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Li S, Zhou Z, Wu S, Wu W. Ultrasound Homodyned-K Contrast-Weighted Summation Parametric Imaging Based on H-scan for Detecting Microwave Ablation Zones. ULTRASONIC IMAGING 2023; 45:119-135. [PMID: 36995065 DOI: 10.1177/01617346231162928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
The homodyned-K (HK) distribution is a generalized model of envelope statistics whose parameters α (the clustering parameter) and k (the coherent-to-diffuse signal ratio) can be used to monitor the thermal lesions. In this study, we proposed an ultrasound HK contrast-weighted summation (CWS) parametric imaging algorithm based on the H-scan technique and investigated the optimal window side length (WSL) of the HK parameters estimated by the XU estimator (an estimation method based on the first moment of the intensity and two log-moments, which was used in the proposed algorithm) through phantom simulations. H-scan diversified ultrasonic backscattered signals into low- and high-frequency passbands. After envelope detection and HK parameter estimation for each frequency band, the α and k parametric maps were obtained, respectively. According to the contrast between the target region and background, the (α or k) parametric maps of the dual-frequency band were weighted and summed, and then the CWS images were yielded by pseudo-color imaging. The proposed HK CWS parametric imaging algorithm was used to detect the microwave ablation coagulation zones of porcine liver ex vivo under different powers and treatment durations. The performance of the proposed algorithm was compared with that of the conventional HK parametric imaging and frequency diversity and compounding Nakagami imaging algorithms. For two-dimensional HK parametric imaging, it was found that a WSL equal to 4 pulse lengths of the transducer was sufficient for estimating the α and k parameters in terms of both parameter estimation stability and parametric imaging resolution. The HK CWS parametric imaging provided an improved contrast-to-noise ratio over conventional HK parametric imaging, and the HK αcws parametric imaging achieved the best accuracy and Dice score of coagulation zone detection.
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Affiliation(s)
- Sinan Li
- Department of Biomedical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing, China
| | - Zhuhuang Zhou
- Department of Biomedical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing, China
| | - Shuicai Wu
- Department of Biomedical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing, China
| | - Weiwei Wu
- College of Biomedical Engineering, Capital Medical University, Beijing, China
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Beermann M, Jonsdottir G, Cronisoe A, Hasselrot K, Kopp Kallner H. Long term follow-up of uterine fibroids treated with microwave ablation: an up to 3-year observational study of volume, regrowth, and symptoms. Int J Hyperthermia 2022; 39:1158-1163. [PMID: 36049885 DOI: 10.1080/02656736.2022.2109764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Abstract
OBJECTIVE To study long-term effects in patients treated with microwave ablation (MWA) for symptomatic uterine fibroids and investigate fibroid characteristics predictive of successful treatment. METHOD Women who received MWA treatment for uterine fibroids in a previous study were included. A total of 16 patients underwent contrast enhanced MRI before treatment, postoperatively at 6 months and at long-term follow-up, to assess volumes of treated fibroids (n = 42). Long-term MRI was performed between 16 and 36 months after treatment [median 22 months, interquartile range (IQR) 18.5-27]. Validated questionnaires for evaluation of uterine fibroid symptoms and menstrual bleeding (UFS-QoL and PBAC) were used to assess long-term effects on symptoms. The degree of shrinkage was correlated to vascularization and T2 signal intensity (SI) at preoperative MRI and location of fibroids according to the FIGO classification, using the Mann-Whitney U test. RESULTS Most patients (82%) reported improvement up to 3 years after treatment. Out of 42 treated fibroids, 35 (83%) continued to shrink over time with median relative volume reduction of 77% (IQR 39-95). For eight fibroids (19%) which showed low vascularization on the pretreatment MRI, there was less shrinkage compared to well-vascularized fibroids (p = 0.01). Most fibroids (79%) showed iso- to hyperintense T2 signal on preoperative MRI and showed a higher grade of shrinkage than hypointense fibroids (p = 0.02). CONCLUSION After microwave treatment improvement is maintained for most patients up to 36 months and most fibroids showed continuous shrinkage. Preoperative vascularization, high T2 SI and submucosal location predicted continuous volume reduction. However, to confirm this, larger studies are needed.
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Affiliation(s)
- Marie Beermann
- Department of Radiology, Danderyd Hospital, Stockholm, Sweden.,Department of Clincial Sciences, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden
| | - Gudny Jonsdottir
- Department of Clincial Sciences, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden.,Department of Obstetrics and Gynecology, Danderyd Hospital, Stockholm, Sweden
| | - Annika Cronisoe
- Department of Obstetrics and Gynecology, Danderyd Hospital, Stockholm, Sweden
| | - Klara Hasselrot
- Department of Clincial Sciences, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden.,Department of Obstetrics and Gynecology, Danderyd Hospital, Stockholm, Sweden
| | - Helena Kopp Kallner
- Department of Clincial Sciences, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden.,Department of Obstetrics and Gynecology, Danderyd Hospital, Stockholm, Sweden
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Pusceddu C, Mascia L, Ninniri C, Ballicu N, Zedda S, Melis L, Deiana G, Porcu A, Fancellu A. The Increasing Role of CT-Guided Cryoablation for the Treatment of Liver Cancer: A Single-Center Report. Cancers (Basel) 2022; 14:cancers14123018. [PMID: 35740682 PMCID: PMC9221264 DOI: 10.3390/cancers14123018] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 06/06/2022] [Accepted: 06/14/2022] [Indexed: 02/06/2023] Open
Abstract
Purpose: Cryoablation (CrA) is a minimally invasive treatment that can be used in primary and metastatic liver cancer. The purpose of this study was to assess the effectiveness of CrA in patients with hepatocellular carcinoma (HCC) and liver metastases. Methods: We retrospectively evaluated the patients who had CrA for HCC or liver metastases between 2015 and 2020. Technical success, complete ablation, CrA-related complications, local tumor progression, local recurrences, and distant metastases were evaluated in the study population. In patients with HCC, the median survival was also estimated. Results: Sixty-four liver tumors in 49 patients were treated with CrA (50 metastases and 14 HCC). The mean tumor diameter was 2.15 cm. The mean follow-up was 19.8 months. Technical success was achieved in the whole study population. Complete tumor ablation was observed after one month in 92% of lesions treated with CrA (79% and 96% in the HCC Group and metastases Group, respectively, p < 0.001). Local tumor progression occurred in 12.5 of lesions, with no difference between the study groups (p = 0.105). Sixteen patients (33%) developed local recurrence (45% and 29% in the HCC Group and metastases Group, respectively, p = 0.477). Seven patients (14%) developed distant metastases in the follow-up period. Ten patients (20.8%) underwent redo CrA for local recurrence or incomplete tumor ablation. Minor complications were observed in 14% of patients. In patients with HCC, the median survival was 22 months. Conclusions: CrA can be safely used for treatment of HCC and liver metastases not amenable of surgical resection. Further studies are necessary to better define the role of CrA in the multidisciplinary treatment of liver malignancies.
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Affiliation(s)
- Claudio Pusceddu
- Department of Oncological and Interventional Radiology, Oncological Hospital A, Businco, I-09121 Cagliari, Italy; (C.P.); (N.B.); (S.Z.); (L.M.)
| | - Luigi Mascia
- Department of Medical Oncology, Oncological Hospital A, Businco, I-09121 Cagliari, Italy;
| | - Chiara Ninniri
- Unit of General Surgery 2, Clinica Chirurgica, Department of Medical, Surgical, and Experimental Sciences, University of Sassari, I-07100 Sassari, Italy; (C.N.); (G.D.); (A.P.)
| | - Nicola Ballicu
- Department of Oncological and Interventional Radiology, Oncological Hospital A, Businco, I-09121 Cagliari, Italy; (C.P.); (N.B.); (S.Z.); (L.M.)
| | - Stefano Zedda
- Department of Oncological and Interventional Radiology, Oncological Hospital A, Businco, I-09121 Cagliari, Italy; (C.P.); (N.B.); (S.Z.); (L.M.)
| | - Luca Melis
- Department of Oncological and Interventional Radiology, Oncological Hospital A, Businco, I-09121 Cagliari, Italy; (C.P.); (N.B.); (S.Z.); (L.M.)
| | - Giulia Deiana
- Unit of General Surgery 2, Clinica Chirurgica, Department of Medical, Surgical, and Experimental Sciences, University of Sassari, I-07100 Sassari, Italy; (C.N.); (G.D.); (A.P.)
| | - Alberto Porcu
- Unit of General Surgery 2, Clinica Chirurgica, Department of Medical, Surgical, and Experimental Sciences, University of Sassari, I-07100 Sassari, Italy; (C.N.); (G.D.); (A.P.)
| | - Alessandro Fancellu
- Unit of General Surgery 2, Clinica Chirurgica, Department of Medical, Surgical, and Experimental Sciences, University of Sassari, I-07100 Sassari, Italy; (C.N.); (G.D.); (A.P.)
- Correspondence: ; Tel.: +39-079-228432; Fax: +39-079-228394
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Flavonoids Enhance Lipofection Efficiency and Ameliorate Cytotoxicity in Colon26 and HepG2 Cells via Oxidative Stress Regulation. Pharmaceutics 2022; 14:pharmaceutics14061203. [PMID: 35745776 PMCID: PMC9231055 DOI: 10.3390/pharmaceutics14061203] [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: 05/16/2022] [Revised: 06/01/2022] [Accepted: 06/04/2022] [Indexed: 12/10/2022] Open
Abstract
The generation of reactive oxygen species (ROS) can affect cationic liposome-mediated transfection. In this study, we focused on a specific class of antioxidants, flavonoids, to investigate the transfection efficiency using cationic liposome/plasmid DNA complexes (lipoplexes) in 2D and 3D cultures of Colon26 and HepG2 cells, respectively. All tested flavonoids enhanced the transfection efficiency in 2D Colon26 and HepG2 cells. Among the tested flavonoids, 25 µM quercetin showed the highest promotion effect of 8.4- and 7.6-folds in 2D Colon26 and HepG2 cells, respectively. Transfection was also performed in 3D cultures of Colon26 and HepG2 cells using lipoplexes with quercetin. Quercetin (12.5 µM) showed the highest transfection efficiency at all transfection timings in 3D Colon26 and HepG2 cells with increased cell viability. Flow cytometry revealed that quercetin treatment reduced the population of gene expression-negative cells with high ROS levels and increased the number of gene expression-positive cells with low ROS levels in HepG2 cells. Information from this study can be valuable to develop strategies to promote transfection efficiency and attenuate cytotoxicity using lipoplexes.
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Jonsdottir G, Beermann M, Lundgren Cronsioe A, Hasselrot K, Kopp Kallner H. Ultrasound guided microwave ablation compared to uterine artery embolization treatment for uterine fibroids - a randomized controlled trial. Int J Hyperthermia 2022; 39:341-347. [PMID: 35134317 DOI: 10.1080/02656736.2022.2034991] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
OBJECTIVE To evaluate the efficacy, feasibility and acceptability of microwave ablation (MWA) compared to uterine artery embolization (UAE) as treatment for uterine fibroids. METHOD A randomized controlled superiority trial, including premenopausal women 30-55 years, with symptomatic uterine fibroids without any single fibroid exceeding mean diameter of eight centimeters. Patients were randomized to receive microwave ablation, performed abdominally or vaginally, or to uterine artery embolization. The primary outcome was volume difference of the three largest fibroids at 6 months post treatment evaluated by magnetic resonance imaging (MRI) by a blinded radiologist analyzed by Mann-Whitney U-test. Secondary outcomes included symptom severity score (SSS), health related quality of life (HR-QoL), amount of menstrual bleeding, postoperative pain, length of hospitalization, need for additional treatment, adverse events and if patients would recommend the treatment to a friend. RESULTS Patients were recruited from 30 January 2017 to 12 September 2019, with a total of 17 patients treated in each group from May 2017 to December 2019. Superiority of MWA could not be established. The volume reduction was 41.8% (Interquartile range, IQR, 14-63) in the MWA group compared to 62.2% (IQR 34.9-80.1) in the UAE group (p = 0.29). Effects on symptoms, HR-QoL and acceptability did not differ between groups. Days of hospitalization and sick leave were significantly fewer in the MWA group (p < 0.001 and p = 0.001). CONCLUSIONS Although superiority of MWA could not be established, it is a promising technique for treating uterine fibroids. It was well tolerated and associated with lower use of health care resources. Trial registration: NCT02942537, www.clincialtrials.gov.
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Affiliation(s)
- Gudny Jonsdottir
- Department of Obstetrics and Gynecology, Danderyd Hospital, Stockholm, Sweden.,Department of Clinical Sciences at, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Marie Beermann
- Department of Clinical Sciences at, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden.,Department of Radiology, Danderyd Hospital, Stockholm, Sweden
| | | | - Klara Hasselrot
- Department of Obstetrics and Gynecology, Danderyd Hospital, Stockholm, Sweden.,Department of Clinical Sciences at, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Helena Kopp Kallner
- Department of Obstetrics and Gynecology, Danderyd Hospital, Stockholm, Sweden.,Department of Clinical Sciences at, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
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Sparchez Z, Radu P, Bartos A, Nenu I, Craciun R, Mocan T, Horhat A, Spârchez M, Dufour JF. Combined treatments in hepatocellular carcinoma: Time to put them in the guidelines? World J Gastrointest Oncol 2021; 13:1896-1918. [PMID: 35070032 PMCID: PMC8713312 DOI: 10.4251/wjgo.v13.i12.1896] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 05/03/2021] [Accepted: 11/04/2021] [Indexed: 02/06/2023] Open
Abstract
The time for battling cancer has never been more suitable than nowadays and fortunately against hepatocellular carcinoma (HCC) we do have a far-reaching arsenal. Moreover, because liver cancer comprises a plethora of stages-from very early to advanced disease and with many treatment options–from surgery to immunotherapy trials–it leaves the clinician a wide range of options. The scope of our review is to throw light on combination treatments that seem to be beyond guidelines and to highlight these using evidence-based analysis of the most frequently used combination therapies, discussing their advantages and flaws in comparison to the current standard of care. One particular combination therapy seems to be in the forefront: Transarterial chemoembolization plus ablation for medium-size non-resectable HCC (3-5 cm), which is currently at the frontier between Barcelona Clinic Liver Cancer classification A and B. Not only does it improve the outcome in contrast to each individual therapy, but it also seems to have similar results to surgery. Also, the abundance of immune checkpoint inhibitors that have appeared lately in clinical trials are bringing promising results against HCC. Although the path of combination therapies in HCC is still filled with uncertainty and caveats, in the following years the hepatology and oncology fields could witness an HCC guideline revolution.
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Affiliation(s)
- Zeno Sparchez
- 3rd Medical Department, “Ïuliu Hatieganu” University of Medicine and Pharmacy, Institute for Gastroenterology and Hepatology, Cluj-Napoca 400162, Romania
| | - Pompilia Radu
- Department of Visceral Surgery and Medicine, Hepatology, Inselspital, Bern University Hospital, University of Bern, Bern 3010, Switzerland
| | - Adrian Bartos
- Department of Surgery, “Ïuliu Hatieganu” University of Medicine and Pharmacy, Institute for Gastroenterology and Hepatology, Cluj-Napoca 400162, Romania
| | - Iuliana Nenu
- 3rd Medical Department, “Ïuliu Hatieganu” University of Medicine and Pharmacy, Institute for Gastroenterology and Hepatology, Cluj-Napoca 400162, Romania
| | - Rares Craciun
- 3rd Medical Department, “Ïuliu Hatieganu” University of Medicine and Pharmacy, Institute for Gastroenterology and Hepatology, Cluj-Napoca 400162, Romania
| | - Tudor Mocan
- 3rd Medical Department, “Ïuliu Hatieganu” University of Medicine and Pharmacy, Institute for Gastroenterology and Hepatology, Cluj-Napoca 400162, Romania
| | - Adelina Horhat
- 3rd Medical Department, “Ïuliu Hatieganu” University of Medicine and Pharmacy, Institute for Gastroenterology and Hepatology, Cluj-Napoca 400162, Romania
| | - Mihaela Spârchez
- Department of Mother and Child, 2nd Paediatric Clinic, “Ïuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca 400177, Romania
| | - Jean-François Dufour
- Department for BioMedical Research, Hepatology, University of Bern, Bern 3008, Switzerland
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