Готові списки джерел за темами / Percutaneous ablation

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Добірка наукової літератури з теми "Percutaneous ablation"

Автор: Grafiati
Опубліковано: 11 березня 2023

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Статті в журналах з теми "Percutaneous ablation"

1

Haanschoten, Danielle M., Ahmet Adiyaman, Jaap Jan J. Smit, Peter Paul H. M. Delnoy, Anand R. Ramdat Misier, Fabiano Porta, Robert P. H. Storm van Leeuwen, and Arif Elvan. "Hybrid Ventricular Tachycardia Ablation after Failed Percutaneous Endocardial and Epicardial Ablation." Cardiology 145, no. 2 (November 8, 2019): 88–94. http://dx.doi.org/10.1159/000503251.

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Анотація:
Introduction: Recurrent ventricular tachycardia (VT) after percutaneous ablation is associated with a high morbidity and mortality. We assessed the feasibility of open chest extracorporeal circulation (ECC)-supported 3D multielectrode mapping and targeted VT substrate ablation in patients with previously failed percutaneous endocardial and epicardial VT ablations. Methods: In patients with previously failed percutaneous endocardial and epicardial VT ablations and a high risk of hemodynamic collapse during the procedure, open chest ECC-supported mapping and ablation were performed in a hybrid EP lab setting. Electro-anatomic maps (3D) were acquired during sinus rhythm and VT using a multielectrode mapping catheter (HD grid; Abbott or Pentaray, Biosense Webster). Irrigated radiofrequency ablations of all inducible VT were performed with a contact force ablation catheter. Results: Hybrid VT ablation was performed in 5 patients with structural heart disease (i.e., 3 with previous old myocardial infarction and 2 with nonischemic cardiomy­opathy) and recurrent VT. Acute procedural success was achieved in all patients. Four patients were successfully weaned off the ECC. In 1 patient with a severely reduced LVEF (16%), damage to the venous graft occurred after sternotomy and that patient died after 1 month. Four patients (80%) remained VT free after a median follow-up of 6 (IQR 4–10) months. Conclusion: In high-risk patients with previously failed percutaneous endocardial and epicardial VT ablations, open chest ECC-supported multielectrode epicardial mapping revealed a VT substrate in all of the patients, and targeted epicardial ablation abolished VT substrate in these patients.
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2

Kurup, A., Matthew Callstrom, and Michael Moynagh. "Thermal Ablation of Bone Metastases." Seminars in Interventional Radiology 35, no. 04 (October 2018): 299–308. http://dx.doi.org/10.1055/s-0038-1673422.

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Анотація:
AbstractImage-guided, minimally invasive, percutaneous thermal ablation of bone metastases has unique advantages compared with surgery or radiation therapy. Thermal ablation of osseous metastases may result in significant pain palliation, prevention of skeletal-related events, and durable local tumor control. This article will describe current thermal ablation techniques utilized to treat bone metastases, summarize contemporary evidence supporting such thermal ablation treatments, and outline an approach to percutaneous ablative treatment.
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3

Hui, Terrence CH, Justin Kwan, and Uei Pua. "Advanced Techniques in the Percutaneous Ablation of Liver Tumours." Diagnostics 11, no. 4 (March 24, 2021): 585. http://dx.doi.org/10.3390/diagnostics11040585.

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Анотація:
Percutaneous ablation is an accepted treatment modality for primary hepatocellular carcinoma (HCC) and liver metastases. The goal of curative ablation is to cause the necrosis of all tumour cells with an adequate margin, akin to surgical resection, while minimising local damage to non-target tissue. Aside from the ablative modality, the proceduralist must decide the most appropriate imaging modality for visualising the tumour and monitoring the ablation zone. The proceduralist may also employ protective measures to minimise injury to non-target organs. This review article discusses the important considerations an interventionalist needs to consider when performing the percutaneous ablation of liver tumours. It covers the different ablative modalities, image guidance, and protective techniques, with an emphasis on new and advanced ablative modalities and adjunctive techniques to optimise results and achieve satisfactory ablation margins.
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4

Alşalaldeh, Mohammad. "A right atrial arteriovenous hemangioma excision under a beating heart after percutaneous catheter cardiac ablation." Cardiovascular Surgery and Interventions 9, no. 2 (July 7, 2022): 129–31. http://dx.doi.org/10.5606/e-cvsi.2022.1272.

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Анотація:
Percutaneous catheter ablation treatment is an interventional treatment method for atrial fibrillation. Herein, we report the case of a 38-year-old male patient who developed a right atrial mass after two percutaneous catheter ablations. The mass was excised by the beating heart technique, later diagnosed as arteriovenous hemangioma. Arteriovenous hemangioma had not been encountered before as a complication of catheter ablation.
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5

Dumolard, Lucile, Julien Ghelfi, Gael Roth, Thomas Decaens, and Zuzana Macek Jilkova. "Percutaneous Ablation-Induced Immunomodulation in Hepatocellular Carcinoma." International Journal of Molecular Sciences 21, no. 12 (June 20, 2020): 4398. http://dx.doi.org/10.3390/ijms21124398.

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Анотація:
Hepatocellular carcinoma (HCC) is one of the most common causes of cancer-related deaths worldwide and its incidence is rising. Percutaneous locoregional therapies, such as radiofrequency ablation and microwave ablation, are widely used as curative treatment options for patients with small HCC, but their effectiveness remains restricted because of the associated high rate of recurrence, occurring in about 70% of patients at five years. These thermal ablation techniques have the particularity to induce immunomodulation by destroying tumours, although this is not sufficient to raise an effective antitumour immune response. Ablative therapies combined with immunotherapies could act synergistically to enhance antitumour immunity. This review aims to understand the different immune changes triggered by radiofrequency ablation and microwave ablation as well as the interest in using immunotherapies in combination with thermal ablation techniques as a tool for complementary immunomodulation.
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6

Gupta, Amit, Besma Musaddaq, Conrad von Stempel, and Shahzad Ilyas. "Percutaneous Renal Ablation." Seminars in Ultrasound, CT and MRI 41, no. 4 (August 2020): 351–56. http://dx.doi.org/10.1053/j.sult.2020.05.004.

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7

He, Xiaofeng, Yueyong Xiao, Xiao Zhang, Peng Du, Xin Zhang, Jie Li, Yunxia An, and Patrick Le Pivert. "Percutaneous Tumor Ablation." Technology in Cancer Research & Treatment 15, no. 4 (July 9, 2016): 597–608. http://dx.doi.org/10.1177/1533034615593855.

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8

Alzubaidi, Sadeer J., Harris Liou, Gia Saini, Nicole Segaran, J. Scott Kriegshauser, Sailendra G. Naidu, Indravadan J. Patel, and Rahmi Oklu. "Percutaneous Image-Guided Ablation of Lung Tumors." Journal of Clinical Medicine 10, no. 24 (December 10, 2021): 5783. http://dx.doi.org/10.3390/jcm10245783.

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Анотація:
Tumors of the lung, including primary cancer and metastases, are notoriously common and difficult to treat. Although surgical resection of lung lesions is often indicated, many conditions disqualify patients from being surgical candidates. Percutaneous image-guided lung ablation is a relatively new set of techniques that offers a promising treatment option for a variety of lung tumors. Although there have been no clinical trials to definitively compare its efficacy to those of traditional treatments, lung ablation is widely practiced and generally accepted to be safe and effective. Especially encouraging results have recently emerged for cryoablation, one of the newer ablative techniques. This article reviews the indications, techniques, contraindications, and complications of percutaneous image-guided ablation of lung tumors with special attention to cryoablation and its recent developments in protocol optimization.
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9

Salahia, Ghali, Sook Cheng Chin, Ian Zealley, and Richard D. White. "The Role of Interventional Radiology in the Management of Pancreatic Pathologies." Journal of Gastrointestinal and Abdominal Radiology 3, no. 01 (January 2020): 099–113. http://dx.doi.org/10.1055/s-0039-3401335.

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Анотація:
AbstractPancreatic pathologies are varied and wide-ranging, and a multidisciplinary approach is essential for effective diagnosis and management. We describe image-guided percutaneous (nonendoscopic) interventions in the management of pancreatic disease, with emphasis on inflammatory and neoplastic pancreatic pathologies and on the transplanted pancreas. Image-guided treatments for the complications of pancreatitis include percutaneous interventions on simple and complex peripancreatic collections, pseudocysts, and fistulas. Vascular interventions predominantly focus on the treatment of pseudoaneurysms, hemorrhagic pseudocysts, and arteriovenous malformations. Emerging ablative techniques for pancreatic cancer are promising and include percutaneous radiofrequency ablation, microwave ablation, irreversible electroporation, and electrochemotherapy. Image-guided interventions on the transplanted pancreas commonly include percutaneous biopsy and drainage in addition to endovascular treatments of vascular complications.
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10

Nimsdorf, F., C. Happel, H. Ackermann, F. Grünwald, and H. Korkusuz. "Percutaneous microwave ablation of benign thyroid nodules." Nuklearmedizin 54, no. 01 (2015): 13–19. http://dx.doi.org/10.3413/nukmed-0678-14-06.

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Анотація:
SummaryAim: Thyroid nodules represent a common clinical issue. Amongst other minimally invasive procedures, percutaneous microwave ablation (MWA) poses a promising new approach. The goal of this retrospective study is to find out if there is a correlation between volume reduction after 3 months and 99mTcuptake reduction of treated thyroid nodules. Patients, methods: 14 patients with 18 nodules were treated with MWA. Pre-ablative assessment included sonographical and functional imaging of the thyroid with 99mTcpertechnetate and 99mTc-MIBI. Additionally, patients underwent thyroid scintigraphy 24 hours after ablation in order to evaluate the impact of the treatment on a functional level and to ensure sufficient ablation of the targeted area. At a 3-month follow-up, ultrasound examination was performed to assess nodular volume reduction. Results: Mean relative nodular volume reduction after three months was 55.4 ± 17.9% (p < 0.05). 99mTcuptake 24 hours after treatment was 45.2 ± 31.9% (99mTc-MIBI) and 35.7 ± 20.3% (99mTcpertechnetate) lower than prior to ablation (p < 0.05). Correlating reduction of volume and 99mTc-uptake, Pearson's r was 0.41 (p < 0.05) for nodules imaged with 99mTc-MIBI and –0.98 (p < 0.05) for 99mTc-pertechnetate. According to scintigraphy 99.6 ± 22.6% of the determined target area could be successfully ablated. Conclusions: MWA can be considered as an efficient, low-risk and convenient new approach to the treatment of benign thyroid nodules. Furthermore, scintigraphy seems to serve as a potential prognostic tool for the later morphological outcome, allowing rapid evaluation of the targeted area in post-ablative examination.
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Більше джерел

Дисертації з теми "Percutaneous ablation"

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Wieland, Ines. "Development of a 1.8mm percutaneous applicator with closed cycle cooking for microwave tumour ablation." Thesis, University of Bath, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.519020.

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2

Kariniemi, J. (Juho). "Magnetic resonance imaging-guided percutaneous abdominal interventions." Doctoral thesis, Oulun yliopisto, 2011. http://urn.fi/urn:isbn:9789514295492.

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Анотація:
Abstract Magnetic resonance imaging (MRI) provides high contrast and spatial resolution images in arbitrarily chosen plane without ionizing radiation. These valuable features make it an attractive technique for guiding percutaneous interventional procedures. The purpose of this study was to develop percutaneous abdominal diagnostic and therapeutic procedures in MRI surroundings by evaluating the feasibility, safety and clinical results of specific interventional procedures. The safety and accuracy of MRI-guided abdominal biopsy was evaluated by performing MRI-guided biopsy on 31 patients who were not amenable for an ultrasound-guided biopsy. The locations of the lesions were liver, pancreas, lymph node, retroperitoneal mass, adrenal gland, and spleen. Fine-needle aspiration (FNA) biopsy was performed on all 31 patients; 18 patients underwent both FNA biopsy and cutting needle core biopsy. The sensitivity, specificity and accuracy of FNA and core biopsies were 71, 100 and 81%, and 90, 100 and 94%, respectively. No immediate or late complications occurred. The feasibility and safety of MRI-guided percutaneous drainage of pancreatic fluid collections was assessed by performing ten percutaneous drainages under MRI-guidance. Five of the patients had symptomatic pseudocysts and five had pancreatic abscesses. All procedures were performed with an MRI-compatible drainage kit using the Seldinger technique. All drainage catheters could be successfully placed into the pancreatic fluid collections under MRI-guidance with a mean procedure time of 44 minutes. No immediate complications occurred. The feasibility and safety of MRI-guided percutaneous nephrostomy was evaluated by performing eight nephrostomies with MRI-guidance. The degree of the dilatation of the renal collecting system varied from minimal to severe. All procedures were performed solely under MRI guidance with MRI-compatible instruments. Seven out of eight nephrostomies were successfully performed under MRI guidance; nephrostomy catheter could not be placed in a nondilated system. The mean procedure time was 26 minutes. No major complications occurred during the procedures or follow-up. The safety and effectiveness of MRI-guided percutaneous laser ablation for the treatment of small renal cell carcinoma (RCC) was assessed by treating eight patients with ten tumors with percutaneous MRI-guided laser ablation. All tumors were biopsy-proven RCCs. One to four laser fibers were used per tumor and the tumors were ablated under near real-time MRI control. All but one tumor were successfully ablated in one session. One complication, a myocardial infarction, occurred; all other patients tolerated the procedure well. No local recurrence was discovered during the follow-up with a mean time of 20 months
Tiivistelmä Magneettikuvauksella elimistön kudoksista ja sairauksista saadaan tarkkaa tietoa missä tahansa kuvaussuunnassa ilman ionisoivaa säteilyä. Näiden ominaisuuksiensa takia magneettikuvaus on houkutteleva menetelmä myös kuvantaohjattujen perkutaanisten toimenpiteiden tekemiseen. Tämän tutkimuksen tavoitteena oli kehittää perkutaanisia vatsan magneettiohjattuja toimenpiteitä. Tämä tehtiin arvioimalla magneettikuvauksen soveltuvuutta, turvallisuutta ja kliinisiä tuloksia erilaisten diagnostisten ja terapeuttisten toimenpiteiden ohjaamisessa. Magneettiohjattujen vatsan neulanäytteiden turvallisuutta ja tarkkuutta arvioitiin 31 potilaalla, joille ei voitu tehdä ultraääniohjattua biopsiaa. Näytteitä otettiin maksasta, haimasta, imusolmukkeista, retroperitoneaalisista kasvaimista, lisämunuaisista ja pernasta. Kaikilta 31 potilaalta otettiin solunäyte, 18 potilaalta otettiin lisäksi kudosnäyte. Solunäytteiden sensitiivisyys oli 71 %, spesifisyys 100 % ja tarkkuus 90 %; kudosnäytteissä vastaavat luvut olivat 90 %, 100 % ja 94 %. Neulanäytteiden otosta ei aiheutunut yhtään komplikaatiota. Magneettiohjauksen soveltuvuutta ja turvallisuutta haiman nestekertymien perkutaanisessa dreneerauksessa arvioitiin kymmenellä potilaalla, joista puolella oli oireileva haiman pseudokysta ja puolella haiman absessi. Kaikki kanavoinnit tehtiin Seldingerin tekniikalla käyttäen magneettiyhteensopivia toimenpidevälineitä. Kaikkien nestekertymien dreneeraus magneettiohjatusti onnistui ilman välittömiä komplikaatioita ja keskimäärin toimenpiteeseen kului aikaa 44 minuuttia. Magneettiohjauksen soveltuvuutta ja turvallisuutta punktionefrostomian tekemiseen tutkittiin kahdeksalla potilaalla, joilla hydronefroosin aste vaihteli vähäisestä vaikeaan. Kaikki toimenpiteet tehtiin magneettiyhteensopivilla toimenpidevälineillä. Magneettiohjatut punktionefrostomiat onnistuivat lukuun ottamatta yhtä potilasta, jolla munuaispikareissa oli vähäistä laajentumaa. Keskimääräinen toimenpideaika oli 26 minuuttia eikä yhtään hoitoa vaativaa komplikaatiota tapahtunut. Magneettiohjatun perkutaanisen munuaissyövän laserpolton turvallisuutta ja tehokkuutta tutkittiin kahdeksalla potilaalla, joilla oli yhteensä kymmenen kasvainta. Kaikki kasvaimet olivat biopsialla varmennettuja munuaissyöpiä. Laserpoltot tehtiin lähes reaaliaikaisessa magneettikuvauskontrollissa käyttäen yhdestä neljään laserkuitua jokaista kasvainta kohden. Yhtä lukuun ottamatta kaikkien kasvainten poltto onnistui yhdellä hoitokerralla. Yhdellä potilaalla hoitoa komplisoi sydäninfarkti, mutta muut sietivät hoidon hyvin. Potilaita seurattiin hoidon jälkeen keskimäärin 20 kuukautta eikä seurannassa todettu yhtään taudin uusiutumaa
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3

Corbin, Nadège. "Interventional magnetic resonance elastography dedicated to the monitoring of percutaneous thermal ablations." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAD047/document.

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Анотація:
Les ablations thermiques percutanées guidées par IRM sont actuellement contrôlées en temps réel grâce à la thermométrie IRM. Cependant, aucune information directement associée aux changement de propriétés intrinsèques du tissu n’est disponible pendant la procédure. Ces travaux offrent la possibilité d’un monitorage plus complet des ablations thermiques grâce à l’Elastographie par Résonance Magnétique (ERM) combinée à la thermométrie IRM. Le système proposé est composé d’un excitateur à aiguille, d’une séquence d’encodage du mouvement synchronisée sur la respiration et d’une méthode de reconstruction en temps réel de carte d’élasticité et de température. Les changements d’élasticité et de température se produisant lors d’ablations thermiques par laser ont été mesurés in vivo en temps réel avec succès grâce à ce système. Une nouvelle méthode de traitement des données ERM sans reconstruction d’images de phase est aussi proposée afin de s'affranchir d'étapes conventionnelles fastidieuses
MR-guided percutaneous thermal ablations are currently monitored by MR thermometry. However, no information related to intrinsic property changes of the tissue is available during the procedure. The feasibility of monitoring in vivo thermal ablations by simultaneous Magnetic Resonance Elastography (MRE) and MR-thermometry is demonstrated in this work. The interventional MRE system includes a needle MRE driver, a respiratory triggered gradient-echo sequence with motion encoding, and an online reconstruction method that provides elasticity and temperature measurements in real-time. Changes in elasticity and temperature occurring during laser thermal ablations were successfully measured in vivo thanks to this interventional MRE system. An innovative method for MRE data processing without phase image reconstruction is also proposed in order to avoid challenging steps of the conventional process
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4

BIONDETTI, PIERPAOLO. "THE USE OF THE CONE-BEAM COMPUTED TOMOGRAPHY FUSION IMAGING AND OF DEDICATED SOFTWARE FOR ABLATION VOLUME PREDICTION IN PERCUTANEOUS MICROWAVE ABLATION OF LIVER PRIMARY TUMORS." Doctoral thesis, Università degli Studi di Milano, 2022. https://hdl.handle.net/2434/947948.

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Анотація:
Purpose To evaluate the clinical impact of a protocol for image-guided percutaneous thermal ablation of primary liver tumors that involves the use of cone-beam computed tomography (CBCT), fusion imaging and of a software for ablation volume prediction. Materials and Methods This study included 80 consecutive patients with 101 hepatocellular carcinomas (HCCs) treated with image-guided percutaneous microwave ablation (MWA) between 01/202106/ 2022 in a single institution: Fondazione IRCCS Cà Granda – Ospedale Maggiore Policlinico, Milan, Italy. Patients were divided in 2 groups: Group A, treated following a specific protocol which involved the use of CBCT, fusion imaging and of a software for ablation volume prediction (41 HCCs in 37 patients), and Group B, treated with standard ultrasound (US) guidance (60 HCCs in 43 patients). Data regarding patients, tumors and procedures were registered. Images from follow-up CT/MR exams performed at 1, 3 and 6 months were reviewed to assess outcomes as residual disease, local tumor progression, intrahepatic distant recurrence, local and overall disease survival rates. Follow-up at 1, 3 and 6 months in group A and B was available in 100%, 57%, 38% and in 100%, 49% and 35% of cases respectively. Ablation response at 1 month was evaluated according to the Modified Response Evaluation Criteria In Solid Tumours (mRECIST) for HCC. A comparison of baseline variables and outcome rates between groups A and B was performed. For outcomes at 1 month, propensity score weighting was then performed performed to control for confounders in age, tumor location, size, and recurrence Results Among all baseline variables, group A and B only differed regarding age, new-vs-residual target tumor rates (higher in group A) and number of subcapsular or perivascular tumors (higher in group B). Among group A patients the protocol led to repositioning the MWA antenna in 49% of cases. There was a significant difference in local tumor response at 1 month between the groups in the form of residual disease rates and according to mRECIST. Cumulative local tumor progression rates at 3 and 6 months or in the intrahepatic distant recurrence rates at 1, 3 and 6 months showed no statistically significant differences, probably due to the limited number of cases. Local and overall disease-free survival similarly showed statistically significant differences at 1 month only. Among all variables, logistic regression after propensity score weighting demonstrated a unique protective effect of belonging to group A against the presence of residual disease at 1 month. Conclusions The use of a protocol that includes CBCT fusion imaging and ablation volume prediction software during US-guided percutaneous thermal ablation of liver HCCs provided a better tumor local control 1 month after procedure, lowering residual disease. Further studies with larger population and longer follow-up time are needed to confirm outcome data at 1 month, better define later outcomes, and eventually identify the subgroups of patients who could benefit more from the protocol application.
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PETROLATI, ALESSANDRA. "La sede non influenza la probabilità di ablazione completa precoce, di recidiva locale e di sopravvivenza in 164 pazienti con 182 piccoli epatocarcinomi (< 4 cm) trattati con terapia laser per cutanea: analisi retrospettiva." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2009. http://hdl.handle.net/2108/1132.

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Анотація:
L’ablazione laser percutanea (PLA) è stata proposta come trattamento efficace nell’ottenere un’ablazione completa di piccoli epatocarcinoma (<4cm). Tuttavia, non ci sono dati riguardo l’efficacia della PLA nel trattamento di lesioni cosiddette ad “alto rischio”. Obiettivo. Valutare se le cosiddette lesioni a rischio (vicine a strutture vitali) hanno un impatto sulla probabilità di ablazione completa, di recidiva locale e di sopravvivenza complessiva in pazienti con piccolo HCC trattato con PLA ecoguidata Materiali e Metodi. 182 piccoli HCC in 164 pazienti cirrotici sono stati trattati con PLA sotto guida ecografica tra il 1996 ed il 2008. Centosei pazienti (52M/54F; età media 69 anni) avevano 116 HCC (diametro medio 2.7 cm ; range 0.8- 4.0 cm ), sia con crescita esofitica o situati a meno di 1cm dalla capsula epatica o da strutture vitali (Gruppo ad alto rischio). Cinquantotto pazienti (38M/20F, età 68anni) avevano 66 HCC (diametro medio 2.4 cm ; range 0.8- 4.8 cm ) situati in sedi non ad alto rischio (gruppo a basso rischio). Curve di sopravvivenza sono state calcolate mediante lo stimatore di Kaplan-Meier e confrontate mediante il Log-Rank test. L’analisi multivariata è stata condotta mediante il modello di Cox. Risultati. L’ablazione completa iniziale non ha mlostrato differnze significative nei due gruppi ( 96.5 % vs 92.4%) (p= .497). La mediana di follow-up complessivoè stata di 81 mesi. Per I pazienti che hanno ottenuto un’ablazione completa, il tempo mediano di recidiva locale stimato è stato di 84 mesi nel gruppo ad alto rischio e di 134 in quello a basso rischio. La sede non ha mostrato un effetto significativo sulla probabilità di recidiva locale (p= .53) sia all’aalisi univariata che multivariata. L’analisi secondo il modello di Cox ha mostrato che il diametro massimo della lesione è l’unico fattore predittivo di recidiva locale (p= .01). la sopravvivenza complessiva non differisce in maniera significativa tra i due gruppi (p= .374) e la sopravvivenza a 1, 3- e 5-anni è stata dello 0.90 (s.e.=0.029), 0.54 (s.e.=0.053) e 0.33 (s.e.=0.054) nel gruppo ad alto rischio e dello 0.95 (s.e.=0.030), 0.66 (s.e.=0.070) e 0.33 (s.e.=0.074) nel gruppo a basso rischio. All’analisi multivariata la sede non ha mostrato un impatto sulla sopravvivenza statisticamente significativo. Conclusioni. La sede ad alto rischio di piccolo epatocarcinomi trattati con PLA sotto guida ecografica non influenza in maniera significativa la sopravvivenza ed il tempo di recidiva locale di questi pazienti.
Background. Percutaneous laser ablation (PLA) has been proposed as an active treatment in patients with hepatocellular carcinoma with a significant activity in inducing complete ablation in HCC <4cm,. However, to date no data reported using PLA in treating lesions at high-risk located. Aim. To evaluate if the so-called high-risk location (e.g. close to vital structures) affects initial complete ablation rate, local recurrence rate and overall survival in cirrhotic patients with small hepatocellular carcinoma (HCC) treated with US-guided percutaneous laser ablation (LA) Materials and Methods. 182 small HCC nodules in 164 cirrhotic patients were treated by US-guided PLA (USg-PLA) between 1996 and 2008. One hundred six patients (52M/54F; mean age 69 yrs) had 116 HCC nodules (mean diameter 2.7 cm ; range 0.8- 4.0 cm ), either with exophytic growth or located <1cm from the liver edge or vital structures (high-risk group). Fifty eight patients (38M/20F, age 68yrs) had 66 HCC tumors (mean diameter 2.4 cm ; range 0.8- 4.8 cm ) located in not high-risk sites (low-risk group). Survival curves obtained via the Kaplan-Meier method were compared using the Log-Rank test. Multivariate analysis was based on Cox model. Results. The initial complete ablation did not significantly differ between the two groups ( 96.5 % vs 92.4%) (p= .497). The overall median follow-up was 81 months. For patients who achieved a complete response, the estimated local recurrence median time was 84 months in the low-risk group and 132 months in the high-risk group. Location did not significantly affect local recurrence free survival (p= .53) at both univariate and multivariate analysys after adjusting for diameter and tumour histology. Results by Cox model suggest the maximum diameter as the only significant predictor of local recurrence (p= .01). The overall survival did not differ significantly between the two groups (p= .374) and the 1-, 3- and 5-yr survival probability was 0.90 (s.e.=0.029), 0.54 (s.e.=0.053) and 0.33 (s.e.=0.054) in the high-risk group and 0.95 (s.e.=0.030), 0.66 (s.e.=0.070) and 0.33 (s.e.=0.074) in the low-risk one. At multivariate analysis location turned out not to be a significant predictor of overall survival. Conclusion. High-risk location of small HCC nodules treated with USg-PLA seems not to affect complete tumor ablation rate, local tumour recurrence rate and patients’ survival.
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ODDO, SILVIA. "Percutaneous thermal ablations of benign thyroid nodules." Doctoral thesis, Università degli studi di Genova, 2018. http://hdl.handle.net/11567/930400.

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Forgione, Kasey-Lee. "PET/CT-guided percutaneous liver biopsies or ablations using 20-second PET acquisitions." Thesis, Boston University, 2012. https://hdl.handle.net/2144/12386.

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Thesis (M.A.)--Boston University PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you.
Purpose: To determine the targeting accuracy of 20-second breath-hold PET scans versus up to 180-second summed, breath-hold PET scans during PET/CT- guided IR procedures for FOG-avid liver lesions. If feasible, single breath-hold PET scans may decrease scan times during PET/CT-guided procedures and improve PET/CT image co-registration for targets subject to respiratory motion. Materials and Methods: Ten patients with 13 liver lesions visible on FOG PET and unenhanced CT underwent PET/CT-guided liver biopsy or tumor ablation using respiratory-bellows-monitored, breath-hold PET and CT acquisitions. Nine 20-second, breath-hold PET scans and one breath-hold CT scan were obtained for each planning PET/CT scan. 20, 40, 60, and 180-second PET scans were reconstructed for each patient. Four interventional radiology readers reviewed 40 PET datasets followed by 10 CT datasets, both in random order, and marked the epicenter of the tumors using OsiriX PACS DICOM Viewer. 3-dimensional differences (distance errors) in target localization for each PET dataset compared to 180-second PET or CT, as gold standards, were analyzed with multiple regression models. Tumor sizes and FOG-avidities were correlated with magnitudes of targeting errors using Pearson correlation analysis. Statistical tests were two-sided; P < .05 was considered significant. Results: 20-second PET targeting errors compared to 180-second PET ranged from .7 - 153 mm (mean 19.2 mm) and were not significantly different than 40 or 60-second PET (P= .83 &.60). 20-second PET targeting errors compared to CT ranged from 1.4-468 mm (mean 37.3 mm) and were not statistically different than 40, 60, or 3 minute PET (P= .88 , .88, & .61 ). Overall, PET targeting errors were inversely correlated with tumor size (P< .001) and FOG avidity (P< .001 ). Conclusion: Targeting accuracy using 20-second breath-hold PET is comparable to longer PET acquisitions up to 180-seconds. PET targeting errors are larger for small tumors or tumors with low FOG avidity regardless of PET acquisition time. PET/CT scans for guiding percutaneous liver procedures are feasible in two breath-holds, one for CT and one for PET acquisitions, without compromising accuracy.
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Roesler, Martin. "Experimentelle Evaluation der Laser-induzierten Thermotherapie (LITT) an ex-vivo Rinderleber unter Verwendung zweier Kühlmedien." Doctoral thesis, Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité, 2005. http://dx.doi.org/10.18452/15312.

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ZIEL: In der vorliegenden Studie wurde die Effektivität und Sicherheit der Applikation von 90% Ethanol als Kühlmittel evaluiert METHODEN: Wir benutzten einen Mikrokatheter mit einem äußeren Durchmesser von 1,8 mm, welchen wir in der Rinderleber platzierten. Verbunden mit dem Katheter war ein Dornier Diffusor-Tip H6111-T3 angeschlossen an einen Dornier Medilas Fibertom 5100 Laser. Es wurden zwei Kühlmedien verwendet, physiologische Kochsalzlösung und 90% Ethanol, beide mit einer Flussgeschwindigkeit von 0,75 ml/min und 1,5 ml/min. Fünfzehn Minuten Laserbetriebszeit und verschiedene Wattstärken wurden verwendet. Die Koagulationsgröße wurde makroskopisch ausgewertet. ERGEBNISS: Es konnte kein Unterschied im radialen Durchmesser und in der Form hinsichtlich des verwendeten Kühlmittels gefunden werden. In der Gruppe mit dem hohen Kühlmittelfluss wurde eine Verlängerung des axialen Durchmessers festgestellt. Weiterhin führte die Verwendung von Ethanol zu einer erhöhten Rate an zerstörten Dornier Diffusor-Tips. SCHLUSSFOLGERUNG: Unter diesen technischen Vorraussetzungen wird es keinen Vorteil für die Patienten geben durch die Verwendung von Ethanol. Für bessere Ergebnisse ist ein neues Lichtleitersystem notwendig, welches resistent gegen die Ethanolwirkung ist.
Laser-induced thermotherapy of ex-vivo cow liver with open microcatheter system: comparison of two used cooling agents PURPOSE: We evaluated the efficiency and safety of 90% Ethanol as a cooling agent in Laser-induced thermotherapy of the liver. MATERIAL AND METHODS: We used a Microcatheter with an outer diameter of 1.8 mm which was placed in ex-vivo cow liver. Connected to the microcather was a Dornier Diffusor-Tip H6111-T3 coupled to a Dornier Medilas Fibertom 5100 laser. We compared two types of cooling agents, physiological NaCl solution and 90% Ethanol, both with a flow of 0,75 ml/min and 1,5 ml/min. Fifteen minutes of ablation time and different laser powers were used. The lesions size was examined macroscopically. RESULTS: We were not able to find any difference in form or diameter of the ablated liver depending on the usage of NaCL and Ethanol as cooling agent. However utilization of Ethanol yielded a larger length of ablated liver in the high flow group. Furthermore usage of Ethanol results in a higher rate of destructed Dornier Diffusor-Tips. CONCLUSIONS: Under the present technical conditions there will be no benefit from the usage of Ethanol as cooling agent. For better results a new light guide system is needed, which is resistent to the effect of Ethanol.
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Chen, Yi-Wen, and 陳憶雯. "Treatment Efficacy and Safety of Ultrasound-Guided Percutaneous Radiofrequency Ablation for Benign Thyroid Nodules." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/e8gvf6.

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Tsai, Yu-jou, and 蔡毓洲. "Cost-effectiveness Analysis between Percutaneous Radiofrequency Ablation and Ethanol Injection for Very Early Hepatocellular Carcinoma." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/ay9y6a.

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碩士
國立中山大學
醫務管理研究所
97
Introduction: Most literatures researched radiofrequency ablation (RFA) for early hepatocellular carcinoma (HCC) defined the early tumor size as 3cm or less. However, detection rate of HCC smaller than 2 cm became increasing since high risk patients had received regular screening and the imaging techniques has been much improved. Whether RFA or percutaneous ethanol injection (PEI) is better for a patient with such a small HCC is still controversial. Methods: We retrospectively obtained patients with single HCC 2 cm in diameter or smaller from the computerized medical records database in a local teaching hospital located at southern Taiwan, diagnosed during January 1, 2002 to April 30, 2008. Those patients received RFA (RFA group) or PEI (PEI group) as the first-line nonsurgical treatments were enrolled for further analysis. We compared baseline characteristics of RFA and PEI groups, including gender, age, possible risk factors of recurrence, and prognostic factors. Then, we analyzed recurrent rate, time to recurrence, survival rate, complication rate, mean cost of each treatment, and hospital stay of RFA and PEI groups. Results: There were 32 patients qualified for the study design, including 22 in PEI group：13 males and 9 females with mean age was 63.73 years; and 10 in RFA group：7 males and 3 females with mea age was 58.30 years。No statistically significant differences between RFA and PEI groups were observed with respect to baseline characteristics. Nevertheless, there was significant difference between these two groups with respect to mean hospital stay (p=0.007) and mean cost (p＜0.001): mean cost of PEI was NTD $16934.7; mean cost of RFA was NTD $51677.6, the difference was NTD $34732.9. There was no difference respect to complication rate, recurrent rate, time to recurrence and overall survival rate between RFA and PEI groups. Conclusion: For patients with single HCC 2 cm in diameter or smaller (i.e. very early HCC), we concluded that: if under similar basic background, the cost of RFA was much higher than that of PEI, but no difference in the complication rate, recurrent rate, time to recurrence and overall survival rate between these two treatment.
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Книги з теми "Percutaneous ablation"

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Vogl, Thomas J., Thomas K. Helmberger, Martin G. Mack, and Maximilian F. Reiser, eds. Percutaneous Tumor Ablation in Medical Radiology. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-68250-9.

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Vogl, Thomas J., Thomas K. Helmberger, Martin G. Mack, and Maximilian F. Reiser, eds. Percutaneous Tumor Ablation in Medical Radiology. Boston, MA: Springer US, 2006. http://dx.doi.org/10.1007/978-0-387-36891-7.

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Hong, Kelvin. Percutaneous tumor ablation: Strategies and techniques. New York: Thieme, 2011.

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Percutaneous tumor ablation: Strategies and techniques. New York: Thieme, 2010.

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Helmberger, Thomas, Martin G. Mack, Maximilian F. Reiser, and Thomas J. Vogl. Percutaneous Tumor Ablation in Medical Radiology. Springer London, Limited, 2007.

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Mack, M. G., T. J. Vogl, T. K. Helmberger, and M. F. Reiser. Percutaneous Tumor Ablation in Medical Radiology. Springer, 2010.

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(Editor), T. J. Vogl, T. K. Helmberger (Editor), M. G. Mack (Editor), and M. F. Reiser (Editor), eds. Percutaneous Tumor Ablation in Medical Radiology (Medical Radiology / Diagnostic Imaging). Springer, 2007.

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Wolf, Farrah J., and Jason Iannuccilli. Percutaneous Thermal Ablation: Hydrodissection and Balloon Displacement to Protect Adjacent Non-Target Critical Structures. Edited by S. Lowell Kahn, Bulent Arslan, and Abdulrahman Masrani. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199986071.003.0071.

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This chapter describes techniques that may be utilized to protect soft tissue structures and vessels that lie less than 1 cm from the planned ablation zone from thermal injury. Hydrodissection with dextrose 5% in water combined with non-ionic contrast material may be used as a means of providing mechanical displacement. Alternatively, an angioplasty balloon inflated with air may be used to provide both physical displacement and thermal insulation. This chapter provides an overview of the percutaneous image-guided thermal ablation technique as well as clinical examples, including microwave ablation of a renal cell carcinoma and radiofrequency ablation of a hepatocellular carcinoma, utilizing hydrodissection and balloon displacement techniques.
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Kainth, Daraspreet Singh, Karanpal Singh Dhaliwal, and David W. Polly. Sacroiliac Joint Fusion: Percutaneous and Open. Edited by Mehul J. Desai. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199350940.003.0020.

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Sacroiliac joint (SIJ) pain is the source of back pain in up to 25% of patients presenting with back pain. There is significant individual variation in the anatomy of the sacrum and the lumbosacral junction. SIJ pain is diagnosed with the history and physical examination. SIJ injection of a local anesthetic along with steroids is often used to confirm the diagnosis. Nonoperative treatment includes nonsteroidal anti-inflammatories, physical therapy, joint manipulation therapies, and SIJ injections. SIJ pain can also be successfully treated with radiofrequency ablation in some patients. Surgical treatment includes the open anterior sacroiliac joint fusion technique and minimally invasive techniques. The benefits of minimally invasive SIJ fusion versus open surgery include less blood loss, decreased surgical time, and shorter hospital stay. Further studies are needed to determine the long-term durability of the minimally invasive surgical techniques.
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Bansal, Anshuman, and Fereidoun Abtin. Taming Cryoablation for Lung Tumors. Edited by S. Lowell Kahn, Bulent Arslan, and Abdulrahman Masrani. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199986071.003.0072.

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This chapter details the indications, uses, and techniques of using percutaneous cryoablation to treat lung tumors. The chapter reviews the role of ablative therapy for primary lung cancers as well as metastatic disease to the lung. It reviews the basic physical principles of cryoablation and the advantages of percutaneous cryoablation compared to other percutaneous heat-based ablative modalities. Patient selection criteria and post-ablation follow-up protocols are discussed. The chapter reviews procedural considerations, including choice of anesthesia, patient positioning, probe trajectory, and post-procedural recovery. It also details techniques that can be used to minimize and treat complications as well as tips for treating more challenging lesions.
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Частини книг з теми "Percutaneous ablation"

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Qian, Guojun, Jinglei Zhang, and Feng Shen. "Percutaneous Ablation." In Intrahepatic Cholangiocarcinoma, 123–34. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-22258-1_9.

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Livraghi, Tito, and Maria Franca Meloni. "Percutaneous Ethanol Injection Therapy." In Tumor Ablation, 195–204. New York, NY: Springer New York, 2005. http://dx.doi.org/10.1007/0-387-28674-8_15.

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Ha, Eun Ju, and Jung Hwan Baek. "Percutaneous Radiofrequency Ablation." In Minimally Invasive Therapies for Endocrine Neck Diseases, 85–96. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-20065-1_7.

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Fornage, Bruno D., and Beth S. Edeiken. "Percutaneous Ablation of Breast Tumors." In Tumor Ablation, 428–39. New York, NY: Springer New York, 2005. http://dx.doi.org/10.1007/0-387-28674-8_36.

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Helmberger, Thomas K. "Radiofrequency Ablation." In Percutaneous Tumor Ablation in Medical Radiology, 7–20. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-36891-7_2.

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Boss, Andreas, Damian Dupuy, and Philippe L. Pereira. "Microwave Ablation." In Percutaneous Tumor Ablation in Medical Radiology, 21–28. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-36891-7_3.

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Mack, Martin G., and Thomas J. Vogl. "Laser Ablation." In Percutaneous Tumor Ablation in Medical Radiology, 29–32. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-36891-7_4.

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Zhou, Zhongguo, and Minshan Chen. "Percutaneous Radiofrequency Thermal Ablation." In Radiofrequency Ablation for Small Hepatocellular Carcinoma, 39–46. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-7258-7_5.

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Shah, Dipen, Pierre Jais, and Michel Haissaguerre. "Percutaneous Atrial Catheter Ablation." In Innovative Management of Atrial Fibrillation, 93–112. Malden, Massachusetts, USA: Blackwell Publishing, 2007. http://dx.doi.org/10.1002/9780470994818.ch7.

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Lubienski, Andreas, Martin Simon, and Thomas K. Helmberger. "Percutaneous Alcohol Instillation." In Percutaneous Tumor Ablation in Medical Radiology, 123–27. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-36891-7_13.

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Тези доповідей конференцій з теми "Percutaneous ablation"

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Ryan, Thomas P., Jonathan Kwok, and Robert J. Beetel. "Simulations of percutaneous RF ablation systems." In Biomedical Optics 2003, edited by Thomas P. Ryan. SPIE, 2003. http://dx.doi.org/10.1117/12.476627.

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McNichols, Roger J., Ashok Gowda, Kamran Ahrar, R. J. Stafford, Roger E. Price, and John D. Hazle. "Feasibility of percutaneous vertebroplasty with MR-guided laser ablation." In Biomedical Optics 2004, edited by Kenneth E. Bartels, Lawrence S. Bass, Werner T. W. de Riese, Kenton W. Gregory, Henry Hirschberg, Abraham Katzir, Nikiforos Kollias, et al. SPIE, 2004. http://dx.doi.org/10.1117/12.528468.

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Reimann, Carolin, Margarita Puentes, Holger Maune, Rolf Jakoby, Babak Bazrafshan, Frank Hubner, and Thomas J. Vogl. "A cylindrical shaped theranostic applicator for percutaneous microwave ablation." In 2017 First IEEE MTT-S International Microwave Bio Conference (IMBIOC). IEEE, 2017. http://dx.doi.org/10.1109/imbioc.2017.7965791.

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Alghamdi, Ibrahim Abulaziz, Zia Zergham, Mohammed Haytham Mawardi, Salah Saleh Kary, and Majed Ahmed Ashour. "Combined Transarterial Chemoembolization and Percutaneous Ablation: A Single-Center Experience." In PAIRS Annual Meeting. Thieme Medical and Scientific Publishers Pvt. Ltd., 2018. http://dx.doi.org/10.1055/s-0041-1730670.

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Pinnock, Mark A., Yipeng Hu, Steve Bandula, and Dean C. Barratt. "End-to-end forecasting of needle trajectory in percutaneous ablation." In Image-Guided Procedures, Robotic Interventions, and Modeling, edited by Cristian A. Linte and Jeffrey H. Siewerdsen. SPIE, 2021. http://dx.doi.org/10.1117/12.2580712.

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Kang, Sungjoon, and Sujata Bhatia. "Analysis of Deaths Reported for Percutaneous Cardiac Ablation Catheter Devices." In The 8th World Congress on New Technologies. Avestia Publishing, 2022. http://dx.doi.org/10.11159/icbb22.002.

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Wang, Haoyu, Hongrui Yi, Jie Liu, and Lixu Gu. "Integrated Treatment Planning in Percutaneous Microwave Ablation of Lung Tumors." In 2022 44th Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC). IEEE, 2022. http://dx.doi.org/10.1109/embc48229.2022.9871915.

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feng, hua S., and nie zhoushan. "Application Of Percutaneous Argon-Helium Ablation For Non-Small Cell Lung Cancer." In American Thoracic Society 2011 International Conference, May 13-18, 2011 • Denver Colorado. American Thoracic Society, 2011. http://dx.doi.org/10.1164/ajrccm-conference.2011.183.1_meetingabstracts.a3053.

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Domiziana, Santucci, Faiella Eliodoro, Pacella Giuseppina, Grasso Rosario Francesco, and Beomonte Zobel Bruno. "Our Experience in Percutaneous Ablative Treatment of Renal T1a E T1b Lesions: Results from 90 Patients Treated with Microwave Ablation, Radiofrequency Ablation and Cryoablation." In PAIRS Annual Meeting. Thieme Medical and Scientific Publishers Pvt. Ltd., 2019. http://dx.doi.org/10.1055/s-0041-1730525.

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Keshava, Krishna N., Benjamin B. Kimia, Madeleine Cook, Damian E. Dupuy, Scott A. Collins, and Derek Merck. "A methodology to analyze treatment zone geometry and variability of percutaneous thermal ablation." In SPIE BiOS, edited by Thomas P. Ryan. SPIE, 2015. http://dx.doi.org/10.1117/12.2082834.

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Звіти організацій з теми "Percutaneous ablation"

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Zhang, Jian-Hua, Yu-Fei Fu, and Jing-Ya Wang. Percutaneous ablation for adrenal metastases: a systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, July 2022. http://dx.doi.org/10.37766/inplasy2022.7.0032.

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Huang, Yi-Yang, Hong Cheng, Xin-JIan Xu, and Xiang-Zhong Huang. Laparoscopic adrenalectomy versus percutaneous ablation for aldosterone‑producing adenoma: a meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, April 2021. http://dx.doi.org/10.37766/inplasy2021.4.0006.

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Zhang, Feng-Qin, Jian Sun, and Xiao-Jie Gu. Repeat resection versus percutaneous ablation for recurrent hepatocellular carcinoma: a meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, April 2022. http://dx.doi.org/10.37766/inplasy2022.4.0117.

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Chen, Dongjie, Man Zhao, and Xiaoyong Xiang. Percutaneous local tumor ablation versus Stereotactic body radiotherapy for early-stage non-small cell lung cancer: a systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, June 2021. http://dx.doi.org/10.37766/inplasy2021.6.0099.

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