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radio-frequency ablation

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https://www.readbyqxmd.com/read/28226451/non-invasive-imaging-of-ventricular-activation-during-pacing-and-arrhythmia-methods-and-validation
#1
Long Yu, Steven Pogwizd, Bin He, Long Yu, Steven Pogwizd, Bin He, Bin He, Steven Pogwizd, Long Yu
Cardiovascular disease continued to be a leading killer world widely. Each year, about 400,000 cases of sudden cardiac arrest are reported in the U.S. alone. Clinically, radio-frequency ablative procedure has become widely applied in the treatment of ventricular arrhythmia. Non-invasive approaches have been demonstrated to be able to provide important information on the arrhythmogenesis and potentially assist in the clinical practice. In this work, we develop and validate a novel temporal sparse based imaging method, Cardiac Electrical Sparse Imaging (CESI)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28188362/comparing-renal-function-preservation-after-laparoscopic-radio-frequency-ablation-assisted-tumor-enucleation-and-laparoscopic-partial-nephrectomy-for-clinical-t1a-renal-tumor-using-a-3d-parenchyma-measurement-system
#2
Liangsong Zhu, Guangyu Wu, Jiwei Huang, Jianfeng Wang, Ruiyun Zhang, Wen Kong, Wei Xue, Yiran Huang, Yonghui Chen, Jin Zhang
PURPOSE: To compare the renal function preservation between laparoscopic radio frequency ablation assisted tumor enucleation and laparoscopic partial nephrectomy. METHODS: Data were analyzed from 246 patients who underwent laparoscopic radio frequency ablation assisted tumor enucleation and laparoscopic partial nephrectomy for solitary cT1a renal cell carcinoma from January 2013 to July 2015. To reduce the intergroup difference, we used a 1:1 propensity matching analysis...
February 10, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28171697/eus-guided-tumor-ablation
#3
REVIEW
Sundeep Lakhtakia, Dong-Wan Seo
Real-time guidance of needle advancement has transformed Endoscopic Ultrasound from a diagnostic to an interventional procedure. EUS guided fine needle puncture has application in various interventional procedures (drainage of pseudocyst, biliary intervention, and injection of drugs). Celiac plexus or ganglion neurolysis for pain control is the major current EUS-guided fine-needle injection procedure. Feasibility and safety to accurately position needle devices and/or inject under real time EUS imaging with precise delivery of interventional agent have expanded the use of EUS to ablate tumor...
February 7, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28164897/assembling-a-make-shift-light-source-for-a-radio-frequency-device-for-skin-ablation
#4
Karalikkattil T Ashique, Kassim Kolakkadan, Feroze Kaliyadan
No abstract text is available yet for this article.
March 2017: Indian Journal of Dermatology, Venereology and Leprology
https://www.readbyqxmd.com/read/28163466/angiolymphoid-hyperplasia-with-oeosinophilia-showing-promising-result-with-intralesional-radio-frequency-ablation-therapy-a-new-cost-effective-and-hassle-free-modality-of-treatment
#5
Chintaginjala Aruna, Senthil Kumar Alagappan, Ramamurthy Damaraju Venkata Satya Bhaskara, Sruthi Kondaveeti
No abstract text is available yet for this article.
October 2016: Journal of Cutaneous and Aesthetic Surgery
https://www.readbyqxmd.com/read/28162726/-472-supraorbital-neuralgia-treatment-with-radio-frequency-ablation
#6
A Dua, J Shepherd, S Bahadur, D Martin
No abstract text is available yet for this article.
April 2016: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28122031/long-term-outcomes-of-radio-frequency-catheter-ablation-on-ventricular-tachycardias-due-to-arrhythmogenic-right-ventricular-cardiomyopathy-a-single-center-experience
#7
Wei Wei, Hongtao Liao, Yumei Xue, Xianhong Fang, Jun Huang, Yang Liu, Hai Deng, Yuanhong Liang, Zili Liao, Fangzhou Liu, Weidong Lin, Xianzhang Zhan, Shulin Wu
AIMS: To summarize our experience of radiofrequency catheter ablation (RFCA) for recurrent drug-refractory ventricular tachycardias (VTs) due to arrhythmogenic right ventricular cardiomyopathy (ARVC) in our center over the past 11 years and its related factors. METHODS AND RESULTS: We reviewed 48 adults (mean age 39.9 ± 12.9 years, range: 14 to 65) who met the present ARVC diagnostic criteria and accepted RFCA for VTs from December 2004 to April 2016. The patients received a total of 70 procedures using two ablation approaches, the endocardial approach in 52 RFCAs, and the combined epicardial and endocardial approach (the combined approach) in 18 RFCAs...
2017: PloS One
https://www.readbyqxmd.com/read/28113236/accurate-physics-based-registration-for-the-outcome-validation-of-minimal-invasive-interventions-and-open-liver-surgeries
#8
Cristina Laura, Klaus Drechsler, Stefan Wesarg, Reto Bale
OBJECTIVE: The purpose of this paper is to present an outcome validation tool for tumor radio frequency ablation and resection. METHODS: Intervention assessment tools require an accurate registration of both pre- and postoperative computed tomographies able to handle big deformations. Therefore, a physics based method is proposed with that purpose. To increase the accuracy both automatically detected internal and surface physical landmarks are incorporated in the registration process...
April 27, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28012210/elimination-of-ventricular-arrhythmia-in-catecholaminergic-polymorphic-ventricular-tachycardia-by-targeting-catecholamine-sensitive-area-a-dominant-subordinate-relationship-between-origin-sites-of-bidirectional-ventricular-premature-contractions
#9
Yasuhiro Shirai, Masahiko Goya, Seiko Ohno, Minoru Horie, Shozaburo Doi, Mitsuaki Isobe, Kenzo Hirao
We report on a patient diagnosed with CPVT who underwent catheter ablation of VPCs induced by epinephrine. VPCs were classified roughly into 3 types. Type 1 and Type 2 VPCs (RBBB configuration and inferior axis) were eliminated by radio frequency applications at the left aortic sinus of Valsalva and the anterolateral papillary muscle (APM), respectively. Although no spontaneous VPCs were seen after the elimination of Type 1 and 2 VPCs, pacing resulting in capture at the APM induced type 3 VPC (RBBB configuration and superior axis) reproducibly...
December 24, 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/27994333/comparative-study-of-outcome-of-duplex-ultrasound-guided-catheter-directed-foam-sclerotherapy-and-radio-frequency-ablation-in-the-management-of-great-saphenous-varicose-veins
#10
Manish Kumar Mishra, Rajesh Kumar Soni, Ravindra Singh Mohil, Ajit Sinha
Chronic venous insufficiency of lower limbs is a common problem in adults. We compared the two modalities, namely duplex ultrasound-guided, catheter-directed foam sclerotherapy (UGFS) and radio-frequency ablation (RFA), in the management of great saphenous varicose veins using clinical assessment (Venous Clinical Severity Score, Venous Disability Score) and duplex imaging. Patients presenting with great saphenous vein (GSV) varicosity due to incompetent saphenofemoral junction (SFJ) were selected and randomly assigned in each arm, i...
October 2016: Indian Journal of Surgery
https://www.readbyqxmd.com/read/27981883/varicose-vein-therapy-and-nerve-lesions
#11
Tobias Hirsch
Treating varicose veins using endovenous thermal techniques - especially laser and radio frequency ablation - has emerged as an effective alternative to open surgery with stripping and high ligation. Even though these methods are very gentle and patient-friendly, they are nevertheless accompanied by risks and side effects. Compared to open surgical therapy, the risk of damage to peripheral and motor nerves is reduced; however, it still exists as a result of heat exposure and tumescent anaesthesia. Non-thermal methods that can be applied without tumescent anaesthesia have been introduced to the market...
December 16, 2016: VASA. Zeitschrift Für Gefässkrankheiten
https://www.readbyqxmd.com/read/27966462/radio-frequency-mediated-local-thermotherapy-for-destruction-of-pancreatic-tumors-using-ni-au-core-shell-nanowires
#12
Xiaoping Hopkins, Waqas Amin Gill, Rosemarie Kringel, Guankui Wang, Jamie Hass, Suresh Acharya, Jungrae Park, In Tak Jeon, Boo Hyun An, Ji Sung Lee, Jong Eun Ryu, Rod Hill, David McIlroy, Young Keun Kim, Daniel S Choi
We present a novel method of radio frequency (RF)-mediated thermotherapy in tumors by remotely heating nickel (Ni)-gold (Au) core-shell nanowires (CSNWs). Ectopic pancreatic tumors were developed in nude mice to evaluate the thermotherapeutic effects on tumor progression. Tumor ablation was produced by RF-mediated thermotherapy via activation of the paramagnetic properties of the Ni-Au CSNWs. Histopathology demonstrated that heat generated by RF irradiation caused significant cellular death with pyknotic nuclei and nuclear fragmentation dispersed throughout the tumors...
January 20, 2017: Nanotechnology
https://www.readbyqxmd.com/read/27932994/comparative-mrna-and-microrna-profiling-during-acute-myocardial-infarction-induced-by-coronary-occlusion-and-ablation-radio-frequency-currents
#13
Eduardo T Santana, Regiane Dos Santos Feliciano, Andrey J Serra, Eduardo Brigidio, Ednei L Antonio, Paulo J F Tucci, Lubov Nathanson, Mariana Morris, José A Silva
The ligation of the left anterior descending coronary artery is the most commonly used experimental model to induce myocardial infarction (MI) in rodents. A high mortality in the acute phase and the heterogeneity of the size of the MI obtained are drawbacks recognized in this model. In an attempt to solve the problem, our group recently developed a new MI experimental model which is based on application of myocardial ablation radio-frequency currents (AB-RF) that yielded MI with homogeneous sizes and significantly reduce acute mortality...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27928789/-surgical-management-of-locally-advanced-digestive-tract-neuroendocrine-neoplasm-with-or-without-liver-metastasis
#14
Xiaosong Wang, Jiangfeng Qiu, Zhiyong Wu
Neuroendocrine tumors in the digestive tract are rare, however their incidences increased obviously for the past few years. The purpose of this paper is to elucidate the surgical management of locally advanced digestive tract neuroendocrine neoplasms(NENs) with or without liver metastasis and to discuss the present classification of gastrointestinal NENs in order to provide reference for clinicians. WHO re-classified the gastroenteropancreatic NENs in 2010, but this classification remains many questions and needs further clinical trials to answer...
November 25, 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27909131/mri-appearances-of-atypical-cartilaginous-tumour-grade-i-chondrosarcoma-after-treatment-by-curettage-phenolisation-and-allografting-recommendations-for-follow-up
#15
S H M Verdegaal, C S van Rijswijk, H F C Brouwers, P D S Dijkstra, M A J van de Sande, P C W Hogendoorn, A H M Taminiau
AIMS: The purpose of this retrospective study was to differentiate between the MRI features of normal post-operative change and those of residual or recurrent disease after intralesional treatment of an atypical cartilage tumour (ACT)/grade I chondrosarcoma. PATIENTS AND METHODS: We reviewed the case notes, radiology and histology of 75 patients, who had been treated for an ACT/grade I chondrosarcoma by curettage, phenolisation and bone allografting between 1994 and 2005...
December 2016: Bone & Joint Journal
https://www.readbyqxmd.com/read/27875060/open-versus-thoracoscopic-rfa-assisted-lung-resection
#16
Anna Poupalou, Michael Kontos, Evangelos Felekouras, Apostolos Papalois, Nikolaos Kavantzas, George Agrogiannis, Fatima Yagoubi, Periklis Tomos
The purpose of this study was to evaluate Radio Frequency Ablation (RFA)-assisted lung parenchymal transection through thoracotomy and thoracoscopy. Twelve domestic pigs underwent RFA-assisted lingulectomy: six through thoracotomy (group A), and six with thoracoscopy (group B). There was no mortality, no bleeding, or air leak intra- or postoperatively in either of the groups, and no conversion to open thoracotomy in group B. Group A had longer operating period and more pleural adhesions. A barotrauma, a skin burn, and a localized infection were observed in this group...
November 22, 2016: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/27846343/temperature-profile-of-ex-vivo-organs-during-radio-frequency-thermal-ablation-by-fiber-bragg-gratings
#17
Giovanna Palumbo, Agostino Iadicicco, Daniele Tosi, Paolo Verze, Nicola Carlomagno, Vincenzo Tammaro, Juliet Ippolito, Stefania Campopiano
No abstract text is available yet for this article.
November 1, 2016: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/27831864/3d-myocardial-elastography-in-vivo
#18
Clement Papadacci, Ethan A Bunting, Elaine Y Wan, Pierre Nauleau, Elisa E Konofagou
Strain evaluation is of major interest in clinical cardiology as it can quantify the cardiac function. Myocardial elastography, a radio-frequency (RF)-based cross-correlation method, has been developed to evaluate the local strain distribution in the heart in vivo. However, inhomogeneities such as RF ablation lesions or infarction require a three-dimensional approach to be measured accurately. In addition, acquisitions at high volume rate are essential to evaluate the cardiac strain in three dimensions. Conventional focused transmit schemes using 2D matrix arrays, trade off sufficient volume rate for beam density or sector size to image rapid moving structure such as the heart, which lowers accuracy and precision in the strain estimation...
February 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/27830452/fabrication-of-self-expandable-niti-thin-film-devices-with-micro-electrode-array-for-bioelectric-sensing-stimulation-and-ablation
#19
Christoph Bechtold, Rodrigo Lima de Miranda, Christoph Chluba, Eckhard Quandt
Self-expandable medical devices provide mechanical functionality at a specific location of the human body and are viable for minimal invasive procedures. Besides radiopaque markers and drug-eluting coatings, next generation self-expandable devices can be equipped with additional functionality, such as conductive and flexible electrodes, which enables chronic recording of bioelectrical signals, stimulating or ablating tissue. This promises new therapeutic options in various medical fields, among them in particular neuromodulation (e...
December 2016: Biomedical Microdevices
https://www.readbyqxmd.com/read/27793949/sorafenib-combined-with-radio-frequency-ablation-compared-with-sorafenib-alone-in-treatment-of-hepatocellular-carcinoma-invading-portal-vein-a-western-randomized-controlled-trial
#20
RANDOMIZED CONTROLLED TRIAL
Antonio Giorgio, Maria Gabriella Merola, Luca Montesarchio, Francesca Merola, Bruno Santoro, Carmine Coppola, Pietro Gatti, Ferdinando Amendola, Antonella DI Sarno, Andrea Calvanese, Paolo Matteucci, Valentina Giorgio
AIM: To compare in a randomized controlled trial (RCT) 3-year survival of cirrhotic patients with hepatocellular carcinoma (HCC) accompanied by portal vein tumor thrombus (PVTT) treated with sorafenib plus percutaneous radiofrequency ablation (RFA) of both intraparenchymal HCC and PVTT (combination Group) or sorafenib alone (sorafenib-alone Group). PATIENTS AND METHODS: Ninety-nine consecutive Child A cirrhotics were randomized to receive RFA of both HCC and main portal vein tumor thrombus (MPVTT) plus sorafenib (n=49) or sorafenib alone (n=50)...
2016: Anticancer Research
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