC group were 95.9%, 78.5%, 60.2%, and 42.5%, respectively, which were significantly higher than those in the RHCC group (93.8%, 70.0%, 42.0%, and 6.6%, respectively). This difference remained significant after PSM. However, subgroup analyses suggested that there were no significant differences in OS rates between IHCC and RHCC in patients with solitary HCC ≤3.0 cm, AFP ≤200 ng/mL, ablative margins ≥0.5 cm, or Albumin-Bilirubin (ALBI) grade 1. RFS was significantly higher in IHCC than in RHCC before and after PSM, as well as in subgroup analyses. ALBI grade (hazard ratio (HR), 2.38; 95% CI: 1.46-3.86; p < 0.001), serum AFP level (HR, 2.07; 95% CI: 1.19-3.62; p = 0.010) and ablative margins (HR, 0.18; 95% CI: 0.06-0.59; p = 0.005) were independent prognostic factors for OS of RHCC. Serum AFP(HR, 1.29; 95% CI: 1.02-1.63, p = 0.036) level was the only factor associated with RFS in RHCC. CONCLUSIONS MWA yielded comparable OS in IHCC and RHCC patients with solitary HCC ≤3.0 cm, AFP ≤200 ng/mL, ablative margins ≥0.5 cm, or ALBI grade 1.
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Affiliation(s)
- Jing Zhang
- State Key Laboratory of Cancer Biology & XiJing Hospital of Digestive Diseases, Air Force Medical University, Xi'an, China
| | - Guanya Guo
- State Key Laboratory of Cancer Biology & XiJing Hospital of Digestive Diseases, Air Force Medical University, Xi'an, China
| | - Tao Li
- State Key Laboratory of Cancer Biology & XiJing Hospital of Digestive Diseases, Air Force Medical University, Xi'an, China
| | - Changcun Guo
- State Key Laboratory of Cancer Biology & XiJing Hospital of Digestive Diseases, Air Force Medical University, Xi'an, China
| | - Ying Han
- State Key Laboratory of Cancer Biology & XiJing Hospital of Digestive Diseases, Air Force Medical University, Xi'an, China
| | - Xinmin Zhou
- State Key Laboratory of Cancer Biology & XiJing Hospital of Digestive Diseases, Air Force Medical University, Xi'an, China
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Lee KH, Li M, Varble N, Negussie AH, Kassin MT, Arrichiello A, Carrafiello G, Hazen LA, Wakim PG, Li X, Xu S, Wood BJ. Smartphone Augmented Reality Outperforms Conventional CT Guidance for Composite Ablation Margins in Phantom Models. J Vasc Interv Radiol 2024; 35:452-461.e3. [PMID: 37852601 DOI: 10.1016/j.jvir.2023.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 09/23/2023] [Accepted: 10/08/2023] [Indexed: 10/20/2023] Open
Abstract
PURPOSE To develop and evaluate a smartphone augmented reality (AR) system for a large 50-mm liver tumor ablation with treatment planning for composite overlapping ablation zones. MATERIALS AND METHODS A smartphone AR application was developed to display tumor, probe, projected probe paths, ablated zones, and real-time percentage of the ablated target tumor volume. Fiducial markers were attached to phantoms and an ablation probe hub for tracking. The system was evaluated with tissue-mimicking thermochromic phantoms and gel phantoms. Four interventional radiologists performed 2 trials each of 3 probe insertions per trial using AR guidance versus computed tomography (CT) guidance approaches in 2 gel phantoms. Insertion points and optimal probe paths were predetermined. On Gel Phantom 2, serial ablated zones were saved and continuously displayed after each probe placement/adjustment, enabling feedback and iterative planning. The percentages of tumor ablated for AR guidance versus CT guidance, and with versus without display of recorded ablated zones, were compared among interventional radiologists with pairwise t-tests. RESULTS The means of percentages of tumor ablated for CT freehand and AR guidance were 36% ± 7 and 47% ± 4 (P = .004), respectively. The mean composite percentages of tumor ablated for AR guidance were 43% ± 1 (without) and 50% ± 2 (with display of ablation zone) (P = .033). There was no strong correlation between AR-guided percentage of ablation and years of experience (r < 0.5), whereas there was a strong correlation between CT-guided percentage of ablation and years of experience (r > 0.9). CONCLUSIONS A smartphone AR guidance system for dynamic iterative large liver tumor ablation was accurate, performed better than conventional CT guidance, especially for less experienced interventional radiologists, and enhanced more standardized performance across experience levels for ablation of a 50-mm tumor.
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Affiliation(s)
- Katerina H Lee
- McGovern Medical School at UTHealth, Houston, Texas; Center for Interventional Oncology, National Institutes of Health, Bethesda, Maryland
| | - Ming Li
- Center for Interventional Oncology, National Institutes of Health, Bethesda, Maryland
| | - Nicole Varble
- Center for Interventional Oncology, National Institutes of Health, Bethesda, Maryland; Philips Research North America, Cambridge, Massachusetts
| | - Ayele H Negussie
- Center for Interventional Oncology, National Institutes of Health, Bethesda, Maryland
| | - Michael T Kassin
- Center for Interventional Oncology, National Institutes of Health, Bethesda, Maryland
| | - Antonio Arrichiello
- Center for Interventional Oncology, National Institutes of Health, Bethesda, Maryland
| | - Gianpaolo Carrafiello
- Department of Radiology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy
| | - Lindsey A Hazen
- Center for Interventional Oncology, National Institutes of Health, Bethesda, Maryland
| | - Paul G Wakim
- Biostatistics and Clinical Epidemiology Service, National Institutes of Health, Bethesda, Maryland
| | - Xiaobai Li
- Biostatistics and Clinical Epidemiology Service, National Institutes of Health, Bethesda, Maryland
| | - Sheng Xu
- Center for Interventional Oncology, National Institutes of Health, Bethesda, Maryland
| | - Bradford J Wood
- Center for Interventional Oncology, National Institutes of Health, Bethesda, Maryland.
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Dong LN, Wang S, Dong G, Kong D, Liang P. MRI non-rigid registration with tumor contraction correction for ablative margin assessment after microwave ablation of hepatocellular carcinomas. Phys Med Biol 2024; 69:055004. [PMID: 38271728 DOI: 10.1088/1361-6560/ad22a3] [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: 09/18/2023] [Accepted: 01/25/2024] [Indexed: 01/27/2024]
Abstract
Objective. This study aims to develop and assess a tumor contraction model, enhancing the precision of ablative margin (AM) evaluation after microwave ablation (MWA) treatment for hepatocellular carcinomas (HCCs).Approach. We utilize a probabilistic method called the coherent point drift algorithm to align pre-and post-ablation MRI images. Subsequently, a nonlinear regression method quantifies local tumor contraction induced by MWA, utilizing data from 47 HCC with viable ablated tumors in post-ablation MRI. After automatic non-rigid registration, correction for tumor contraction involves contracting the 3D contour of the warped tumor towards its center in all orientations.Main results. We evaluate the performance of our proposed method on 30 HCC patients who underwent MWA. The Dice similarity coefficient between the post-ablation liver and the warped pre-ablation livers is found to be 0.95 ± 0.01, with a mean corresponding distance between the corresponding landmarks measured at 3.25 ± 0.62 mm. Additionally, we conduct a comparative analysis of clinical outcomes assessed through MRI over a 3 month follow-up period, noting that the AM, as evaluated by our proposed method, accurately detects residual tumor after MWA.Significance. Our proposed method showcases a high level of accuracy in MRI liver registration and AM assessment following ablation treatment. It introduces a potentially approach for predicting incomplete ablations and gauging treatment success.
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Affiliation(s)
- Li-Nan Dong
- School of Computer Science and Technology, Dalian University of Technology, Dalian, 116086, People's Republic of China
- Department of Interventional Ultrasound, Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100853, People's Republic of China
| | - Shouchao Wang
- School of Mathematical Sciences, Zhejiang University, Hangzhou, 310007, People's Republic of China
| | - Guoping Dong
- Department of Interventional Ultrasound, Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100853, People's Republic of China
- Chinese PLA Medical School, Beijing 100853, People's Republic of China
| | - Dexing Kong
- School of Mathematical Sciences, Zhejiang University, Hangzhou, 310007, People's Republic of China
| | - Ping Liang
- Department of Interventional Ultrasound, Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100853, People's Republic of China
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Iheanacho F, Rex N, Oueidat K, Collins S, Baird GL, Kim D, Dubel GJ, Jay BS, Maxwell AWP. Prospective Margin Estimates Predict Local Tumor Progression Following Microwave Ablation of Small Renal Masses. Cardiovasc Intervent Radiol 2024; 47:200-207. [PMID: 38151603 DOI: 10.1007/s00270-023-03635-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 11/26/2023] [Indexed: 12/29/2023]
Abstract
PURPOSE To evaluate the relationship between prospectively generated ablative margin estimates and local tumor progression (LTP) among patients undergoing microwave ablation (MWA) of small renal masses (SRMs). MATERIALS AND METHODS Between 2017 and 2020, patients who underwent MWA for SRM were retrospectively identified. During each procedure, segmented kidney and tumor shapes were coregistered with intraprocedural helical CT images obtained after microwave antenna placement. Predicted ablation zone shape and size were then overlaid onto the resultant model, and a model-to-model distance algorithm was employed to calculate multiple ablative margin estimates. LTP was modeled as a function of each margin estimate by hazard regression. Models were evaluated using hazard ratios and Akaike information criterion. Receiver operating characteristic curve area under the curve was also estimated using Harrell's and Uno's C indices (HI and UI, respectively). RESULTS One hundred and twenty-eight patients were evaluated (median age 72.1 years). Mean tumor diameter was 2.4 ± 0.9 cm. LTP was observed in nine (7%) patients. Analysis showed that decreased estimated margin size as measured by first quartile (Q1; 25th percentile), maximum, and average ablative margin metrics was significantly associated with risk of LTP. For every one millimeter increase in Q1, maximum, and mean ablative margin, the hazard of LTP increased 67% (HR: 1.67; 95% CI = 1.25-2.20, UI = 0.93, HI = 0.77), 32% (HR: 1.32; 95% CI 1.09-1.60; UI = 0.93; HI = 0.76), and 48% (HR: 1.48; 95% CI 1.18-1.85; UI = 0.83; HI = 0.75), respectively. CONCLUSION Prospectively generated ablative margin estimates can be used to predict the risk of local tumor progression following microwave ablation of small renal masses. LEVEL OF EVIDENCE 3: Retrospective cohort study.
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Affiliation(s)
- Franklin Iheanacho
- Department of Diagnostic Imaging, The Warren Alpert Medical School of Brown University, 593 Eddy Street, Providence, RI, 02903, USA
| | - Nathaniel Rex
- Department of Diagnostic Imaging, The Warren Alpert Medical School of Brown University, 593 Eddy Street, Providence, RI, 02903, USA
| | - Karim Oueidat
- Department of Diagnostic Imaging, The Warren Alpert Medical School of Brown University, 593 Eddy Street, Providence, RI, 02903, USA.
| | - Scott Collins
- Department of Diagnostic Imaging, The Warren Alpert Medical School of Brown University, 593 Eddy Street, Providence, RI, 02903, USA
| | - Grayson L Baird
- Department of Diagnostic Imaging, The Warren Alpert Medical School of Brown University, 593 Eddy Street, Providence, RI, 02903, USA
| | - DaeHee Kim
- Department of Diagnostic Imaging, The Warren Alpert Medical School of Brown University, 593 Eddy Street, Providence, RI, 02903, USA
| | - Gregory J Dubel
- Department of Diagnostic Imaging, The Warren Alpert Medical School of Brown University, 593 Eddy Street, Providence, RI, 02903, USA
| | - Bryan S Jay
- Department of Diagnostic Imaging, The Warren Alpert Medical School of Brown University, 593 Eddy Street, Providence, RI, 02903, USA
| | - Aaron W P Maxwell
- Department of Diagnostic Imaging, The Warren Alpert Medical School of Brown University, 593 Eddy Street, Providence, RI, 02903, USA
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Hendriks P, van Dijk KM, Boekestijn B, Broersen A, van Duijn-de Vreugd JJ, Coenraad MJ, Tushuizen ME, van Erkel AR, van der Meer RW, van Rijswijk CS, Dijkstra J, de Geus-Oei LF, Burgmans MC. Intraprocedural assessment of ablation margins using computed tomography co-registration in hepatocellular carcinoma treatment with percutaneous ablation: IAMCOMPLETE study. Diagn Interv Imaging 2024; 105:57-64. [PMID: 37517969 DOI: 10.1016/j.diii.2023.07.002] [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: 03/27/2023] [Revised: 06/20/2023] [Accepted: 07/18/2023] [Indexed: 08/01/2023]
Abstract
PURPOSE The primary objective of this study was to determine the feasibility of ablation margin quantification using a standardized scanning protocol during thermal ablation (TA) of hepatocellular carcinoma (HCC), and a rigid registration algorithm. Secondary objectives were to determine the inter- and intra-observer variability of tumor segmentation and quantification of the minimal ablation margin (MAM). MATERIALS AND METHODS Twenty patients who underwent thermal ablation for HCC were included. There were thirteen men and seven women with a mean age of 67.1 ± 10.8 (standard deviation [SD]) years (age range: 49.1-81.1 years). All patients underwent contrast-enhanced computed tomography examination under general anesthesia directly before and after TA, with preoxygenated breath hold. Contrast-enhanced computed tomography examinations were analyzed by radiologists using rigid registration software. Registration was deemed feasible when accurate rigid co-registration could be obtained. Inter- and intra-observer rates of tumor segmentation and MAM quantification were calculated. MAM values were correlated with local tumor progression (LTP) after one year of follow-up. RESULTS Co-registration of pre- and post-ablation images was feasible in 16 out of 20 patients (80%) and 26 out of 31 tumors (84%). Mean Dice similarity coefficient for inter- and intra-observer variability of tumor segmentation were 0.815 and 0.830, respectively. Mean MAM was 0.63 ± 3.589 (SD) mm (range: -6.26-6.65 mm). LTP occurred in four out of 20 patients (20%). The mean MAM value for patients who developed LTP was -4.00 mm, as compared to 0.727 mm for patients who did not develop LTP. CONCLUSION Ablation margin quantification is feasible using a standardized contrast-enhanced computed tomography protocol. Interpretation of MAM was hampered by the occurrence of tissue shrinkage during TA. Further validation in a larger cohort should lead to meaningful cut-off values for technical success of TA.
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Affiliation(s)
- Pim Hendriks
- Department of Radiology, Leiden University Medical Center, 2333 ZA, Leiden, the Netherlands.
| | - Kiki M van Dijk
- Department of Radiology, Leiden University Medical Center, 2333 ZA, Leiden, the Netherlands
| | - Bas Boekestijn
- Department of Radiology, Leiden University Medical Center, 2333 ZA, Leiden, the Netherlands
| | - Alexander Broersen
- LKEB Laboratory of Clinical and Experimental Imaging, Department of Radiology, Leiden University Medical Center, 2333 ZA, Leiden, the Netherlands
| | | | - Minneke J Coenraad
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, 2333 ZA Leiden, the Netherlands
| | - Maarten E Tushuizen
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, 2333 ZA Leiden, the Netherlands
| | - Arian R van Erkel
- Department of Radiology, Leiden University Medical Center, 2333 ZA, Leiden, the Netherlands
| | - Rutger W van der Meer
- Department of Radiology, Leiden University Medical Center, 2333 ZA, Leiden, the Netherlands
| | | | - Jouke Dijkstra
- LKEB Laboratory of Clinical and Experimental Imaging, Department of Radiology, Leiden University Medical Center, 2333 ZA, Leiden, the Netherlands
| | - Lioe-Fee de Geus-Oei
- Department of Radiology, Leiden University Medical Center, 2333 ZA, Leiden, the Netherlands; Biomedical Photonic Imaging Group, TechMed Centre, University of Twente, 7522 NB, Enschede, the Netherlands; Department of Radiation Science & Technology, Delft University of Technology, 2628 CD, Delft, the Netherlands
| | - Mark C Burgmans
- Department of Radiology, Leiden University Medical Center, 2333 ZA, Leiden, the Netherlands
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Schröer S, Alpers J, Gutberlet M, Brüsch I, Rumpel R, Wacker F, Hensen B, Hansen C. A probabilistic thermal dose model for the estimation of necrosis in MR-guided tumor ablations. Med Phys 2024; 51:239-250. [PMID: 37449443 DOI: 10.1002/mp.16605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 04/25/2023] [Accepted: 06/20/2023] [Indexed: 07/18/2023] Open
Abstract
BACKGROUND Monitoring minimally invasive thermo ablation procedures using magnetic resonance (MR) thermometry allows therapy of tumors even close to critical anatomical structures. Unfortunately, intraoperative monitoring remains challenging due to the necessary accuracy and real-time capability. One reason for this is the statistical error introduced by MR measurement, which causes the prediction of ablation zones to become inaccurate. PURPOSE In this work, we derive a probabilistic model for the prediction of ablation zones during thermal ablation procedures based on the thermal damage model CEM43 . By integrating the statistical error caused by MR measurement into the conventional prediction, we hope to reduce the amount of falsely classified voxels. METHODS The probabilistic CEM43 model is empirically evaluated using a polyacrilamide gel phantom and three in-vivo pig livers. RESULTS The results show a higher accuracy in three out of four data sets, with a relative difference in Sørensen-Dice coefficient from- 3.04 % $-3.04\%$ to 3.97% compared to the conventional model. Furthermore, the ablation zones predicted by the probabilistic model show a false positive rate with a relative decrease of 11.89%-30.04% compared to the conventional model. CONCLUSION The presented probabilistic thermal dose model might help to prevent false classification of voxels within ablation zones. This could potentially result in an increased success rate for MR-guided thermal ablation procedures. Future work may address additional error sources and a follow-up study in a more realistic clinical context.
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Affiliation(s)
- Simon Schröer
- Department of Diagnostic and Interventional Radiology, Medical School Hanover, Hanover, Germany
- Department of Simulation and Graphics, Otto-von-Guericke-University, Magdeburg, Germany
| | - Julian Alpers
- Department of Simulation and Graphics, Otto-von-Guericke-University, Magdeburg, Germany
| | - Marcel Gutberlet
- Department of Diagnostic and Interventional Radiology, Medical School Hanover, Hanover, Germany
| | - Inga Brüsch
- Department of Laboratory Animal Science, Medical School Hanover, Hanover, Germany
| | - Regina Rumpel
- Department of Laboratory Animal Science, Medical School Hanover, Hanover, Germany
| | - Frank Wacker
- Department of Diagnostic and Interventional Radiology, Medical School Hanover, Hanover, Germany
| | - Bennet Hensen
- Department of Diagnostic and Interventional Radiology, Medical School Hanover, Hanover, Germany
| | - Christian Hansen
- Department of Simulation and Graphics, Otto-von-Guericke-University, Magdeburg, Germany
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Charalampopoulos G, Bale R, Filippiadis D, Odisio BC, Wood B, Solbiati L. Navigation and Robotics in Interventional Oncology: Current Status and Future Roadmap. Diagnostics (Basel) 2023; 14:98. [PMID: 38201407 PMCID: PMC10795729 DOI: 10.3390/diagnostics14010098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 12/26/2023] [Accepted: 12/30/2023] [Indexed: 01/12/2024] Open
Abstract
Interventional oncology (IO) is the field of Interventional Radiology that provides minimally invasive procedures under imaging guidance for the diagnosis and treatment of malignant tumors. Sophisticated devices can be utilized to increase standardization, accuracy, outcomes, and "repeatability" in performing percutaneous Interventional Oncology techniques. These technologies can reduce variability, reduce human error, and outperform human hand-to-eye coordination and spatial relations, thus potentially normalizing an otherwise broad diversity of IO techniques, impacting simulation, training, navigation, outcomes, and performance, as well as verification of desired minimum ablation margin or other measures of successful procedures. Stereotactic navigation and robotic systems may yield specific advantages, such as the potential to reduce procedure duration and ionizing radiation exposure during the procedure and, at the same time, increase accuracy. Enhanced accuracy, in turn, is linked to improved outcomes in many clinical scenarios. The present review focuses on the current role of percutaneous navigation systems and robotics in diagnostic and therapeutic Interventional Oncology procedures. The currently available alternatives are presented, including their potential impact on clinical practice as reflected in the peer-reviewed medical literature. A review of such data may inform wiser investment of time and resources toward the most impactful IR/IO applications of robotics and navigation to both standardize and address unmet clinical needs.
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Affiliation(s)
- Georgios Charalampopoulos
- 2nd Department of Radiology, University General Hospital “ATTIKON”, Medical School, National and Kapodistrian University of Athens, 1 Rimini Str, 12462 Athens, Greece;
| | - Reto Bale
- Interventional Oncology/Stereotaxy and Robotics, Department of Radiology, Medical University of Innsbruck, 6020 Innsbruck, Austria;
| | - Dimitrios Filippiadis
- 2nd Department of Radiology, University General Hospital “ATTIKON”, Medical School, National and Kapodistrian University of Athens, 1 Rimini Str, 12462 Athens, Greece;
| | - Bruno C. Odisio
- Department of Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
| | - Bradford Wood
- Interventional Radiology and Center for Interventional Oncology, NIH Clinical Center and National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA;
| | - Luigi Solbiati
- Department of Radiology, IRCCS Humanitas Research Hospital, Rozzano (Milano), Italy and Department of Biomedical Sciences, Humanitas University, Pieve Emanuele (Milano), 20072 Milano, Italy;
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Bale R, Laimer G, Schullian P, Alzaga A. Stereotactic ablation: A game changer? J Med Imaging Radiat Oncol 2023; 67:886-894. [PMID: 37401185 DOI: 10.1111/1754-9485.13555] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 06/23/2023] [Indexed: 07/05/2023]
Abstract
For both primary and metastatic liver cancer, thermal ablation represents an interesting alternative to surgery. However, except for a small fraction of patients, conventional ultrasound- and CT-guided single-probe approaches have not achieved oncologic outcomes comparable with surgery. In this overview, we describe our stereotactic ablation workflow and discuss the short- and long-term results of stereotactic radiofrequency ablation (SRFA) and stereotactic microwave ablation (SMWA) for the treatment of primary and secondary liver tumours. The advantages of this method are discussed together with a summary of the existing stereotactic techniques for thermal ablation and the clinical data that support them. Stereotactic ablation is based on an optical navigation system and a specialized aiming tool. The workflow includes advanced three-dimensional planning, precise needle/probe placements according to the plan and intraoperative image fusion to check the needle positions and the ablation margins. Stereotactic ablation offers all the advantages of a minimally invasive procedure while producing oncological results comparable with surgery. The number of locally treatable liver cancers may be significantly expanded with these cutting-edge instruments and methods. We firmly believe that it can become a cornerstone in the treatment of liver cancers.
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Affiliation(s)
- Reto Bale
- Interventional Oncology/Stereotaxy and Robotics, Department of Radiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Gregor Laimer
- Interventional Oncology/Stereotaxy and Robotics, Department of Radiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Peter Schullian
- Interventional Oncology/Stereotaxy and Robotics, Department of Radiology, Medical University of Innsbruck, Innsbruck, Austria
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Hendriks P, Boel F, Oosterveer TTM, Broersen A, de Geus-Oei LF, Dijkstra J, Burgmans MC. Ablation margin quantification after thermal ablation of malignant liver tumors: How to optimize the procedure? A systematic review of the available evidence. Eur J Radiol Open 2023; 11:100501. [PMID: 37405153 PMCID: PMC10316004 DOI: 10.1016/j.ejro.2023.100501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 06/21/2023] [Accepted: 06/23/2023] [Indexed: 07/06/2023] Open
Abstract
Introduction To minimize the risk of local tumor progression after thermal ablation of liver malignancies, complete tumor ablation with sufficient ablation margins is a prerequisite. This has resulted in ablation margin quantification to become a rapidly evolving field. The aim of this systematic review is to give an overview of the available literature with respect to clinical studies and technical aspects potentially influencing the interpretation and evaluation of ablation margins. Methods The Medline database was reviewed for studies on radiofrequency and microwave ablation of liver cancer, ablation margins, image processing and tissue shrinkage. Studies included in this systematic review were analyzed for qualitative and quantitative assessment methods of ablation margins, segmentation and co-registration methods, and the potential influence of tissue shrinkage occurring during thermal ablation. Results 75 articles were included of which 58 were clinical studies. In most clinical studies the aimed minimal ablation margin (MAM) was ≥ 5 mm. In 10/31 studies, MAM quantification was performed in 3D rather than in three orthogonal image planes. Segmentations were performed either semi-automatically or manually. Rigid and non-rigid co-registration algorithms were used about as often. Tissue shrinkage rates ranged from 7% to 74%. Conclusions There is a high variability in ablation margin quantification methods. Prospectively obtained data and a validated robust workflow are needed to better understand the clinical value. Interpretation of quantified ablation margins may be influenced by tissue shrinkage, as this may cause underestimation.
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Affiliation(s)
- Pim Hendriks
- Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Fleur Boel
- Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Timo TM Oosterveer
- Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Alexander Broersen
- LKEB Laboratory of Clinical and Experimental Imaging, Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Lioe-Fee de Geus-Oei
- Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
- Biomedical Photonic Imaging Group, University of Twente, the Netherlands
| | - Jouke Dijkstra
- LKEB Laboratory of Clinical and Experimental Imaging, Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Mark C Burgmans
- Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
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11
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Li R, An C, Wang S, Wang G, Zhao L, Yu Y, Wang L. A heuristic method for rapid and automatic radiofrequency ablation planning of liver tumors. Int J Comput Assist Radiol Surg 2023; 18:2213-2221. [PMID: 37145252 DOI: 10.1007/s11548-023-02921-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 04/14/2023] [Indexed: 05/06/2023]
Abstract
PURPOSE Preprocedural planning is a key step in radiofrequency ablation (RFA) treatment for liver tumors, which is a complex task with multiple constraints and relies heavily on the personal experience of interventional radiologists, and existing optimization-based automatic RFA planning methods are very time-consuming. In this paper, we aim to develop a heuristic RFA planning method to rapidly and automatically make a clinically acceptable RFA plan. METHODS First, the insertion direction is heuristically initialized based on tumor long axis. Then, the 3D RFA planning is divided into insertion path planning and ablation position planning, which are further simplified into 2D by projections along two orthogonal directions. Here, a heuristic algorithm based on regular arrangement and step-wise adjustment is proposed to implement the 2D planning tasks. Experiments are conducted on patients with liver tumors of different sizes and shapes from multicenter to evaluate the proposed method. RESULTS The proposed method automatically generated clinically acceptable RFA plans within 3 min for all cases in the test set and the clinical validation set. All RFA plans of our method achieve 100% treatment zone coverage without damaging the vital organs. Compared with the optimization-based method, the proposed method reduces the planning time by dozens of times while generating RFA plans with similar ablation efficiency. CONCLUSION The proposed method demonstrates a new way to rapidly and automatically generate clinically acceptable RFA plans with multiple clinical constraints. The plans of our method are consistent with the clinical actual plans on almost all cases, which demonstrates the effectiveness of the proposed method and can help reduce the burden on clinicians.
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Affiliation(s)
- Ruikun Li
- Department of Automation, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Chengyang An
- Department of Automation, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | | | - Guisheng Wang
- Department of Radiology, Third Medical Centre, Chinese PLA General Hospital, Beijing, 100036, China
| | - Lifeng Zhao
- Department of Radiology, Daqing Longnan Hospital, Daqing, 163453, China
| | - Yizhou Yu
- Deepwise AI Lab, Beijing, 100080, China.
| | - Lisheng Wang
- Department of Automation, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
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12
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Paolucci I, Bulatović M, Weber S, Tinguely P. Thermal ablation with configurable shapes: a comprehensive, automated model for bespoke tumor treatment. Eur Radiol Exp 2023; 7:67. [PMID: 37932631 PMCID: PMC10628015 DOI: 10.1186/s41747-023-00381-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 08/29/2023] [Indexed: 11/08/2023] Open
Abstract
BACKGROUND Malignant tumors routinely present with irregular shapes and complex configurations. The lack of customization to individual tumor shapes and standardization of procedures limits the success and application of thermal ablation. METHODS We introduced an automated treatment model consisting of (i) trajectory and ablation profile planning, (ii) ablation probe insertion, (iii) dynamic energy delivery (including robotically driven control of the energy source power and location over time, according to a treatment plan bespoke to the tumor shape), and (iv) quantitative ablation margin verification. We used a microwave ablation system and a liver phantom (acrylamide polymer with a thermochromic ink) to mimic coagulation and measure the ablation volume. We estimated the ablation width as a function of power and velocity following a probabilistic model. Four representative shapes of liver tumors < 5 cm were selected from two publicly available databases. The ablated specimens were cut along the ablation probe axis and photographed. The shape of the ablated volume was extracted using a color-based segmentation method. RESULTS The uncertainty (standard deviation) of the ablation width increased with increasing power by ± 0.03 mm (95% credible interval [0.02, 0.043]) per watt increase in power and by ± 0.85 mm (95% credible interval [0, 2.5]) per mm/s increase in velocity. Continuous ablation along a straight-line trajectory resulted in elongated rotationally symmetric ablation shapes. Simultaneous regulation of the power and/or translation velocity allowed to modulate the ablation width at specific locations. CONCLUSIONS This study offers the proof-of-principle of the dynamic energy delivery system using ablation shapes from clinical cases of malignant liver tumors. RELEVANCE STATEMENT The proposed automated treatment model could favor the customization and standardization of thermal ablation for complex tumor shapes. KEY POINTS • Current thermal ablation systems are limited to ellipsoidal or spherical shapes. • Dynamic energy delivery produces elongated rotationally symmetric ablation shapes with varying widths. • For complex tumor shapes, multiple customized ablation shapes could be combined.
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Affiliation(s)
- Iwan Paolucci
- ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland.
| | - Milica Bulatović
- ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Stefan Weber
- ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Pascale Tinguely
- ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland
- Department of Visceral Surgery and Medicine, Inselspital, University Hospital Bern, Bern, Switzerland
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13
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Ye F, Xie L, Liang L, Zhou Z, He S, Li R, Lin L, Zhu K. Mechanisms and therapeutic strategies to combat the recurrence and progression of hepatocellular carcinoma after thermal ablation. J Interv Med 2023; 6:160-169. [PMID: 38312128 PMCID: PMC10831380 DOI: 10.1016/j.jimed.2023.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 10/11/2023] [Accepted: 10/11/2023] [Indexed: 02/06/2024] Open
Abstract
Thermal ablation (TA), including radiofrequency ablation (RFA) and microwave ablation (MWA), has become the main treatment for early-stage hepatocellular carcinoma (HCC) due to advantages such as safety and minimal invasiveness. However, HCC is prone to local recurrence, with more aggressive malignancies after TA closely related to TA-induced changes in epithelial-mesenchymal transition (EMT) and remodeling of the tumor microenvironment (TME). According to many studies, various components of the TME undergo complex changes after TA, such as the recruitment of innate and adaptive immune cells, the release of tumor-associated antigens (TAAs) and various cytokines, the formation of a hypoxic microenvironment, and tumor angiogenesis. Changes in the TME after TA can partly enhance the anti-tumor immune response; however, this response is weak to kill the tumor completely. Certain components of the TME can induce an immunosuppressive microenvironment through complex interactions, leading to tumor recurrence and progression. How the TME is remodeled after TA and the mechanism by which the TME promotes HCC recurrence and progression are unclear. Thus, in this review, we focused on these issues to highlight potentially effective strategies for reducing and preventing the recurrence and progression of HCC after TA.
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Affiliation(s)
| | | | | | - Zhimei Zhou
- Laboratory of Interventional Radiology, Department of Minimally Invasive Interventional Radiology and Department of Radiology, The Second Affiliated Hospital of Guangzhou Medical University, 250 East Changgang Road, Guangzhou, Guangdong Province, 510260, China
| | - Siqin He
- Laboratory of Interventional Radiology, Department of Minimally Invasive Interventional Radiology and Department of Radiology, The Second Affiliated Hospital of Guangzhou Medical University, 250 East Changgang Road, Guangzhou, Guangdong Province, 510260, China
| | - Rui Li
- Laboratory of Interventional Radiology, Department of Minimally Invasive Interventional Radiology and Department of Radiology, The Second Affiliated Hospital of Guangzhou Medical University, 250 East Changgang Road, Guangzhou, Guangdong Province, 510260, China
| | - Liteng Lin
- Laboratory of Interventional Radiology, Department of Minimally Invasive Interventional Radiology and Department of Radiology, The Second Affiliated Hospital of Guangzhou Medical University, 250 East Changgang Road, Guangzhou, Guangdong Province, 510260, China
| | - Kangshun Zhu
- Laboratory of Interventional Radiology, Department of Minimally Invasive Interventional Radiology and Department of Radiology, The Second Affiliated Hospital of Guangzhou Medical University, 250 East Changgang Road, Guangzhou, Guangdong Province, 510260, China
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14
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Minami Y, Aoki T, Hagiwara S, Kudo M. Tips for Preparing and Practicing Thermal Ablation Therapy of Hepatocellular Carcinoma. Cancers (Basel) 2023; 15:4763. [PMID: 37835456 PMCID: PMC10571938 DOI: 10.3390/cancers15194763] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/19/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
Thermal ablation therapy, including radiofrequency ablation (RFA) and microwave ablation (MWA), is considered the optimal locoregional treatment for unresectable early-stage hepatocellular carcinomas (HCCs). Percutaneous image-guided ablation is a minimally invasive treatment that is being increasingly performed because it achieves good clinical outcomes with a lower risk of complications. However, the physics and principles of RFA and MWA markedly differ. Although percutaneous thermal ablation under image guidance may be challenging in HCC cases with limited access or a risk of thermal injury, a number of ablative techniques, each of which may be advantageous and disadvantageous for individual cases, are available. Furthermore, even when a HCC is eligible for ablation based on tumor selection and technical factors, additional patient factors may have an impact on whether it is the appropriate treatment choice. Therefore, a basic understanding of the advantages and limitations of each ablation device and imaging guidance technique, respectively, is important. We herein provide an overview of the basic principles of tissue heating in thermal ablation, clinical and laboratory parameters for ablation therapy, preprocedural management, imaging assessments of responses, and early adverse events. We also discuss associated challenges and how they may be overcome using optimized imaging techniques.
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Affiliation(s)
- Yasunori Minami
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Kindai University, 377-2 Ohno-Higashi Osaka-Sayama, Osaka 589-8511, Japan (M.K.)
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15
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Choi Y, Jeong YS, Hwang JS, Kim HC, Chung JW, Choi JW. C-Arm Computed Tomographic Image Fusion for Repetitive Transarterial Chemoembolization of Hepatocellular Carcinoma. J Comput Assist Tomogr 2023; 47:682-688. [PMID: 37707396 DOI: 10.1097/rct.0000000000001494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
OBJECTIVE The aim of this study was to evaluate the potential implications of fusion imaging with C-arm computed tomography (CACT) scans for repetitive conventional transarterial chemoembolization (cTACE) for hepatocellular carcinoma. MATERIALS AND METHODS Fifty-six cTACE sessions were performed using fusion CACT images from September 2020 to June 2021 in a tertiary referral center, and the data were retrospectively analyzed. Fusion of unenhanced and enhanced CACT images was considered when previously accumulated iodized oil hampered the identification of local tumor progression or intrahepatic distant metastasis (indication A), when a tumor was supplied by multiple arteries with different origins from the aorta and missing tumor enhancement was suspected (indication B), or when iodized oil distribution on immediate post-cTACE CACT images needed to be precisely compared with the pre-cTACE images (indication C). Fusion image quality, initial tumor response, time to local progression (TTLP) of index tumors, and time to progression (TTP) were evaluated. RESULTS The fusion quality was satisfactory with a mean misregistration distance of 1.4 mm. For the 40 patients with indication A, the initial tumor responses at 3 months were nonviable, equivocal, and viable in 27 (67.5%), 4 (10.0%), and 9 (22.5%) index tumors, respectively. The median TTLP and TTP were 14.8 months and 4.5 months, respectively. For 10 patients with indication B, the median TTLP and TTP were 8.3 months and 2.6 months, respectively. Among the 6 patients with indication C, 2 patients were additionally treated at the same cTACE session after confirming incomplete iodized oil uptake on fusion imaging. CONCLUSIONS Fusion CACT images are useful in patients with hepatocellular carcinoma undergoing repetitive cTACE.
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Affiliation(s)
- Yelim Choi
- From the Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
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16
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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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17
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Zirakchian Zadeh M, Yeh R, Kirov AS, Kunin HS, Gönen M, Sotirchos VS, Soares KS, Sofocleous CT. Gradient-based Volumetric PET Parameters on Immediate Pre-ablation FDG-PET Predict Local Tumor Progression in Patients with Colorectal Liver Metastasis Treated by Microwave Ablation. Cardiovasc Intervent Radiol 2023:10.1007/s00270-023-03470-6. [PMID: 37268735 DOI: 10.1007/s00270-023-03470-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 05/14/2023] [Indexed: 06/04/2023]
Abstract
PURPOSE This study aimed to evaluate the optimal method of segmentation of colorectal liver metastasis (CLM) on immediate pre-ablation PET scans and assess the prognostic value of quantitative pre-ablation PET parameters with regards to local tumor control. A secondary objective was to correlate the target tumor size estimation by PET methods with the tumor measurements on anatomical imaging. METHODOLOGY A prospectively accrued cohort of 55 CLMs (46 patients) treated with real-time 18F-FDG-PET/CT-guided percutaneous microwave ablation was followed-up for a median of 10.8 months (interquartile: 5.5-20.2). Total lesion glycolysis (TLG) and metabolic tumor volume (MTV) values of each CLM were derived from pre-ablation 18F-FDG-PET with gradient and threshold PET segmentation methodologies. The event was defined as local tumor progression (LTP). Time-dependent receiver operating characteristic (ROC) curve analyses were used to assess area under the curves (AUCs). Intraclass correlation (ICC) and 95.0% confidence interval (CI) were performed to measure the linear relationships between the continuous variables. RESULTS AUCs for prediction of LTP obtained from time-dependent ROC analysis for the gradient technique were higher in comparison to the threshold methodologies (AUCs for TLG and volume were: 0.790 and 0.807, respectively). ICC between PET gradient-based and anatomical measurements were higher in comparison to threshold methodologies (ICC for the longest diameter: 733 (95.0% CI 0.538-0.846), ICC for the shortest diameter: .747 (95.0% CI 0.546-0.859), p-values < 0.001). CONCLUSIONS The gradient-based technique had a higher AUC for prediction of LTP after microwave ablation of CLM and showed the highest correlation with anatomical imaging tumor measurements.
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Affiliation(s)
- Mahdi Zirakchian Zadeh
- Interventional Oncology/Radiology Service, Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, IR Suite H118, New York, NY, 10075, USA
| | - Randy Yeh
- Molecular Imaging and Therapy Service, Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Assen S Kirov
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Henry S Kunin
- Interventional Oncology/Radiology Service, Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, IR Suite H118, New York, NY, 10075, USA
| | - Mithat Gönen
- Biostatistics Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Vlasios S Sotirchos
- Interventional Oncology/Radiology Service, Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, IR Suite H118, New York, NY, 10075, USA
| | - Kevin S Soares
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Constantinos T Sofocleous
- Interventional Oncology/Radiology Service, Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, IR Suite H118, New York, NY, 10075, USA.
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Rai P, Ansari MY, Warfa M, Al-Hamar H, Abinahed J, Barah A, Dakua SP, Balakrishnan S. Efficacy of fusion imaging for immediate post-ablation assessment of malignant liver neoplasms: A systematic review. Cancer Med 2023. [PMID: 37191030 DOI: 10.1002/cam4.6089] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 04/27/2023] [Accepted: 05/05/2023] [Indexed: 05/17/2023] Open
Abstract
BACKGROUND Percutaneous thermal ablation has become the preferred therapeutic treatment option for liver cancers that cannot be resected. Since ablative zone tissue changes over time, it becomes challenging to determine therapy effectiveness over an extended period. Thus, an immediate post-procedural evaluation of the ablation zone is crucial, as it could influence the need for a second-look treatment or follow-up plan. Assessing treatment response immediately after ablation is essential to attain favorable outcomes. This study examines the efficacy of image fusion strategies immediately post-ablation in liver neoplasms to determine therapeutic response. METHODOLOGY A comprehensive systematic search using PRISMA methodology was conducted using EMBASE, MEDLINE (via PUBMED), and Cochrane Library Central Registry electronic databases to identify articles that assessed the immediate post-ablation response in malignant hepatic tumors with fusion imaging (FI) systems. The data were retrieved on relevant clinical characteristics, including population demographics, pre-intervention clinical history, lesion characteristics, and intervention type. For the outcome metrics, variables such as average fusion time, intervention metrics, technical success rate, ablative safety margin, supplementary ablation rate, technical efficacy rate, LTP rates, and reported complications were extracted. RESULTS Twenty-two studies were included for review after fulfilling the study eligibility criteria. FI's immediate technical success rate ranged from 81.3% to 100% in 17/22 studies. In 16/22 studies, the ablative safety margin was assessed immediately after ablation. Supplementary ablation was performed in 9 studies following immediate evaluation by FI. In 15/22 studies, the technical effectiveness rates during the first follow-up varied from 89.3% to 100%. CONCLUSION Based on the studies included, we found that FI can accurately determine the immediate therapeutic response in liver cancer ablation image fusion and could be a feasible intraprocedural tool for determining short-term post-ablation outcomes in unresectable liver neoplasms. There are some technical challenges that limit the widespread adoption of FI techniques. Large-scale randomized trials are warranted to improve on existing protocols. Future research should emphasize improving FI's technological capabilities and clinical applicability to a broader range of tumor types and ablation procedures.
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Affiliation(s)
- Pragati Rai
- Department of Surgery, Hamad Medical Corporation, Doha, Qatar
| | | | - Mohammed Warfa
- Department of Clinical Imaging, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
| | - Hammad Al-Hamar
- Department of Clinical Imaging, Hamad Medical Corporation, Doha, Qatar
| | - Julien Abinahed
- Department of Surgery, Hamad Medical Corporation, Doha, Qatar
| | - Ali Barah
- Department of Clinical Imaging, Hamad Medical Corporation, Doha, Qatar
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19
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Xing S, Romero JC, Roy P, Cool DW, Tessier D, Chen ECS, Peters TM, Fenster A. 3D US-CT/MRI registration for percutaneous focal liver tumor ablations. Int J Comput Assist Radiol Surg 2023:10.1007/s11548-023-02915-0. [PMID: 37162735 DOI: 10.1007/s11548-023-02915-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 04/10/2023] [Indexed: 05/11/2023]
Abstract
PURPOSE US-guided percutaneous focal liver tumor ablations have been considered promising curative treatment techniques. To address cases with invisible or poorly visible tumors, registration of 3D US with CT or MRI is a critical step. By taking advantage of deep learning techniques to efficiently detect representative features in both modalities, we aim to develop a 3D US-CT/MRI registration approach for liver tumor ablations. METHODS Facilitated by our nnUNet-based 3D US vessel segmentation approach, we propose a coarse-to-fine 3D US-CT/MRI image registration pipeline based on the liver vessel surface and centerlines. Then, phantom, healthy volunteer and patient studies are performed to demonstrate the effectiveness of our proposed registration approach. RESULTS Our nnUNet-based vessel segmentation model achieved a Dice score of 0.69. In healthy volunteer study, 11 out of 12 3D US-MRI image pairs were successfully registered with an overall centerline distance of 4.03±2.68 mm. Two patient cases achieved target registration errors (TRE) of 4.16 mm and 5.22 mm. CONCLUSION We proposed a coarse-to-fine 3D US-CT/MRI registration pipeline based on nnUNet vessel segmentation models. Experiments based on healthy volunteers and patient trials demonstrated the effectiveness of our registration workflow. Our code and example data are publicly available in this r epository.
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Affiliation(s)
- Shuwei Xing
- Robarts Research Institute, Western University, 100 Perth St., London, ON, N6A 5B7, Canada.
- School of Biomedical Engineering, Western University, 100 Perth St., London, ON, N6A 5B7, Canada.
| | - Joeana Cambranis Romero
- Robarts Research Institute, Western University, 100 Perth St., London, ON, N6A 5B7, Canada
- School of Biomedical Engineering, Western University, 100 Perth St., London, ON, N6A 5B7, Canada
| | - Priyanka Roy
- Robarts Research Institute, Western University, 100 Perth St., London, ON, N6A 5B7, Canada
- Lawson Health Research Institute, 100 Perth St., London, N6A 5B7, ON, Canada
| | - Derek W Cool
- Department of Medical Imaging, Western University, 100 Perth St., London, ON, N6A 5B7, Canada
- Lawson Health Research Institute, 100 Perth St., London, N6A 5B7, ON, Canada
| | - David Tessier
- Robarts Research Institute, Western University, 100 Perth St., London, ON, N6A 5B7, Canada
| | - Elvis C S Chen
- Robarts Research Institute, Western University, 100 Perth St., London, ON, N6A 5B7, Canada
- School of Biomedical Engineering, Western University, 100 Perth St., London, ON, N6A 5B7, Canada
- Department of Medical Biophysics, Western University, 100 Perth St., London, ON, N6A 5B7, Canada
- Department of Medical Imaging, Western University, 100 Perth St., London, ON, N6A 5B7, Canada
- Lawson Health Research Institute, 100 Perth St., London, N6A 5B7, ON, Canada
| | - Terry M Peters
- Robarts Research Institute, Western University, 100 Perth St., London, ON, N6A 5B7, Canada
- School of Biomedical Engineering, Western University, 100 Perth St., London, ON, N6A 5B7, Canada
- Department of Medical Biophysics, Western University, 100 Perth St., London, ON, N6A 5B7, Canada
- Department of Medical Imaging, Western University, 100 Perth St., London, ON, N6A 5B7, Canada
| | - Aaron Fenster
- Robarts Research Institute, Western University, 100 Perth St., London, ON, N6A 5B7, Canada
- School of Biomedical Engineering, Western University, 100 Perth St., London, ON, N6A 5B7, Canada
- Department of Medical Biophysics, Western University, 100 Perth St., London, ON, N6A 5B7, Canada
- Department of Medical Imaging, Western University, 100 Perth St., London, ON, N6A 5B7, Canada
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20
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Targeted exome-based predictors of patterns of progression of colorectal liver metastasis after percutaneous thermal ablation. Br J Cancer 2023; 128:130-136. [PMID: 36319850 PMCID: PMC9814547 DOI: 10.1038/s41416-022-02030-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 10/07/2022] [Accepted: 10/14/2022] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Percutaneous thermal ablation is a curative-intent locoregional therapy (LRT) for selected patients with unresectable colorectal liver metastasis (CLM). Several factors have been identified that contribute to local tumour control after ablation. However, factors contributing to disease progression outside the ablation zone after ablation are poorly understood. METHODS In this retrospective study, using next-generation sequencing, we identified genetic biomarkers associated with different patterns of progression following thermal ablation of CLM. RESULTS A total of 191 ablation naïve patients between January 2011 and March 2020 were included in the analysis, and 101 had genomic profiling available. Alterations in the TGFβ pathway were associated with increased risk of development of new intrahepatic tumours (hazard ratio [HR], 2.75, 95% confidence interval [95% CI] 1.39-5.45, P = 0.004); and alterations in the Wnt pathway were associated with increased probability of receiving salvage LRT for any intrahepatic progression (HR, 5.8, 95% CI 1.94-19.5, P = 0.003). CONCLUSIONS Our findings indicate that genomic alterations in cancer-related signalling pathways can predict different progression patterns and the likelihood of receiving salvage LRT following percutaneous thermal ablation of CLM.
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Li L, Yao J, Yan X, Qi X, Liang P, Han Z, Liu F, Cheng Z, Luo Y, Zheng R, Cheng W, Wei Q, Yu S, Yu J, Yu X. Long-term efficacy and safety of microwave ablation for hepatocellular carcinoma adjacent to the gallbladder with a diameter ≤ 5 cm: a multicenter, propensity score matching study. Int J Hyperthermia 2023; 40:2248425. [PMID: 37607775 DOI: 10.1080/02656736.2023.2248425] [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: 04/28/2023] [Revised: 08/07/2023] [Accepted: 08/09/2023] [Indexed: 08/24/2023] Open
Abstract
OBJECTIVE To compare the long-term efficacy and safety of microwave ablation (MWA) as first-line therapy for hepatocellular carcinoma (HCC) adjacent versus nonadjacent to the gallbladder. MATERIALS AND METHODS From 2006 to 2018, 657 patients with ≤5 cm HCC who underwent percutaneous ultrasound-guided MWA as first-line therapy from 5 hospitals were enrolled in this retrospective study. Patients were grouped into the adjacent group (n = 49) and the nonadjacent group (n = 608) according to whether the tumor was adjacent to the gallbladder. Propensity score matching (PSM) was used to balance baseline variables between the two groups. RESULTS Forty-eight patient pairs were matched after PSM. For the PSM cohort, during a median follow-up time of 60 months, there were no differences in PFS (hazard ratio [HR], 1.011; 95% confidence interval [CI], 0.647-1.578; p = 0.963) or OS (HR 0.925; 95% CI 0.522-1.639; p = 0.789) between the adjacent and nonadjacent groups. Univariate and multivariate analyses revealed that the tumor adjacent to the gallbladder was not an independent risk factor for PFS or OS (all p > 0.05). Subgroup analysis showed comparable PFS and OS between the two groups in the <3 cm subgroup and the 3-5 cm subgroups (all p > 0.05). In addition to more use of assistive technology (p < 0.05), the adjacent group shared comparable local tumor progression, complications, technical success rate, and hospital stay (all p > 0.05) to the nonadjacent group. CONCLUSION There were comparable long-term efficacy and complications between patients with HCC adjacent and nonadjacent to the gallbladder treated with MWA.
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Affiliation(s)
- Lijuan Li
- Department of Interventional Ultrasound, the First Medical Center of Chinese PLA General Hospital, Beijing, China
- Medical School of Chinese PLA, Beijing, China
| | - Jundong Yao
- Department of Interventional Ultrasound, the First Medical Center of Chinese PLA General Hospital, Beijing, China
- Medical School of Chinese PLA, Beijing, China
| | - Xizi Yan
- Department of Interventional Ultrasound, the First Medical Center of Chinese PLA General Hospital, Beijing, China
- Medical School of Chinese PLA, Beijing, China
| | - Xiaoguang Qi
- Department of Interventional Ultrasound, the First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Ping Liang
- Department of Ultrasound, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Zhiyu Han
- Department of Ultrasound, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Fangyi Liu
- Department of Ultrasound, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Zhigang Cheng
- Department of Ultrasound, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Yanchun Luo
- Department of Ultrasound, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Rongqin Zheng
- Department of Medical Ultrasonics, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Wen Cheng
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, China
| | - Qiang Wei
- Department of Ultrasound, The Second Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Songyuan Yu
- Department of Ultrasound, Wuhan University of Science and Technology, Tianyou Hospital, Wuhan, China
| | - Jie Yu
- Department of Ultrasound, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Xiaoling Yu
- Department of Interventional Ultrasound, the First Medical Center of Chinese PLA General Hospital, Beijing, China
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The tumor ghost on MRI after microwave ablation for hepatocellular carcinoma: A new modality to assess the ablative margin. Eur J Radiol 2023; 158:110617. [PMID: 36463706 DOI: 10.1016/j.ejrad.2022.110617] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/25/2022] [Accepted: 11/17/2022] [Indexed: 11/27/2022]
Abstract
PURPOSE The ablated tumor ghost can be visually distinguished on MR images after ablation. This retrospective study aimed to assess the performance of tumor ghost on post-ablation contrast-enhanced MRI with excellular contrast agent gadolinium-DTPA in evaluating the ablative margin of hepatocellular carcinoma (HCC) after microwave ablation (MWA). METHOD 315 HCC lesions less than 5 cm in 287 patients completely treated by MWA were enrolled in the study. The tumor ghost was characterized as a lower signal intensity area than the surrounding tissues of the ablation zone on T1WI imaging. The ablation margin (AM) status was classified into AM0 (>5mm) and AM1 (<5mm) according to the minimum distance between the tumor ghost and ablated zone. Inter-observer agreement between two radiologists on the AM assessment was analyzed using the Cohen κ coefficient. Multivariate analysis using Cox proportional hazard model was performed to investigate independent risk factors for LTP. RESULTS 175 and 140 tumors were evaluated as AM0 and AM1 through tumor ghost. The inter-observer agreement level between two radiologists for assessment of AM was good (κ coefficient = 0.752, 95 % confidence interval: 0.679-0.825, p < 0.001). The mediate follow-up period was 32.2 months (range 3.0-60.8 months). The incidence of LTP in the AM0 lesions and AM1 lesions was 6.3 % (11/175) and 20.0 % (28/140), respectively. AM status was identified as an independent prognostic factor for LTP (HR 3.057, 95 % CI, 1.445-6.470, p = 0.003). CONCLUSIONS The assessment of the AM by tumor ghost on post-ablation MRI is an accurate and efficiently method for evaluating the completeness of microwave ablation for hepatocellular carcinoma.
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Stereotactic Microwave Ablation of Hepatocellular Carcinoma: The Impact of Tumor Size and Minimal Ablative Margin on Therapeutic Success. Tomography 2022; 9:50-59. [PMID: 36648992 PMCID: PMC9844395 DOI: 10.3390/tomography9010005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 12/19/2022] [Accepted: 12/23/2022] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Microwave ablation (MWA) has gained relevance in the treatment of hepatic malignancies and especially in hepatocellular carcinoma (HCC), and it is an important alternative to surgery. The purpose of the study was to evaluate whether the minimal ablative margin (MAM) or the initial tumor size has a greater effect on the success of stereotactic MWA of HCC regarding the time to local tumor progression (LTP) and overall survival (OS). METHODS 88 patients, who received stereotactic MWA of 127 tumor lesions with a curative intention were included in this single-center, retrospective study. The MAM was evaluated in a side-by-side comparison of pre- and post-ablative, contrast-enhanced slice imaging. A Cox proportional hazard model with a frailty term was computed to assess the influence of the MAM and the maximum tumor diameter on the time to LTP and the OS. RESULTS The maximum tumor diameter was identified as a significant positive predictor for LTP (hazard ratio 1.04, 95% CI 1.00-1.08, p = 0.03), but it was not a significant positive predictor for the OS (p = 0.20). The MAM did not have a significant influence on LTP-free survival (p = 0.23) and OS (p = 0.67). CONCLUSION For the successful stereotactic MWA of HCC, the MAM and maximum tumor diameter might not have an influence on the OS, but the maximum tumor diameter seems to be an independent predictor of the time to LTP.
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Alpers J, Rötzer M, Gutberlet M, Wacker F, Hensen B, Hansen C. Adaptive simulation of 3D thermometry maps for interventional MR-guided tumor ablation using Pennes' bioheat equation and isotherms. Sci Rep 2022; 12:20356. [PMID: 36437405 PMCID: PMC9701800 DOI: 10.1038/s41598-022-24911-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 11/22/2022] [Indexed: 11/28/2022] Open
Abstract
Minimally-invasive thermal ablation procedures have become clinically accepted treatment options for tumors and metastases. Continuous and reliable monitoring of volumetric heat distribution promises to be an important condition for successful outcomes. In this work, an adaptive bioheat transfer simulation of 3D thermometry maps is presented. Pennes' equation model is updated according to temperature maps generated by uniformly distributed 2D MR phase images rotated around the main axis of the applicator. The volumetric heat diffusion and the resulting shape of the ablation zone can be modelled accurately without introducing a specific heat source term. Filtering the temperature maps by extracting isotherms reduces artefacts and noise, compresses information of the measured data and adds physical a priori knowledge. The inverse heat transfer for estimating values of the simulated tissue and heating parameters is done by reducing the sum squared error between these isotherms and the 3D simulation. The approach is evaluated on data sets consisting of 13 ex vivo bio protein phantoms, including six perfusion phantoms with simulated heat sink effects. Results show an overall average Dice score of 0.89 ± 0.04 (SEM < 0.01). The optimization of the parameters takes 1.05 ± 0.26 s for each acquired image. Future steps should consider the local optimization of the simulation parameters instead of a global one to better detect heat sinks without a priori knowledge. In addition, the use of a proper Kalman filter might increase robustness and accuracy if combined with our method.
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Affiliation(s)
- Julian Alpers
- grid.5807.a0000 0001 1018 4307Otto-von-Guericke University, Faculty of Computer Science, Magdeburg, 39106 Germany ,grid.5807.a0000 0001 1018 4307Otto-von-Guericke University, Research Campus STIMULATE, Magdeburg, 39106 Germany
| | - Maximilian Rötzer
- grid.5807.a0000 0001 1018 4307Otto-von-Guericke University, Faculty of Computer Science, Magdeburg, 39106 Germany ,grid.5807.a0000 0001 1018 4307Otto-von-Guericke University, Research Campus STIMULATE, Magdeburg, 39106 Germany
| | - Marcel Gutberlet
- grid.10423.340000 0000 9529 9877Hannover Medical School, Institute for Diagnostic and Interventional Radiology, Hannover, 30625 Germany ,grid.5807.a0000 0001 1018 4307Otto-von-Guericke University, Research Campus STIMULATE, Magdeburg, 39106 Germany
| | - Frank Wacker
- grid.10423.340000 0000 9529 9877Hannover Medical School, Institute for Diagnostic and Interventional Radiology, Hannover, 30625 Germany ,grid.5807.a0000 0001 1018 4307Otto-von-Guericke University, Research Campus STIMULATE, Magdeburg, 39106 Germany
| | - Bennet Hensen
- grid.10423.340000 0000 9529 9877Hannover Medical School, Institute for Diagnostic and Interventional Radiology, Hannover, 30625 Germany ,grid.5807.a0000 0001 1018 4307Otto-von-Guericke University, Research Campus STIMULATE, Magdeburg, 39106 Germany
| | - Christian Hansen
- grid.5807.a0000 0001 1018 4307Otto-von-Guericke University, Faculty of Computer Science, Magdeburg, 39106 Germany ,grid.5807.a0000 0001 1018 4307Otto-von-Guericke University, Research Campus STIMULATE, Magdeburg, 39106 Germany
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Wu S, Li Z, Yao C, Dong S, Gao J, Ke S, Zhu R, Huang S, Wang S, Xu L, Ye C, Kong J, Sun W. Progression of hepatocellular carcinoma after radiofrequency ablation: Current status of research. Front Oncol 2022; 12:1032746. [PMID: 36483051 PMCID: PMC9723167 DOI: 10.3389/fonc.2022.1032746] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 11/04/2022] [Indexed: 05/27/2024] Open
Abstract
Hepatocellular carcinoma (HCC) remains an important disease for health care systems in view of its high morbidity, mortality, and increasing incidence worldwide. Radiofrequency ablation (RFA) is preferred to surgery as a local treatment for HCC because it is safer, less traumatic, less painful, better tolerated, causes fewer adverse reactions, and allows more rapid postoperative recovery. The biggest shortcoming of RFA when used to treat HCC is the high incidence of residual tumor, which is often attributed to the vascular thermal deposition effect, the wide infiltration zone of peripheral venules, and the distance between satellite foci and the main focus of the cancer. Recurrence and progression of the residual tumor is the most important determinant of the prognosis. Therefore, it is important to be aware of the risk of recurrence and to improve the efficacy of RFA. This review summarizes the relevant literature and the possible mechanisms involved in progression of HCC after RFA. Current studies have demonstrated that multimodal treatments which RFA combined with other anti-cancer approaches can prevent progression of HCC after RFA.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Jian Kong
- Department of Hepatobiliary Surgery, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing, China
| | - Wenbing Sun
- Department of Hepatobiliary Surgery, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing, China
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26
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Zhang X, Wang C, Zheng D, Liao Y, Wang X, Huang Z, Zhong Q. Radiomics nomogram based on multi-parametric magnetic resonance imaging for predicting early recurrence in small hepatocellular carcinoma after radiofrequency ablation. Front Oncol 2022; 12:1013770. [PMID: 36439458 PMCID: PMC9686343 DOI: 10.3389/fonc.2022.1013770] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 10/24/2022] [Indexed: 08/10/2023] Open
Abstract
BACKGROUND There are few studies on the application of radiomics in the risk prediction of early recurrence (ER) after radiofrequency ablation (RFA). This study evaluated the value of a multi-parametric magnetic resonance imaging (MRI, mpMRI)-based radiomics nomogram in predicting ER of small hepatocellular carcinoma (HCC) after RFA. MATERIALS AND METHODS A retrospective analysis was performed on 90 patients with small HCC who were treated with RFA. Patients were divided into two groups according to recurrence within 2 years: the ER group (n=38) and the non-ER group (n=52). Preoperative T1WI, T2WI, and contrast-enhanced MRI (CE-MRI) were used for radiomic analysis. Tumor segmentation was performed on the images and applied to extract 1316 radiomics features. The most predictive features were selected using analysis of variance + Mann-Whitney, Spearman's rank correlation test, random forest (importance), and least absolute shrinkage and selection operator analysis. Radiomics models based on each sequence or combined sequences were established using logistic regression analysis. A predictive nomogram was constructed based on the radiomics score (rad-score) and clinical predictors. The predictive efficiency of the nomogram was evaluated using the area under the receiver operating characteristic curve (AUC). Decision curve analysis (DCA) was used to evaluate the clinical efficacy of the nomogram. RESULTS The radiomics model mpMRI, which is based on T1WI, T2WI, and CE-MRI sequences, showed the best predictive performance, with an AUC of 0.812 for the validation cohort. Combined with the clinical risk factors of albumin level, number of tumors, and rad-score of mpMRI, the AUC of the preoperative predictive nomogram in the training and validation cohorts were 0.869 and 0.812, respectively. DCA demonstrated that the combined nomogram is clinically useful. CONCLUSIONS The multi-parametric MRI-based radiomics nomogram has a high predictive value for ER of small HCC after RFA, which could be helpful for personalized risk stratification and further treatment decision-making for patients with small HCC.
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Affiliation(s)
- Xiaojuan Zhang
- Department of Radiology, Fujian Medical University Xiamen Humanity Hospital, Xiamen, China
- Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Chuandong Wang
- Department of Thyroid and Breast Surgery, Fujian Medical University Xiamen Humanity Hospital, Xiamen, China
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Dan Zheng
- Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, China
- Department of Radiology, 900th Hospital of Joint Logistics Support Force, Fuzhou, China
| | - Yuting Liao
- Institute of Precision Medicine, GE Healthcare, Shanghai, China
| | - Xiaoyang Wang
- Department of Radiology, 900th Hospital of Joint Logistics Support Force, Fuzhou, China
| | - Zhifeng Huang
- Department of Radiology, 900th Hospital of Joint Logistics Support Force, Fuzhou, China
| | - Qun Zhong
- Department of Radiology, The Affiliated People’s Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, China
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27
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Faber RA, Burghout KST, Bijlstra OD, Hendriks P, van Erp GCM, Broersen A, Dijkstra J, Vahrmeijer AL, Burgmans MC, Mieog JSD. Three-dimensional quantitative margin assessment in patients with colorectal liver metastases treated with percutaneous thermal ablation using semi-automatic rigid MRI/CECT-CECT co-registration. Eur J Radiol 2022; 156:110552. [PMID: 36228455 DOI: 10.1016/j.ejrad.2022.110552] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 09/12/2022] [Accepted: 09/29/2022] [Indexed: 11/20/2022]
Abstract
PURPOSE To assess the quantitative minimal ablation margin (MAM) in patients with colorectal liver metastases (CRLM) treated with percutaneous thermal ablation (TA) and correlate the quantitative MAM with local tumour recurrence (LTR). METHOD Thirty-nine of 143 patients with solitary or multiple CRLM who underwent a first percutaneous TA procedure between January 2011 and May 2020 were considered eligible for study enrolment. Image fusion of pre- and post-ablation scans and 3D quantitative MAM assessment was performed using the in-house developed semi-automatic rigid MRI/CECT-CECT co-registration software deLIVERed. The quantitative MAM was analysed and correlated with LTR. RESULTS Eighteen (46 %) patients were additionally excluded from further analyses due to suboptimal co-registration (quality co-registration score ≤ 3). The quality of co-registration was considered sufficient in 21 (54 %) patients with a total of 29 CRLM. LTR was found in 5 of 29 (17 %) TA-treated CRLM. In total, 12 (41 %) negative MAMs were measured (mean MAM -4.7 ± 2.7 mm). Negative MAMs were significantly more frequently seen in patients who developed LTR (100 %) compared to those without LTR (29 %; p = 0.003). The median MAM of patients who developed LTR (-6.6 mm (IQR -9.5 to -4.6)) was significantly smaller compared to the median MAM of patients without LTR (0.5 mm (IQR -1.8 to 3.0); p < 0.001). The ROC curve showed high accuracy in predicting LTR for the quantitative MAM (area under the curve of 0.975 ± 0.029). CONCLUSION This study demonstrated the feasibility of 3D quantitative MAM assessment, using deLIVERed co-registration software, to assess technical success of TA in patients with CRLM and to predict LTR.
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Affiliation(s)
- Robin A Faber
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Kimberly S T Burghout
- Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Okker D Bijlstra
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Pim Hendriks
- Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Gonnie C M van Erp
- Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Alexander Broersen
- Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Jouke Dijkstra
- Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Alexander L Vahrmeijer
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - Mark C Burgmans
- Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - J Sven D Mieog
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, the Netherlands.
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Kern AL, Gutberlet M, Rumpel R, Bruesch I, Hohlfeld JM, Wacker F, Hensen B. Absolute thermometry using hyperpolarized 129 Xe free-induction decay and spin-echo chemical-shift imaging in rats. Magn Reson Med 2022; 89:54-63. [PMID: 36121206 DOI: 10.1002/mrm.29455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 07/21/2022] [Accepted: 08/22/2022] [Indexed: 11/12/2022]
Abstract
PURPOSE To implement and test variants of chemical shift imaging (CSI) acquiring both free induction decays (FIDs) showing all dissolved-phase compartments and spin echoes for specifically assessing 129 $$ {}^{129} $$ Xe in lipids in order to perform precise lipid-dissolved 129 $$ {}^{129} $$ Xe MR thermometry in a rat model of general hypothermia. METHODS Imaging was performed at 2.89 T. T 2 $$ {T}_2 $$ of 129 $$ {}^{129} $$ Xe in lipids was determined in one rat by fitting exponentials to decaying signals of global spin-echo spectra. Four rats (conventional CSI) and six rats (turbo spectroscopic imaging) were scanned at three time points with core body temperature 37/34/37 ∘ $$ {}^{\circ } $$ C. Lorentzian functions were fit to spectra from regions of interest to determine the water-referenced chemical shift of lipid-dissolved 129 $$ {}^{129} $$ Xe in the abdomen. Absolute 129 $$ {}^{129} $$ Xe-derived temperature was compared to values from a rectal probe. RESULTS Global T 2 $$ {T}_2 $$ of 129 $$ {}^{129} $$ Xe in lipids was determined as 251 . 3 ms ± 81 . 4 ms $$ 251.3\;\mathrm{ms}\pm 81.4\;\mathrm{ms} $$ . Friedman tests showed significant changes of chemical shift with time for both sequence variants and both FID and spin-echo acquisitions. Mean and SD of 129 $$ {}^{129} $$ Xe and rectal probe temperature differences were found to be - 0 . 1 5 ∘ C ± 0 . 9 3 ∘ C $$ -0.1{5}^{\circ}\mathrm{C}\pm 0.9{3}^{\circ}\mathrm{C} $$ (FID) and - 0 . 3 8 ∘ C ± 0 . 6 4 ∘ C $$ -0.3{8}^{\circ}\mathrm{C}\pm 0.6{4}^{\circ}\mathrm{C} $$ (spin echo) for conventional CSI as well as 0 . 0 3 ∘ C ± 0 . 7 7 ∘ C $$ 0.0{3}^{\circ}\mathrm{C}\pm 0.7{7}^{\circ}\mathrm{C} $$ (FID) and - 0 . 0 6 ∘ C ± 0 . 7 6 ∘ C $$ -0.0{6}^{\circ}\mathrm{C}\pm 0.7{6}^{\circ}\mathrm{C} $$ (spin echo) for turbo spectroscopic imaging. CONCLUSION 129 $$ {}^{129} $$ Xe MRI using conventional CSI and turbo spectroscopic imaging of lipid-dissolved 129 $$ {}^{129} $$ Xe enables precise temperature measurements in the rat's abdomen using both FID and spin-echo acquisitions with acquisition of spin echoes enabling most precise temperature measurements.
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Affiliation(s)
- Agilo L Kern
- Institute for Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany.,Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), German Center for Lung Research, Hannover, Germany
| | - Marcel Gutberlet
- Institute for Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany.,Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), German Center for Lung Research, Hannover, Germany
| | - Regina Rumpel
- Institute for Laboratory Animal Science and Central Animal Facility, Hannover Medical School, Hannover, Germany
| | - Inga Bruesch
- Institute for Laboratory Animal Science and Central Animal Facility, Hannover Medical School, Hannover, Germany
| | - Jens M Hohlfeld
- Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), German Center for Lung Research, Hannover, Germany.,Clinical Airway Research, Fraunhofer Institute for Toxicology and Experimental Medicine, Hannover, Germany.,Department of Respiratory Medicine, Hannover Medical School, Hannover, Germany
| | - Frank Wacker
- Institute for Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany.,Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), German Center for Lung Research, Hannover, Germany
| | - Bennet Hensen
- Institute for Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany
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29
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Ni Z, Wu B, Li M, Han X, Hao X, Zhang Y, Cheng W, Guo C. Prediction Model and Nomogram of Early Recurrence of Hepatocellular Carcinoma after Radiofrequency Ablation Based on Logistic Regression Analysis. ULTRASOUND IN MEDICINE & BIOLOGY 2022; 48:1733-1744. [PMID: 35690523 DOI: 10.1016/j.ultrasmedbio.2022.04.217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 03/19/2022] [Accepted: 04/27/2022] [Indexed: 06/15/2023]
Abstract
The purpose of this study was to screen for high-risk factors leading to the early recurrence of hepatocellular carcinoma (HCC) after radiofrequency ablation (RFA) and to construct a prediction model and nomogram. This retrospective study included 108 patients with primary HCC who underwent RFA treatment at the Harbin Medical University Cancer Hospital between January 2018 and June 2019. Four risk factors were screened for using univariate and multivariate logistic regression analyses: number of tumors (hazard ratio [HR] = 14.684, 95% confidence interval [CI]: 1.099-196.215, p = 0.042), neutrophil-to-lymphocyte ratio (NLR) (HR = 2.178, 95% CI: 1.003-4.730, p = 0.049), contrast-enhanced ultrasound (CEUS) performance (HR = 6.482, 95% CI: 1.161-36.184, p = 0.033) and α-fetoprotein (AFP) level (HR = 1.001, 95% CI: 1.000-1.003, p = 0.040). We established a prediction model: Logit(p) = -3.096 + 2.827 × (number of tumors >1 = 1) + 1.851 × (CEUS revealing rapid enhancement of blood flow signal in the arterial phase and clearance in the portal phase = 1) + 1.941 × (NLR >1.55 = 1) + 0.257 × (AFP >32.545 = 1). Through clinical decision curve analysis, the model's threshold was 0.043-0.873, indicating a high clinical value. Patients with a high AFP level, typical CEUS enhancement pattern, multiple tumors and elevated NLR are more likely to relapse early.
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Affiliation(s)
- ZiHao Ni
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, China
| | - BoLin Wu
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, China
| | - Meng Li
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, China
| | - Xue Han
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, China
| | - XiaoWen Hao
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, China
| | - Yue Zhang
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, China
| | - Wen Cheng
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, China
| | - CunLi Guo
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, China.
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Deng Q, He M, Fu C, Feng K, Ma K, Zhang L. Radiofrequency ablation in the treatment of hepatocellular carcinoma. Int J Hyperthermia 2022; 39:1052-1063. [PMID: 35944905 DOI: 10.1080/02656736.2022.2059581] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE The purpose of this article is to discuss the use, comparative efficacy, and research progress of radiofrequency ablation (RFA), alone or in combination with other therapies, for the treatment of hepatocellular carcinoma (HCC). METHOD To search and summarize the basic and clinical studies of RFA in recent years. RESULTS RFA is one of the radical treatment methods listed in the guidelines for the diagnosis and treatment of HCC. It has the characteristics of being minimally invasive and safe and can obtain good local tumor control, and it can improve the local immune ability, improve the tumor microenvironment and enhance the efficacy of chemotherapy drugs. It is commonly used for HCC treatment before liver transplantation and combined ALPPS and hepatectomy for HCC. In addition, the technology of RFA is constantly developing. The birth of noninvasive, no-touch RFA technology and equipment and the precise RFA concept have improved the therapeutic effect of RFA. CONCLUSION RFA has good local tumor control ability, is minimally invasive, is safe and has other beneficial characteristics. It plays an increasingly important role in the comprehensive treatment strategy of HCC. Whether RFA alone or combined with other technologies expands the surgical indications of patients with HCC and provides more benefits for HCC patients needs to be determined.
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Affiliation(s)
- Qingsong Deng
- Army Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Minglian He
- Department of Neurosurgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Chunchuan Fu
- Department of Hepatobiliary Surgery, Xuanhan County People's Hospital, Xuanhan, China
| | - Kai Feng
- Army Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Kuansheng Ma
- Army Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Leida Zhang
- Army Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
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Alpers J, Hensen B, Rötzer M, Reimert DL, Gerlach T, Vick R, Gutberlet M, Wacker F, Hansen C. Comparison study of reconstruction algorithms for volumetric necrosis maps from 2D multi-slice GRE thermometry images. Sci Rep 2022; 12:11509. [PMID: 35799055 PMCID: PMC9263155 DOI: 10.1038/s41598-022-15712-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 06/28/2022] [Indexed: 12/24/2022] Open
Abstract
Cancer is a disease which requires a significant amount of careful medical attention. For minimally-invasive thermal ablation procedures, the monitoring of heat distribution is one of the biggest challenges. In this work, three approaches for volumetric heat map reconstruction (Delauney triangulation, minimum volume enclosing ellipsoids (MVEE) and splines) are presented based on uniformly distributed 2D MRI phase images rotated around the applicator’s main axis. We compare them with our previous temperature interpolation method with respect to accuracy, robustness and adaptability. All approaches are evaluated during MWA treatment on the same data sets consisting of 13 ex vivo bio protein phantoms, including six phantoms with simulated heat sink effects. Regarding accuracy, the DSC similarity results show a strong trend towards the MVEE (\documentclass[12pt]{minimal}
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\begin{document}$$0.80\pm 0.03$$\end{document}0.80±0.03) and the splines (\documentclass[12pt]{minimal}
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\begin{document}$$0.77\pm 0.04$$\end{document}0.77±0.04) method compared to the Delauney triangulation (\documentclass[12pt]{minimal}
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\begin{document}$$0.75\pm 0.02$$\end{document}0.75±0.02) or the temperature interpolation (\documentclass[12pt]{minimal}
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\begin{document}$$0.73\pm 0.07$$\end{document}0.73±0.07). Robustness is increased for all three approaches and the adaptability shows a significant trend towards the initial interpolation method and the splines. To overcome local inhomogeneities in the acquired data, the use of adaptive simulations should be considered in the future. In addition, the transfer to in vivo animal experiments should be considered to test for clinical applicability.
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Affiliation(s)
- Julian Alpers
- Faculty of Computer Science, Otto-von-Guericke University, 39106, Magdeburg, Germany. .,Research Campus STIMULATE, Otto-von-Guericke University, 39106, Magdeburg, Germany.
| | - Bennet Hensen
- Institute for Diagnostic and Interventional Radiology, Hannover Medical School, 30625, Hannover, Germany.,Research Campus STIMULATE, Otto-von-Guericke University, 39106, Magdeburg, Germany
| | - Maximilian Rötzer
- Faculty of Computer Science, Otto-von-Guericke University, 39106, Magdeburg, Germany.,Research Campus STIMULATE, Otto-von-Guericke University, 39106, Magdeburg, Germany
| | - Daniel L Reimert
- Institute for Diagnostic and Interventional Radiology, Hannover Medical School, 30625, Hannover, Germany.,Research Campus STIMULATE, Otto-von-Guericke University, 39106, Magdeburg, Germany
| | - Thomas Gerlach
- Faculty of Electrical Engineering and Information Technologies, Otto-von-Guericke University, 39106, Magdeburg, Germany.,Research Campus STIMULATE, Otto-von-Guericke University, 39106, Magdeburg, Germany
| | - Ralf Vick
- Faculty of Electrical Engineering and Information Technologies, Otto-von-Guericke University, 39106, Magdeburg, Germany.,Research Campus STIMULATE, Otto-von-Guericke University, 39106, Magdeburg, Germany
| | - Marcel Gutberlet
- Institute for Diagnostic and Interventional Radiology, Hannover Medical School, 30625, Hannover, Germany.,Research Campus STIMULATE, Otto-von-Guericke University, 39106, Magdeburg, Germany
| | - Frank Wacker
- Institute for Diagnostic and Interventional Radiology, Hannover Medical School, 30625, Hannover, Germany.,Research Campus STIMULATE, Otto-von-Guericke University, 39106, Magdeburg, Germany
| | - Christian Hansen
- Faculty of Computer Science, Otto-von-Guericke University, 39106, Magdeburg, Germany.,Research Campus STIMULATE, Otto-von-Guericke University, 39106, Magdeburg, Germany
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Hensen B, Drenkmann U, Frericks B, Rothgang E, Gutberlet M, Länger F, Gilson W, Valdeig S, Weiss CR, Wacker F. Detection of Ablation Boundaries Using Different MR Sequences in a Swine Liver Model. Cardiovasc Intervent Radiol 2022; 45:1010-1018. [PMID: 35449314 PMCID: PMC9226104 DOI: 10.1007/s00270-022-03143-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 03/29/2022] [Indexed: 11/23/2022]
Abstract
PURPOSE To determine the magnetic resonance (MR) sequences best suited for the assessment of ablation zones after radiofrequency ablation (RFA). METHODS Three percutaneous MR-guided RFA of the liver were performed on three swine. Four pre-contrast and two hepatobiliary post-contrast sequences were obtained after ablation. Tissue samples were extracted and stained for nicotinamide adenine dinucleotide diaphorase hydride (NADH) and with hematoxylin and eosin. Post-ablation MR images and NADH slides were segmented to determine the total ablation zone, their Dice similarity coefficient (DSC), and the contrast-to-noise ratio (CNR) of the visible ablation boundary to normal liver tissue. RESULTS Two distinct layers were combined to determine the ablation zone: an inner layer of coagulation necrosis and an outer layer defined as the peripheral transition zone. Corresponding zones could be found in the MR images as well. Compared to histology, the total area of the MR ablation zone was significantly smaller on the pre-contrast T1 images (p < 0.01) and significantly larger with T2 turbo spin-echo (p = 0.025). No significant difference in size of the ablation zone depiction could be found between histology, post-contrast T1 volumetric interpolated breath-hold examination (VIBE), and post-contrast T1 3D Turboflash (TFL) as well as T2 SPACE images. All sequences but the pre-contrast T1 VIBE sequence showed a DSC above 80% and a high CNR. CONCLUSIONS Post-contrast T1 3DTFL performs best when assessing ablation zones after RFA. Since the sequence requires a long acquisition time, T1 VIBE post-contrast offers the best compromise between acquisition time and estimation accuracy.
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Affiliation(s)
- Bennet Hensen
- Diagnostic and Interventional Radiology, Hannover Medical School, Hanover, Germany.
- STIMULATE-Solution Centre for Image Guided Local Therapies, Magdeburg, Germany.
| | - Urte Drenkmann
- STIMULATE-Solution Centre for Image Guided Local Therapies, Magdeburg, Germany
| | - Bernd Frericks
- Diagnostic and Interventional Radiology, DRK Kliniken Westend, Berlin, Germany
| | - Eva Rothgang
- Industrial Engineering, Ostbayerische Technische Hochschule Amberg-Weiden, Weiden, Germany
| | - Marcel Gutberlet
- Diagnostic and Interventional Radiology, Hannover Medical School, Hanover, Germany
| | - Florian Länger
- Department of Pathology, Hannover Medical School, Hanover, Germany
| | - Wesley Gilson
- Center for Applied Medical Imaging, Siemens Corporate Research, Baltimore, MD, USA
| | - Steffi Valdeig
- Division of Vascular and Interventional Radiology, Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University, Baltimore, MD, USA
| | - Clifford R Weiss
- Division of Vascular and Interventional Radiology, Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University, Baltimore, MD, USA
- The Johns Hopkins Center for Bioengineering Innovation and Design (CBID), Johns Hopkins University, Baltimore, MD, USA
| | - Frank Wacker
- Diagnostic and Interventional Radiology, Hannover Medical School, Hanover, Germany
- STIMULATE-Solution Centre for Image Guided Local Therapies, Magdeburg, Germany
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Audigier C, Mohaiu AT, Alzaga A, Bale R, Mansi T. A comparative study on computational models of multi-electrode radiofrequency ablation of large liver tumors. Int J Comput Assist Radiol Surg 2022; 17:1489-1496. [PMID: 35776400 DOI: 10.1007/s11548-022-02689-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 05/24/2022] [Indexed: 11/30/2022]
Abstract
PURPOSE Thermal ablation of liver tumors has emerged as a first-line curative treatment for single small tumors (diameter < 2.5 cm) due to similar overall survival rates as surgical resection. Moreover, it is far less invasive, has lower complication rates, a superior cost-effectiveness, and an extremely low treatment-associated mortality. However, in many cases, complete tumor coverage cannot be achieved only with a single electrode and several electrodes are used to create overlapping ablations. Multi-electrode planning is a challenging 3D task with many contradictive constraints to consider, a dimensionality difficult to assess even for experts. It requires extremely long planning time since it is mostly performed mentally by clinicians looking at 2D CT views. An accurate and reliable prediction of the ablation zone would help to turn thermal ablation into a first-line curative treatment also for large liver tumors treated with multiple electrodes. In order to determine the level of model simplification that can be acceptable, we compared three computational models, a simple spherical model, a biophysics-based model and an Eikonal model. METHODS RF ablation electrodes were virtually placed at a desired position in the patient pre-operative CT image and the models predicted the ablation zone generated by multiple electrodes. The last two models are patient-specific. In these cases, hepatic structures were automatically segmented from the pre-operative CT images to predict a patient-specific ablation zone. RESULTS The three models were used to simulate multiple electrode ablations on 12 large tumors from 11 patients for which the procedure information was available. Biophysics-based simulations approximate better the post-operative ablation zone in term of Hausdorff distance, Dice Similarity Coefficient, radius, and volume compared to two other methods. It also predicts better the coverage percentage and thus the tumor ablation margin. CONCLUSION The results obtained with the biophysics-based model indicate that it could improve ablation planning by accurately predicting the ablation zone, avoiding over or under-treatment. This is particularly beneficial for multi-electrode radiofrequency ablation of larger liver tumors where the planning phase is particularly challenging.
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Affiliation(s)
- Chloé Audigier
- Advanced Clinical Imaging Technology, Siemens Healthcare, Lausanne, Switzerland.
| | | | | | - Reto Bale
- Innsbruck University Hospital, Innsbruck, Austria
| | - Tommaso Mansi
- Siemens Healthineers, Digital Technology and Innovation, Princeton, NJ, USA
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Comparison of a Robotic and Patient-Mounted Device for CT-Guided Needle Placement: A Phantom Study. J Clin Med 2022; 11:jcm11133746. [PMID: 35807029 PMCID: PMC9267795 DOI: 10.3390/jcm11133746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 06/21/2022] [Accepted: 06/25/2022] [Indexed: 11/17/2022] Open
Abstract
Background: Robotic-based guidance systems are becoming increasingly capable of assisting in needle placement during interventional procedures. Despite these technical advances, less sophisticated low-cost guidance devices promise to enhance puncture accuracy compared with the traditional freehand technique. Purpose: To compare the in vitro accuracy and feasibility of two different aiming devices for computed-tomography (CT)-guided punctures. Methods: A total of 560 CT-guided punctures were performed by using either a robotic (Perfint Healthcare: Maxio) or a novel low-cost patient-mounted system (Medical Templates AG: Puncture Cube System [PCS]) for the placement of Kirschner wires in a plexiglass phantom with different slice thicknesses. Needle placement accuracy as well as procedural time were assessed. The Euclidean (ED) and normal distances (ND) were calculated at the entry and target point. Results: Using the robotic device, the ND at the target for 1.25 mm, 2.5 mm, 3.75 mm and 5 mm slice thickness were 1.28 mm (SD ± 0.79), 1.25 mm (SD ± 0.81), 1.35 mm (SD ± 1.00) and 1.35 mm (SD ± 1.03). Using the PCS, the ND at the target for 1 mm, 3 mm and 5 mm slices were 3.84 mm (SD ± 1.75), 4.41 mm (SD ± 2.31) and 4.41 mm (SD ± 2.11), respectively. With all comparable slice thicknesses, the robotic device was significantly more accurate compared to the low-cost device (p < 0.001). Needle placement with the PCS resulted in lower intervention time (mean, 158.83 s [SD ± 23.38] vs. 225.67 s [SD ± 17.2]). Conclusion: Although the robotic device provided more accurate results, both guidance systems showed acceptable results and may be helpful for interventions in difficult anatomical regions and for those requiring complex multi-angle trajectories.
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Johnston EW, Basso J, Winfield J, McCall J, Khan N, Messiou C, Koh DM, Fotiadis N. Starting CT-guided robotic interventional oncology at a UK centre. Br J Radiol 2022; 95:20220217. [PMID: 35290098 PMCID: PMC10996412 DOI: 10.1259/bjr.20220217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/01/2022] [Accepted: 03/07/2022] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE A commercially available CT-guided robot offers enhanced abilities in planning, targeting, and confirming accurate needle placement. In this short communication, we describe our first UK experience of robotic interventional oncology procedures. METHODS We describe the device, discuss installation, operation, and report upon needle insertion success, accuracy (path deviation; PD and tip deviation; TD), number of adjustments, complications, and procedural success. RESULTS Nine patients (seven males), median age 66 years (range 43-79) were consented for biopsy or ablation between March and April 2021. Needle placement in biopsy was more accurate than ablation (median 1 vs 11 mm PD and 1 vs 20 mm TD) and required fewer adjustments (median 0 vs 5). No complications arose, and all procedures were successful (diagnostic material obtained or complete ablation at follow-up). CONCLUSION Short procedure times and very high levels of accuracy were readily achieved with biopsy procedures, although tumour ablation was less accurate which likely reflects higher procedural complexity. ADVANCES IN KNOWLEDGE Achieving highly accurate robotic biopsy with is feasible within a very short time span. Further work is required to maximise the potential of robotic guidance in tumour ablation procedures, which is likely due to higher complexity giving a longer learning curve.
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Improved Outcomes of Thermal Ablation for Colorectal Liver Metastases: A 10-Year Analysis from the Prospective Amsterdam CORE Registry (AmCORE). Cardiovasc Intervent Radiol 2022; 45:1074-1089. [PMID: 35585138 PMCID: PMC9307533 DOI: 10.1007/s00270-022-03152-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 04/09/2022] [Indexed: 02/06/2023]
Abstract
Background To analyze long-term oncological outcomes of open and percutaneous thermal ablation in the treatment of patients with colorectal liver metastases (CRLM). Methods This assessment from a prospective, longitudinal tumor registry included 329 patients who underwent 541 procedures for 1350 CRLM from January 2010 to February 2021. Three cohorts were formed: 2010–2013 (129 procedures [53 percutaneous]), 2014–2017 (206 procedures [121 percutaneous]) and 2018–2021 (206 procedures [135 percutaneous]). Local tumor progression-free survival (LTPFS) and overall survival (OS) data were estimated using the Kaplan–Meier method. Potential confounding factors were analyzed with uni- and multivariable Cox regression analyses. Results LTPFS improved significantly over time for percutaneous ablations (2-year LTPFS 37.7% vs. 69.0% vs. 86.3%, respectively, P < .0001), while LTPFS for open ablations remained reasonably stable (2-year LTPFS 87.1% [2010–2013], vs. 92.7% [2014–2017] vs. 90.2% [2018–2021], P = .12). In the latter cohort (2018–2021), the open approach was no longer superior regarding LTPFS (P = .125). No differences between the three cohorts were found regarding OS (P = .088), length of hospital stay (open approach, P = .065; percutaneous approach, P = .054), and rate and severity of complications (P = .404). The rate and severity of complications favored the percutaneous approach in all three cohorts (P = .002). Conclusion Over the last 10 years efficacy of percutaneous ablations has improved remarkably for the treatment of CRLM. Oncological outcomes seem to have reached results following open ablation. Given its minimal invasive character and shorter length of hospital stay, whenever feasible, percutaneous procedures may be favored over an open approach. Supplementary Information The online version contains supplementary material available at 10.1007/s00270-022-03152-9.
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Granata V, Fusco R, De Muzio F, Cutolo C, Setola SV, Simonetti I, Dell’Aversana F, Grassi F, Bruno F, Belli A, Patrone R, Pilone V, Petrillo A, Izzo F. Complications Risk Assessment and Imaging Findings of Thermal Ablation Treatment in Liver Cancers: What the Radiologist Should Expect. J Clin Med 2022; 11:jcm11102766. [PMID: 35628893 PMCID: PMC9147303 DOI: 10.3390/jcm11102766] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 05/10/2022] [Accepted: 05/12/2022] [Indexed: 02/04/2023] Open
Abstract
One of the major fields of application of ablation treatment is liver tumors. With respect to HCC, ablation treatments are considered as upfront treatments in patients with early-stage disease, while in colorectal liver metastases (CLM), they can be employed as an upfront treatment or in association with surgical resection. The main prognostic feature of ablation is the tumor size, since the goal of the treatment is the necrosis of all viable tumor tissue with an adequate tumor-free margin. Radiofrequency ablation (RFA) and microwave ablation (MWA) are the most employed ablation techniques. Ablation therapies in HCC and liver metastases have presented a challenge to radiologists, who need to assess response to determine complication-related treatment. Complications, defined as any unexpected variation from a procedural course, and adverse events, defined as any actual or potential injury related to the treatment, could occur either during the procedure or afterwards. To date, RFA and MWA have shown no statistically significant differences in mortality rates or major or minor complications. To reduce the rate of major complications, patient selection and risk assessment are essential. To determine the right cost-benefit ratio for the ablation method to be used, it is necessary to identify patients at high risk of infections, coagulation disorders and previous abdominal surgery interventions. Based on risk assessment, during the procedure as part of surveillance, the radiologists should pay attention to several complications, such as vascular, biliary, mechanical and infectious. Multiphase CT is an imaging tool chosen in emergency settings. The radiologist should report technical success, treatment efficacy, and complications. The complications should be assessed according to well-defined classification systems, and these complications should be categorized consistently according to severity and time of occurrence.
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Affiliation(s)
- Vincenza Granata
- Radiology Division, Istituto Nazionale Tumori—IRCCS—Fondazione G. Pascale, Via Mariano Semmola, 80131 Naples, Italy; (S.V.S.); (I.S.); (A.P.)
- Correspondence:
| | - Roberta Fusco
- Medical Oncology Division, Igea SpA, 80013 Naples, Italy;
| | - Federica De Muzio
- Department of Medicine and Health Sciences V. Tiberio, University of Molise, 86100 Campobasso, Italy;
| | - Carmen Cutolo
- Department of Medicine, Surgery and Dentistry, University of Salerno, 84084 Fisciano, Italy; (C.C.); (V.P.)
| | - Sergio Venanzio Setola
- Radiology Division, Istituto Nazionale Tumori—IRCCS—Fondazione G. Pascale, Via Mariano Semmola, 80131 Naples, Italy; (S.V.S.); (I.S.); (A.P.)
| | - Igino Simonetti
- Radiology Division, Istituto Nazionale Tumori—IRCCS—Fondazione G. Pascale, Via Mariano Semmola, 80131 Naples, Italy; (S.V.S.); (I.S.); (A.P.)
| | - Federica Dell’Aversana
- Division of Radiology, Università degli Studi della Campania Luigi Vanvitelli, 80138 Naples, Italy; (F.D.); (F.G.)
| | - Francesca Grassi
- Division of Radiology, Università degli Studi della Campania Luigi Vanvitelli, 80138 Naples, Italy; (F.D.); (F.G.)
| | - Federico Bruno
- Italian Society of Medical and Interventional Radiology (SIRM), SIRM Foundation, 20122 Milan, Italy;
- Department of Applied Clinical Sciences and Biotechnology, University of L’Aquila, 67100 L’Aquila, Italy
| | - Andrea Belli
- Hepatobiliary Surgical Oncology Division, Istituto Nazionale Tumori—IRCCS—Fondazione G. Pascale, Via Mariano Semmola, 80131 Naples, Italy; (A.B.); (R.P.); (F.I.)
| | - Renato Patrone
- Hepatobiliary Surgical Oncology Division, Istituto Nazionale Tumori—IRCCS—Fondazione G. Pascale, Via Mariano Semmola, 80131 Naples, Italy; (A.B.); (R.P.); (F.I.)
| | - Vincenzo Pilone
- Department of Medicine, Surgery and Dentistry, University of Salerno, 84084 Fisciano, Italy; (C.C.); (V.P.)
| | - Antonella Petrillo
- Radiology Division, Istituto Nazionale Tumori—IRCCS—Fondazione G. Pascale, Via Mariano Semmola, 80131 Naples, Italy; (S.V.S.); (I.S.); (A.P.)
| | - Francesco Izzo
- Hepatobiliary Surgical Oncology Division, Istituto Nazionale Tumori—IRCCS—Fondazione G. Pascale, Via Mariano Semmola, 80131 Naples, Italy; (A.B.); (R.P.); (F.I.)
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Lin YM, Bale R, Brock KK, Odisio BC. Contemporary evidence on colorectal liver metastases ablation: toward a paradigm shift in locoregional treatment. Int J Hyperthermia 2022; 39:649-663. [DOI: 10.1080/02656736.2021.1970245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Yuan-Mao Lin
- Department of Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Reto Bale
- Interventional Oncology-Microinvasive Therapy (SIP), Department of Radiology, Medical University Innsbruck, Innsbruck, Austria
| | - Kristy K. Brock
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Bruno C. Odisio
- Department of Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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Schullian P, Laimer G, Johnston E, Putzer D, Eberle G, Scharll Y, Widmann G, Kolbitsch C, Bale R. Technical efficacy and local recurrence after stereotactic radiofrequency ablation of 2653 liver tumors: a 15-year single-center experience with evaluation of prognostic factors. Int J Hyperthermia 2022; 39:421-430. [PMID: 35227136 DOI: 10.1080/02656736.2022.2044522] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
PURPOSE To assess the technical outcome and local tumor control of multi-probe stereotactic radiofrequency ablation (SRFA) in a large series of patients. Furthermore, to determine factors accounting for adverse outcomes. MATERIAL AND METHODS Between 2003 and 2018, 865 patients were treated by SRFA for 2653 primary and metastatic liver tumors with a median tumor size of 2.0 cm (0.5 - 19 cm). Primary technical efficacy (PTE) and local recurrence (LR) were evaluated, and possible predictors for adverse events analyzed using uni- and multi-variable binary logistic regression. RESULTS Overall, 2553 of 2653 tumors were successfully ablated at initial SRFA resulting in a PTE rate of 96.2%. Predictors of lower PTE rates were age > 70 years, tumor size > 5 cm, number of probes, location close to liver capsule/organs and segment II. LR occurred in 220 of 2653 tumors (8.3%) with the following predictors: age, tumor type/size, conglomerates, segments I/IVa/IVb, number of probes and location close to major vessels/bile duct. Multivariable analysis revealed tumor size > 5 cm (odds ratio [OR] 3.153), age > 70 years (OR 1.559), and location in segment II (OR 1.772) as independent prognostic factors for PTE, whereas tumor location close to major vessels (OR 1.653) and in segment IVb (OR 2.656) were identified as independent prognostic factors of LR. CONCLUSIONS Stereotactic RFA is an attractive option in the management of primary or metastatic liver tumors with good local tumor control, even in large tumors. The presented prognostic factors for adverse local oncological outcome might help to stratify unfavorable tumors for ablation.
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Affiliation(s)
- Peter Schullian
- Department of Radiology, Section of Interventional Oncology-Microinvasive Therapy (SIP), Medical University of Innsbruck, Innsbruck, Austria
| | - Gregor Laimer
- Department of Radiology, Section of Interventional Oncology-Microinvasive Therapy (SIP), Medical University of Innsbruck, Innsbruck, Austria
| | | | - Daniel Putzer
- Department of Radiology, Section of Interventional Oncology-Microinvasive Therapy (SIP), Medical University of Innsbruck, Innsbruck, Austria
| | - Gernot Eberle
- Department of Radiology, Section of Interventional Oncology-Microinvasive Therapy (SIP), Medical University of Innsbruck, Innsbruck, Austria
| | - Yannick Scharll
- Department of Radiology, Section of Interventional Oncology-Microinvasive Therapy (SIP), Medical University of Innsbruck, Innsbruck, Austria
| | - Gerlig Widmann
- Department of Radiology, Section of Interventional Oncology-Microinvasive Therapy (SIP), Medical University of Innsbruck, Innsbruck, Austria
| | - Christian Kolbitsch
- Department of Anesthesia, Medical University of Innsbruck, Innsbruck, Austria
| | - Reto Bale
- Department of Radiology, Section of Interventional Oncology-Microinvasive Therapy (SIP), Medical University of Innsbruck, Innsbruck, Austria
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Oosterveer TTM, van Erp GCM, Hendriks P, Broersen A, Overduin CG, van Rijswijk CSP, van Erkel AR, van der Meer RW, Tushuizen ME, Moelker A, Meijerink MR, van Delden OM, de Jong KP, van der Leij C, Smits MLJ, Urlings TAJ, Braak JPBM, Meershoek-Klein Kranenbarg E, van Duijn-de Vreugd B, Zeijdner E, Goeman JJ, Fütterer JJ, Coenraad MJ, Dijkstra J, Burgmans MC. Study Protocol PROMETHEUS: Prospective Multicenter Study to Evaluate the Correlation Between Safety Margin and Local Recurrence After Thermal Ablation Using Image Co-registration in Patients with Hepatocellular Carcinoma. Cardiovasc Intervent Radiol 2022; 45:606-612. [PMID: 35233662 PMCID: PMC9018632 DOI: 10.1007/s00270-022-03075-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 01/27/2022] [Indexed: 11/29/2022]
Abstract
Purpose The primary objective is to determine the minimal ablation margin required to achieve a local recurrence rate of < 10% in patients with hepatocellular carcinoma undergoing thermal ablation. Secondary objectives are to analyze the correlation between ablation margins and local recurrence and to assess efficacy. Materials and Methods This study is a prospective, multicenter, non-experimental, non-comparative, open-label study. Patients > 18 years with Barcelona Clinic Liver Cancer stage 0/A hepatocellular carcinoma (or B with a maximum of two lesions < 5 cm each) are eligible. Patients will undergo dual-phase contrast-enhanced computed tomography directly before and after ablation. Ablation margins will be quantitatively assessed using co-registration software, blinding assessors (i.e. two experienced radiologists) for outcome. Presence and location of recurrence are evaluated independently on follow-up scans by two other experienced radiologists, blinded for the quantitative margin analysis. A sample size of 189 tumors (~ 145 patients) is required to show with 80% power that the risk of local recurrence is confidently below 10%. A two-sided binomial z-test will be used to test the null hypothesis that the local recurrence rate is ≥ 10% for patients with a minimal ablation margin ≥ 2 mm. Logistic regression will be used to find the relationship between minimal ablation margins and local recurrence. Kaplan–Meier estimates are used to assess local and overall recurrence, disease-free and overall survival. Discussion It is expected that this study will result in a clear understanding of the correlation between ablation margins and local recurrence. Using co-registration software in future patients undergoing ablation for hepatocellular carcinoma may improve intraprocedural evaluation of technical success. Trial registration The Netherlands Trial Register (NL9713), https://www.trialregister.nl/trial/9713.
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Affiliation(s)
- Timo T M Oosterveer
- Department of Radiology, Leiden University Medical Center, PO Box 9600, 2300 RC, Leiden, The Netherlands.
| | - Gonnie C M van Erp
- Department of Radiology, Leiden University Medical Center, PO Box 9600, 2300 RC, Leiden, The Netherlands
| | - Pim Hendriks
- Department of Radiology, Leiden University Medical Center, PO Box 9600, 2300 RC, Leiden, The Netherlands
| | - Alexander Broersen
- Department of Radiology, Leiden University Medical Center, PO Box 9600, 2300 RC, Leiden, The Netherlands.,Division of Image Processing, Leiden University Medical Center, Leiden, The Netherlands
| | - Christiaan G Overduin
- Department of Medical Imaging, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Carla S P van Rijswijk
- Department of Radiology, Leiden University Medical Center, PO Box 9600, 2300 RC, Leiden, The Netherlands
| | - Arian R van Erkel
- Department of Radiology, Leiden University Medical Center, PO Box 9600, 2300 RC, Leiden, The Netherlands
| | - Rutger W van der Meer
- Department of Radiology, Leiden University Medical Center, PO Box 9600, 2300 RC, Leiden, The Netherlands
| | - Maarten E Tushuizen
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Adriaan Moelker
- Department of Radiology and Nuclear Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Martijn R Meijerink
- Department of Radiology, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - Otto M van Delden
- Department of Radiology, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - Koert P de Jong
- Department of Hepatobiliary and Pancreatic Surgery, University Medical Center Groningen, Groningen, The Netherlands
| | | | - Maarten L J Smits
- Department of Radiology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Thijs A J Urlings
- Department of Radiology, Haaglanden Medical Center, Hague, The Netherlands
| | - Jeffrey P B M Braak
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | | | - Bianca van Duijn-de Vreugd
- Department of Radiology, Leiden University Medical Center, PO Box 9600, 2300 RC, Leiden, The Netherlands
| | | | - Jelle J Goeman
- Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, The Netherlands
| | - Jurgen J Fütterer
- Department of Medical Imaging, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Minneke J Coenraad
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Jouke Dijkstra
- Department of Radiology, Leiden University Medical Center, PO Box 9600, 2300 RC, Leiden, The Netherlands.,Division of Image Processing, Leiden University Medical Center, Leiden, The Netherlands
| | - Mark C Burgmans
- Department of Radiology, Leiden University Medical Center, PO Box 9600, 2300 RC, Leiden, The Netherlands
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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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42
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Yao J, Liu B, Wang X, Yu J, Cheng Z, Han Z, Liu F, Zheng R, Cheng W, Wei Q, Yu S, Li K, Chen P, Luo Y, Yu X, Liang P. Long-term efficacy of microwave ablation in the treatment of subcapsular hepatocellular carcinomas of ≤3 cm in diameter: a multicenter, propensity score-matched study. Int J Hyperthermia 2022; 39:209-216. [PMID: 35067144 DOI: 10.1080/02656736.2021.2023228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Affiliation(s)
- Jundong Yao
- Department of Interventional Ultrasound, 5th Medical Center of Chinese PLA General Hospital, Beijing, China
- Chinese PLA Medical School, Beijing, China
| | - Binbin Liu
- Henan University of Science and Technology School of Nursing, Luoyang, China
| | - Xiaohui Wang
- Department of Ultrasound Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jie Yu
- Department of Interventional Ultrasound, 5th Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Zhigang Cheng
- Department of Interventional Ultrasound, 5th Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Zhiyu Han
- Department of Interventional Ultrasound, 5th Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Fangyi Liu
- Department of Interventional Ultrasound, 5th Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Rongqin Zheng
- Department of Medical Ultrasonics, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Wen Cheng
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, China
| | - Qiang Wei
- Department of Ultrasound, The Second Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Songyuan Yu
- Department of Ultrasound, Wuhan University of science and technology, Tianyou Hospital, Wuhan, China
| | - Kai Li
- Chinese PLA Medical School, Beijing, China
| | - Peng Chen
- Chinese PLA Medical School, Beijing, China
| | - Yanchun Luo
- Department of Interventional Ultrasound, 5th Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Xiaoling Yu
- Department of Interventional Ultrasound, 5th Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Ping Liang
- Department of Interventional Ultrasound, 5th Medical Center of Chinese PLA General Hospital, Beijing, China
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CT-monitored minimal ablative margin control in single-session microwave ablation of liver tumors: an effective strategy for local tumor control. Eur Radiol 2022; 32:6327-6335. [PMID: 35389047 PMCID: PMC9381632 DOI: 10.1007/s00330-022-08723-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 02/21/2022] [Accepted: 03/05/2022] [Indexed: 01/19/2023]
Abstract
OBJECTIVES To investigate the usefulness of minimal ablative margin (MAM) control by intra-procedural contrast-enhanced CT (CECT) in microwave ablation (MWA) of liver tumors. METHODS A total of 334 consecutive liver tumors (240 hepatocellular carcinomas [HCCs] and 94 colorectal liver metastases [CRLMs]) in 172 patients treated with percutaneous MWA were retrospectively included. MAM of each tumor was assessed after expected ablation completion using intra-procedural CECT, allowing within-session additional ablation to any potentially insufficient margin. On immediate post-MWA MRI, complete ablation coverage of tumor and final MAM status were determined. The cumulative local tumor progression (LTP) rate was estimated by using the Kaplan-Meier method. To identify predictors of LTP, Cox regression analysis with a shared frailty model was performed. RESULTS Intra-procedural CECT findings prompted additional ablation in 18.9% (63/334) of tumors. Final complete ablation coverage of tumor and sufficient MAM were determined by MRI to be achieved in 99.4% (332/334) and 77.5% (259/334), and their estimated 6-month, 1-year, and 2-year LTP rates were 3.2%, 7.5%, and 12.9%; and 1.0%, 2.1%, and 6.9%, respectively. Insufficient MAM on post-MWA MRI, perivascular tumor location, and tumor size (cm) were independent risk factors for LTP (hazard ratio = 14.4, 6.0, and 1.1, p < 0.001, p = 0.003, and p = 0.011, respectively), while subcapsular location and histology (HCC vs CRLM) were not. CONCLUSIONS In MWA of liver tumors, intra-procedural CECT monitoring of minimal ablative margin facilitates identification of potentially suboptimal margins and guides immediate additional intra-session ablation to maximize rates of margin-sufficient ablations, the latter being a highly predictive marker for excellent long-term local tumor control. KEY POINTS • In MWA of liver tumors, intra-procedural CECT can identify potentially suboptimal minimal ablative margin, leading to immediate additional ablation in a single treatment session. • Achieving a finally sufficient ablative margin through the MWA with intra-procedural CECT monitoring of minimal ablative margin results in excellent local tumor control.
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Ruiter SJS, Tinguely P, Paolucci I, Engstrand J, Candinas D, Weber S, de Haas RJ, de Jong KP, Freedman J. 3D Quantitative Ablation Margins for Prediction of Ablation Site Recurrence After Stereotactic Image-Guided Microwave Ablation of Colorectal Liver Metastases: A Multicenter Study. Front Oncol 2021; 11:757167. [PMID: 34868968 PMCID: PMC8634106 DOI: 10.3389/fonc.2021.757167] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 10/15/2021] [Indexed: 01/29/2023] Open
Abstract
Background Three-dimensional (3D) volumetric ablation margin assessment after thermal ablation of liver tumors using software has been described, but its predictive value on treatment efficacy when accounting for other factors known to correlate ablation site recurrence (ASR) remains unknown. Purpose To investigate 3D quantitative ablation margins (3D-QAMs) as an algorithm to predict ASR within 1 year after stereotactic microwave ablation (SMWA) for colorectal liver metastases (CRLM). Materials and Methods Sixty-five tumors in 47 patients from a prospective multicenter study of patients undergoing SMWA for CRLM were included in this retrospective 3D-QAM analysis. Using a previously developed algorithm, 3D-QAM defined as the distribution of tumor to ablation surface distances was assessed in co-registered pre- and post-ablation CT scans. The discriminatory power and optimal cutoff values for 3D-QAM were assessed using receiver operating characteristic (ROC) curves. Multivariable logistic regression analysis using generalized estimating equations was applied to investigate the impact of various 3D-QAM outputs on 1-year ASR while accounting for other known influencing factors. Results Ten of the 65 (15.4%) tumors included for 3D-QAM analysis developed ASR. ROC analyses identified i) 3D-QAM <1 mm for >23% of the tumor surface, ii) 3D-QAM <5 mm for >45%, and iii) the minimal ablation margin (MAM) as the 3D-QAM outputs with optimal discriminatory qualities. The multivariable regression model without 3D-QAM yielded tumor diameter and KRAS mutation as 1-year ASR predictors. When adding 3D-QAM, this factor became the main predictor of 1-year ASR [odds ratio (OR) 21.67 (CI 2.48, 165.21) if defined as >23% <1 mm; OR 0.52 (CI 0.29, 0.95) if defined as MAM]. Conclusions 3D-QAM allows objectifiable and standardized assessment of tumor coverage by the ablation zone after SMWA. Our data shows that 3D-QAM represents the most important factor predicting ASR within 1 year after SMWA of CRLM.
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Affiliation(s)
- Simeon J S Ruiter
- Department of Hepato-Pancreato-Biliary Surgery and Liver Transplantation, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Pascale Tinguely
- Division of Surgery, Department of Clinical Sciences, Karolinska Institutet at Danderyd Hospital, Stockholm, Sweden.,Department of Visceral Surgery and Medicine, Inselspital, University Hospital Bern, Bern, Switzerland
| | - Iwan Paolucci
- ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Jennie Engstrand
- Division of Surgery, Department of Clinical Sciences, Karolinska Institutet at Danderyd Hospital, Stockholm, Sweden
| | - Daniel Candinas
- Department of Visceral Surgery and Medicine, Inselspital, University Hospital Bern, Bern, Switzerland
| | - Stefan Weber
- ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Robbert J de Haas
- Department of Radiology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Koert P de Jong
- Department of Hepato-Pancreato-Biliary Surgery and Liver Transplantation, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Jacob Freedman
- Division of Surgery, Department of Clinical Sciences, Karolinska Institutet at Danderyd Hospital, Stockholm, Sweden
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Lee EJ, Plishker W, Hata N, Shyn PB, Silverman SG, Bhattacharyya SS, Shekhar R. Rapid Quality Assessment of Nonrigid Image Registration Based on Supervised Learning. J Digit Imaging 2021; 34:1376-1386. [PMID: 34647199 PMCID: PMC8669090 DOI: 10.1007/s10278-021-00523-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 08/03/2021] [Accepted: 08/17/2021] [Indexed: 11/25/2022] Open
Abstract
When preprocedural images are overlaid on intraprocedural images, interventional procedures benefit in that more structures are revealed in intraprocedural imaging. However, image artifacts, respiratory motion, and challenging scenarios could limit the accuracy of multimodality image registration necessary before image overlay. Ensuring the accuracy of registration during interventional procedures is therefore critically important. The goal of this study was to develop a novel framework that has the ability to assess the quality (i.e., accuracy) of nonrigid multimodality image registration accurately in near real time. We constructed a solution using registration quality metrics that can be computed rapidly and combined to form a single binary assessment of image registration quality as either successful or poor. Based on expert-generated quality metrics as ground truth, we used a supervised learning method to train and test this system on existing clinical data. Using the trained quality classifier, the proposed framework identified successful image registration cases with an accuracy of 81.5%. The current implementation produced the classification result in 5.5 s, fast enough for typical interventional radiology procedures. Using supervised learning, we have shown that the described framework could enable a clinician to obtain confirmation or caution of registration results during clinical procedures.
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Affiliation(s)
- Eung-Joo Lee
- Department of Electrical and Computer Engineering, University of Maryland, College Park, MD USA
| | - William Plishker
- Institute for Advanced Computer Studies, University of Maryland, College Park, MD USA
| | | | | | | | - Shuvra S. Bhattacharyya
- Department of Electrical and Computer Engineering, University of Maryland, College Park, MD USA
- Department of Radiology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA USA
| | - Raj Shekhar
- Institute for Advanced Computer Studies, University of Maryland, College Park, MD USA
- Sheikh Zayed Institute for Pediatric Surgical Innovation, Children’s National Hospital, Washington, DC USA
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46
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Li FY, Li JG, Wu SS, Ye HL, He XQ, Zeng QJ, Zheng RQ, An C, Li K. An Optimal Ablative Margin of Small Single Hepatocellular Carcinoma Treated with Image-Guided Percutaneous Thermal Ablation and Local Recurrence Prediction Base on the Ablative Margin: A Multicenter Study. J Hepatocell Carcinoma 2021; 8:1375-1388. [PMID: 34815974 PMCID: PMC8604653 DOI: 10.2147/jhc.s330746] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 10/26/2021] [Indexed: 01/05/2023] Open
Abstract
Objective To explore the best ablative margin (AM) for single hepatocellular carcinoma (HCC) patients with image-guided percutaneous thermal ablation (IPTA) based on MRI–MRI fusion imaging, and to develop and validate a local tumor progression (LTP) predictive model based on the recommended AM. Methods Between March 2014 and August 2019, 444 treatment-naïve patients with single HCC (diameter ≤3 cm) who underwent IPTA as first-line treatment from three hospitals were included, which were randomly divided into training (n= 296) and validation (n = 148) cohorts. We measured the ablative margin (AM) by MRI–MRI fusion imaging based on pre-ablation and post-ablation images. Then, we followed up their LPT and verified the optimal AM. Risk factors related to LTP were explored through Cox regression models, the nomogram was developed to predict the LTP risk base on the risk factors, and subsequently validated. The predictive performance and discrimination were assessed and compared with conventional indices. Results The median follow-up was 19.9 months (95% CI 18.0–21.8) for the entire cohort. The results revealed that the tumor size (HR: 2.16; 95% CI 1.25–3.72; P = 0.003) and AM (HR: 0.72; 95% CI, 0.61–0.85; P < 0.001) were independent prognostic factors for LTP. The AM had a pronounced nonlinear impact on LTP, and a cut-off value of 5-mm was optimal. We developed and validated an LTP predictive model based on the linear tumor size and nonlinear AM. The model showed good predictive accuracy and discrimination (training set, concordance index [C-index] of 0.751; validation set, C-index of 0.756) and outperformed other conventional indices. Conclusion The 5-mm AM is recommended for the best IPTA candidates with single HCC (diameter ≤3 cm). We provided an LTP predictive model that exhibited adequate performance for individualized prediction and risk stratification.
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Affiliation(s)
- Feng-Yao Li
- Department of Ultrasound, Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Jian-Guo Li
- The Department of Infectious Disease,The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Song-Song Wu
- Shengli Clinical Medical College of Fujian Medical University, Department of Ultrasonography,Fujian Provincial Hospital, Fuzhou, People's Republic of China
| | - Huo-Lin Ye
- Department of Ultrasound, Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Xu-Qi He
- Department of Ultrasound, Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Qing-Jing Zeng
- Department of Ultrasound, Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Rong-Qin Zheng
- Department of Ultrasound, Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Chao An
- Department of Minimal Invasive Intervention, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People's Republic of China
| | - Kai Li
- Department of Ultrasound, Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China
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Mitani H, Naito A, Chosa K, Kodama H, Sumida M, Moriya T, Awai K. Safety margin for CT- and US-guided radiofrequency ablation after TACE of HCC in the hepatic dome. MINIM INVASIV THER 2021; 31:894-901. [PMID: 34726557 DOI: 10.1080/13645706.2021.1995436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
INTRODUCTION We evaluated the safety margin in patients with hepatocellular carcinoma (HCC) in the hepatic dome who underwent computed tomography (CT)- or ultrasound (US)-guided radiofrequency ablation (RFA). MATERIAL AND METHODS Included in this single-center study were 46 patients with 56 HCCs in the hepatic dome undergoing RFA after transarterial chemoembolization from January 2009 to December 2016. Thirty were addressed with CT fluoroscopy and 26 with US guidance. The technical success, safety margin, and local tumor progression (LTP) were evaluated. RESULTS Technical success rate was 100% in the CT-RFA and 84.6% in the US-RFA group (p = .04). The average safety margin was 4.8 mm in the CT-RFA and 3.0 mm in the US-RFA group (p = .01). There was no LTP among the HCCs with a safety margin >3 mm achieved in 73.3% CT-RFA and 42.3% US-RFA group tumors (p = .03). Of the US-RFA group, six required additional RFA. There was no significant inter-group difference in LTP (p = .36). CONCLUSION CT-guided RFA was superior to US-guided RFA with respect to the technical success rate and the acquisition of an appropriate safety margin in patients with HCC in the hepatic dome.
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Affiliation(s)
- Hidenori Mitani
- Department of Radiology, Chugoku Rosai Hospital, Kure, Japan.,Department of Diagnostic Radiology, Graduate School of Biomedical and Health Sciences, Hiroshima University Hospital, Hiroshima, Japan
| | - Akira Naito
- Department of Radiology, Memorial Jun Makidono Hospital, Hiroshima, Japan
| | - Keigo Chosa
- Department of Diagnostic Radiology, Graduate School of Biomedical and Health Sciences, Hiroshima University Hospital, Hiroshima, Japan
| | - Hisayuki Kodama
- Department of Radiology, Chugoku Rosai Hospital, Kure, Japan
| | - Masumi Sumida
- Department of Radiology, Chugoku Rosai Hospital, Kure, Japan
| | - Takashi Moriya
- Department of Internal Medicine, Chugoku Rosai Hospital, Kure, Japan
| | - Kazuo Awai
- Department of Diagnostic Radiology, Graduate School of Biomedical and Health Sciences, Hiroshima University Hospital, Hiroshima, Japan
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Weng X, Song H, Fu T, Gao Y, Fan J, Ai D, Lin Y, Yang J. An optimal ablation time prediction model based on minimizing the relapse risk. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2021; 212:106438. [PMID: 34656904 DOI: 10.1016/j.cmpb.2021.106438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 09/18/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVE Percutaneous microwave ablation is an essential and safe method for the treatment of liver cancer. As one therapeutic dose, ablation time is crucial to the treatment effect determined by the physicians. However, due to the different experiences of physicians and the significant individual differences of patients, the final treatment effect is also different, which makes it difficult for the ablation time recorded in the electronic health records (EHRs) to follow the same pattern. To solve this problem, we propose a data mining method based on historical treatment data recorded in EHR, which uses a robust relapse risk as strong supervision to correct the ablation time. The prediction results of this method are closer to the situation of patients without relapse, which can provide physicians with reference. METHODS In the proposed method, we introduce the optimization method to iteratively minimize the postoperative relapse risk and utilize gradient propagation between the risk and ablation time during iteration to correct the latter. We also apply a self-attention mechanism to find the global dependencies between each feature in EHR to improve the final prediction performance of the model. RESULTS Comparative experimental results show that compared with other baseline model, the proposed model achieves better performance on R-square, MAE, and MSE metric. The results of ablation experiments show that the integration of label correction and self-attention mechanism can improve the model performance. CONCLUSIONS We using relapse risk as strong supervision related to the ablation time can effectively correct the deviation of the ablation time as weak supervision. The self-attention mechanism in the proposed model can significantly improve the prediction performance.
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Affiliation(s)
- Xutao Weng
- School of Computer Science and Technology, Beijing Institute of Technology, Beijing, 100081, China
| | - Hong Song
- School of Computer Science and Technology, Beijing Institute of Technology, Beijing, 100081, China.
| | - Tianyu Fu
- School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China
| | - Yuanjin Gao
- Department of Interventional Ultrasound, Chinese PLA general hospital, Beijing, 100853, China
| | - Jingfan Fan
- School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China
| | - Danni Ai
- School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China
| | - Yucong Lin
- School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China.
| | - Jian Yang
- School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China
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Rai P, Dakua S, Abinahed J, Balakrishnan S. Feasibility and Efficacy of Fusion Imaging Systems for Immediate Post Ablation Assessment of Liver Neoplasms: Protocol for a Rapid Systematic Review. Int J Surg Protoc 2021; 25:209-215. [PMID: 34611571 PMCID: PMC8447974 DOI: 10.29337/ijsp.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 09/02/2021] [Indexed: 11/24/2022] Open
Abstract
Introduction: Percutaneous thermal ablation is widely adopted as a curative treatment approach for unresectable liver neoplasms. Accurate immediate assessment of therapeutic response post-ablation is critical to achieve favourable outcomes. The conventional technique of side-by-side comparison of pre- and post-ablation scans is challenging and hence there is a need for improved methods, which will accurately evaluate the immediate post-therapeutic response. Objectives and Significance: This review summarizes the findings of studies investigating the feasibility and efficacy of the fusion imaging systems in the immediate post-operative assessment of the therapeutic response to thermal ablation in liver neoplasms. The findings could potentially empower the clinicians with updated knowledge of the state-of-the-art in the assessment of treatment response for unresectable liver neoplasms. Methods and Analysis: A rapid review will be performed on publicly available major electronic databases to identify articles reporting the feasibility and efficacy of the fusion imaging systems in the immediate assessment of the therapeutic response to thermal ablation in liver neoplasms. The risk of bias and quality of articles will be assessed using the Cochrane risk of bias tool 2.0 and Newcastle Ottawa tool. Ethics and Dissemination: Being a review, we do not anticipate the need for any approval from the Institutional Review Board. The outcomes of this study will be published in a peer-reviewed journal. Highlights Evaluation of the therapeutic response in liver neoplasms immediately post-ablation is critical to achieve favourable patient outcomes. We will examine the feasibility and technical efficacy of different fusion imaging systems in assessing the immediate treatment response post-ablation. The findings are expected to guide the clinicians with updated knowledge on the state-of-the-art when assessing the immediate treatment response for unresectable liver neoplasms.
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Affiliation(s)
- Pragati Rai
- Department of Surgery, Hamad Medical Corporation, Doha, Qatar
| | - Sarada Dakua
- Department of Surgery, Hamad Medical Corporation, Doha, Qatar
| | - Julien Abinahed
- Department of Surgery, Hamad Medical Corporation, Doha, Qatar
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Schullian P, Johnston E, Laimer G, Putzer D, Eberle G, Scharll Y, Ianetti-Hackl C, Bale R. Stereotactic Radiofrequency Ablation of Breast Cancer Liver Metastases: Short- and Long-Term Results with Predicting Factors for Survival. Cardiovasc Intervent Radiol 2021; 44:1184-1193. [PMID: 33825059 PMCID: PMC8249280 DOI: 10.1007/s00270-021-02820-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 03/01/2021] [Indexed: 02/07/2023]
Abstract
PURPOSE To evaluate safety, local oncological control, long-term outcome and potential prognostic factors of stereotactic RFA (SRFA) for the treatment of BCLMs. METHODS Between July 2003 and December 2019, 42 consecutive female patients with median age 54.0 years were treated with SRFA at our institution for 110 BCLMs in 48 ablation sessions. Median tumor size was 3.0 cm (0.8-9.0). Eighteen (42.9%) patients had extrahepatic metastasis at initial SRFA. RESULTS Technical success rate was 100%, i.e., all coaxial needles were inserted with appropriate accuracy within 10 mm off plan and 107/110 (92.3%) BCLMs were successfully ablated at initial SRFA. Four Grade 1 (8.3%, 4/48) and one Grade 2 (2.1%, 1/48) complications occurred. No perioperative deaths occurred. Local recurrence developed in 8 of 110 tumors (7.3%). Overall survival (OS) rates of all patients at 1, 3, and 5 years from the date of the first SRFA were 84.1%, 49.3%, and 20.8% with a median OS of 32.3 months. Univariable cox regression analyses revealed age > 60 years and extrahepatic disease (without bone only metastases) as significant predictors of worse OS (p = 0.013 and 0.025, respectively). Size and number of metastases, hormone receptor status and time onset did not significantly affect OS after initial SRFA. CONCLUSIONS SRFA is a safe, minimally invasive treatment option in the management of BCLMs, especially in younger patients without advanced extrahepatic metastasis, including those with large liver tumors.
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Affiliation(s)
- Peter Schullian
- Department of Radiology, Section of Interventional Oncology - Microinvasive Therapy (SIP), Medical University of Innsbruck, Anichstr. 35, Innsbruck, 6020, Austria
| | - Edward Johnston
- Royal Marsden Hospital, 203 Fulham Road, Chelsea, London, SW3 6JJ, UK
| | - Gregor Laimer
- Department of Radiology, Section of Interventional Oncology - Microinvasive Therapy (SIP), Medical University of Innsbruck, Anichstr. 35, Innsbruck, 6020, Austria
| | - Daniel Putzer
- Department of Radiology, Section of Interventional Oncology - Microinvasive Therapy (SIP), Medical University of Innsbruck, Anichstr. 35, Innsbruck, 6020, Austria
| | - Gernot Eberle
- Department of Radiology, Section of Interventional Oncology - Microinvasive Therapy (SIP), Medical University of Innsbruck, Anichstr. 35, Innsbruck, 6020, Austria
| | - Yannick Scharll
- Department of Radiology, Section of Interventional Oncology - Microinvasive Therapy (SIP), Medical University of Innsbruck, Anichstr. 35, Innsbruck, 6020, Austria
| | - Claudia Ianetti-Hackl
- Visceral, Transplant and Thoracic Surgery, Center of Operative Medicine, Medical University of Innsbruck, Anichstr. 35, Innsbruck, 6020, Austria
| | - Reto Bale
- Department of Radiology, Section of Interventional Oncology - Microinvasive Therapy (SIP), Medical University of Innsbruck, Anichstr. 35, Innsbruck, 6020, Austria.
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