keyword
MENU ▼
Read by QxMD icon Read
search

Radiofrequency lesioning

keyword
https://www.readbyqxmd.com/read/29345381/durable-lesion-formation-while-avoiding-esophageal-injury-during-ablation-of-atrial-fibrillation-lessons-learned-from-late-gadolinium-mr-imaging
#1
Mihail G Chelu, Alan K Morris, Eugene G Kholmovski, Jordan B King, Gagandeep Kaur, Michelle A Silver, Joshua E Cates, Frederick T Han, Nassir F Marrouche
INTRODUCTION: Adequate catheter/atrial tissue contact is critical for lesion formation during radiofrequency (RF) ablation of atrial fibrillation (AF). Late gadolinium enhancement magnetic resonance imaging (LGE-MRI) is a unique tool for the evaluation of lesion formation and detection of acute esophageal injury. METHODS: LGE-MRIs were obtained prior, within 24 hours of, and at 115±62 days after first AF ablation in 36 patients. The Visitag module of CARTO3 was used to collect contact force (CF) and duration from a CF sensing ablation catheter for each registered ablation point...
January 18, 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29342456/correlation-between-resection-margin-and-disease-recurrence-with-a-restricted-cubic-spline-model-in-patients-with-resected-hepatocellular-carcinoma
#2
Woohyung Lee, Ho-Seong Han, Soyeon Ahn, Yoo-Seok Yoon, Jai Young Cho, YoungRok Choi
BACKGROUND: The relationship between resection margin (RM) and recurrence of resected hepatocellular carcinoma (HCC) is unclear. METHODS: We reviewed clinical data for 419 patients with HCC. The oncologic outcomes were compared between 2 groups of patients classified according to the inflexion point of the restricted cubic spline plot. RESULTS: The patients were divided according to an RM of <1 cm (n = 233; narrow RM group) or ≥1 cm (n = 186; wide RM group)...
January 17, 2018: Digestive Surgery
https://www.readbyqxmd.com/read/29337089/thermal-field-distributions-of-ablative-experiments-using-cyst-mimicking-phantoms-comparison-of-microwave-and-radiofrequency-ablation
#3
Xiao-Wen Huang, Fang Nie, Zeng-Cheng Wa, Hang-Tong Hu, Qing-Xiu Huang, Huan-Ling Guo, Qiao Zheng, Xiao-Yan Xie, Wei Wang, Ming-De Lu
RATIONALE AND OBJECTIVES: The objective of this study was to explore the thermal field distribution of cystic lesions undergoing microwave ablation (MWA) and radiofrequency ablation (RFA) using in vitro phantoms. MATERIALS AND METHODS: Cyst-mimicking lesions filled with sodium chloride (NaCl) solution in acrylamide phantoms were treated with MWA and RFA in vitro. The radiofrequency electrodes or MWA antennas were implanted in the centers of the artificial cystic lesions...
January 11, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29336937/the-combination-of-stereo-eeg-and-radiofrequency-ablation
#4
Hélène Catenoix, Pierre Bourdillon, Marc Guénot, Jean Isnard
SEEG-guided radiofrequency thermocoagulation (SEEG-guided RFTC), a combination of Stereo-electroencephalography (SEEG) and radiofrequency thermocoagulation (RFTC), has been performed since 2001 in drug resistant epilepsy. The interest of this procedure is to aim at total or partial destruction of the epileptogenic zone, as tailored in each individual patient by the SEEG exploration. These multiple SEEG-guided RFTC lesions of epileptic foci are produced by using a radiofrequency generator connected to the electrode contacts...
January 9, 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29332081/radiosurgical-subthalamic-nucleotomy
#5
Jean Régis, Romain Carron, Tatiana Witjas
Deep brain stimulation (DBS) of the subthalamic nucleus (STN) is the reference technique in Parkinson's disease (PD) at different stages of complications. Some patients cannot afford DBS due to anticoagulation or comorbidities or due to pecuniary reasons. Radiosurgery is a minimally invasive stereotactic technique, with no craniotomy and subsequently no risk of bleeding or infection. Its good safety efficacy profile has been established in the treatment of tremor, and the postoperative care issues are simple with a much shorter hospital stay (mean 48 h)...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29332080/radiosurgical-pallidotomy-for-parkinson-s-disease
#6
Leslie D Cahan, Ronald F Young, Francisco Li
Deep brain stimulation (DBS) has been widely accepted as a tool for treating many symptoms of Parkinson's disease (PD); pallidotomy has been nearly abandoned. Concerns about both the safety and efficacy of pallidotomy are based on small series, isolated case reports, and techniques that would now be considered obsolete. The senior author recently reviewed long-term follow-up of a series of patients who had gamma knife pallidotomy (GKP) for advanced PD. GKP leads to durable, clinically significant benefit. Bilateral GKP adds incremental improvement...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29332077/stereotactic-radiofrequency-lesioning-for-movement-disorders
#7
Takaomi Taira, Shiro Horisawa, Nobuhiko Takeda, Prajakta Ghate
During the past 2 decades, deep brain stimulation (DBS) took over the position of radiofrequency (RF) lesioning of thalamic or pallidal targets for control of movement disorders. Superiority of DBS over RF lesioning is widely accepted, and most neurosurgeons even regard RF lesioning to be old-fashioned and dangerous. Such concepts emerged from the data of old stereotactic operations with ventriculography and without computerized planning. Hardware-related complications are not negligible in long-term DBS therapy, and DBS only controls the symptoms...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29326290/functional-lesional-neurosurgery-for-tremor-a-systematic-review-and-meta-analysis
#8
REVIEW
Sebastian R Schreglmann, Joachim K Krauss, Jin Woo Chang, Kailash P Bhatia, Georg Kägi
BACKGROUND: This work evaluates the consistency, effect size and incidence of persistent side effects of lesional neurosurgical interventions in the treatment of tremor due to Parkinson's disease (PD), essential tremor (ET), multiple sclerosis (MS) and midbrain lesions. METHODS: Systematic review and meta-analysis according to PRISMA-P guidelines. Random effects meta-analysis of standardised mean difference based on a peer-reviewed protocol (PROSPERO no. CRD42016048049)...
January 11, 2018: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29325036/evaluation-of-left-atrial-linear-ablation-using-contiguous-and-optimized-radiofrequency-lesions-the-aline-study
#9
Michael Wolf, Milad El Haddad, Joël Fedida, Philippe Taghji, Katarina Van Beeumen, Teresa Strisciuglio, Jan De Pooter, Caroline Lepièce, Yves Vandekerckhove, René Tavernier, Mattias Duytschaever, Sébastien Knecht
Aims: Achieving block across linear lesions is challenging. We prospectively evaluated radiofrequency (RF) linear ablation at the roof and mitral isthmus (MI) using point-by-point contiguous and optimized RF lesions. Methods and results: Forty-one consecutive patients with symptomatic persistent AF underwent stepwise contact force (CF)-guided catheter ablation during ongoing AF. A single linear set of RF lesions was delivered at the roof and posterior MI according to the 'Atrial LINEar' (ALINE) criteria, i...
January 8, 2018: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29323550/assessing-the-effect-of-weight-based-protocol-modifications-to-lower-dose-for-ct-guided-hepatic-and-renal-tumor-radiofrequency-ablations
#10
Supriya Gupta, Ronald S Arellano, Debra A Gervais, Dushyant V Sahani
OBJECTIVE: This study assessed radiation dose after CT-guided percutaneous radiofrequency ablations (RFAs) of hepatic and renal tumors and the effect of weight-based CT protocol modification for lowering overall dose in these procedures. MATERIALS AND METHODS: CT-guided RFA for renal and hepatic ablations performed from January 1, 2009, through December 31, 2009, were retrospectively reviewed (90 men and 48 women; age, 42-81 years). The radiation dose was recorded during each of the following steps: planning, performing, and postprocedure...
January 11, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29322881/radiofrequency-ablation-of-primary-thyroid-carcinoma-efficacy-according-to-the-types-of-thyroid-carcinoma
#11
So Yeong Jeong, Jung Hwan Baek, Young Jun Choi, Sae Rom Chung, Tae Yon Sung, Won Gu Kim, Tae Yong Kim, Jeong Hyun Lee
OBJECTIVE: To evaluate the efficacy of ultrasound (US)-guided radiofrequency ablation (RFA) according to the types of thyroid carcinoma, particularly in patients with a high surgical risk. MATERIALS AND METHODS: Eight patients with nine tumors of pathologically proven papillary and anaplastic carcinoma were treated by US-guided RFA. Patients with primary thyroid carcinoma were divided into three groups; group 1: Anaplastic carcinoma, group 2: papillary macrocarcinoma, and group 3: papillary microcarcinoma...
January 11, 2018: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29322616/development-of-methods-and-feasibility-of-using-hyperpolarized-carbon-13-imaging-data-for-evaluating-brain-metabolism-in-patient-studies
#12
Ilwoo Park, Peder E Z Larson, Jeremy W Gordon, Lucas Carvajal, Hsin-Yu Chen, Robert Bok, Mark Van Criekinge, Marcus Ferrone, James B Slater, Duan Xu, John Kurhanewicz, Daniel B Vigneron, Susan Chang, Sarah J Nelson
PURPOSE: Hyperpolarized carbon-13 (13 C) metabolic imaging is a noninvasive imaging modality for evaluating real-time metabolism. The purpose of this study was to develop and implement experimental strategies for using [1-13 C]pyruvate to probe in vivo metabolism for patients with brain tumors and other neurological diseases. METHODS: The 13 C radiofrequency coils and pulse sequences were tested in a phantom and were performed using a 3 Tesla whole-body scanner...
January 10, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29318633/long-term-outcomes-following-cryoablation-of-atrioventricular-nodal-reentrant-tachycardia-in-children
#13
Mehmet Karacan, Nida Çelik, Celal Akdeniz, Volkan Tuzcu
BACKGROUND: Atrioventricular nodal reentrant tachycardia (AVNRT) is a common tachyarrhythmia substrate in children, which is successfully treated by catheter ablation using radiofrequency or cryothermal energy. In recent years, cryoablation (Cryo) using electroanatomical system guidance is more commonly preferred for use in children in order to decrease the risk of an atrioventricular block. However, there are concerns regarding the long-term efficacy of Cryo in treating AVNRT. We aimed to evaluate the feasibility, safety, and long-term efficacy of Cryo for AVNRT in children...
January 9, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29315941/thromboembolic-prophylaxis-protocol-with-warfarin-after-radiofrequency-catheter-ablation-of-infarct-related-ventricular-tachycardia
#14
Konstantinos C Siontis, Sina Jamé, Ghaith Sharaf Dabbagh, Rakesh Latchamsetty, Krit Jongnarangsin, Fred Morady, Frank M Bogun
INTRODUCTION: Ablation in the left ventricle (LV) is associated with a risk of thromboembolism. There are limited data on the use of specific thromboembolic prophylaxis strategies post-ablation. We aimed to evaluate a thromboembolic prophylaxis protocol after ventricular tachycardia (VT) ablation. METHODS AND RESULTS: The index procedures of 217 patients undergoing ablation for infarct-related VT with open irrigated-tip catheters were included. Patients with large LV endocardial ablation area (> 3 cm between ablation lesions) were started on low-dose, slowly escalating unfractionated heparin (UFH) infusion 8 hours after access hemostasis, followed by 3 months of anticoagulation...
January 9, 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29315411/improving-procedural-and-one-year-outcome-after-contact-force-guided-pulmonary-vein-isolation-the-role-of-interlesion-distance-ablation-index-and-contact-force-variability-in-the-close-protocol
#15
Thomas Phlips, Philippe Taghji, Milad El Haddad, Michael Wolf, Sébastien Knecht, Yves Vandekerckhove, René Tavernier, Mattias Duytschaever
Aims: We have recently shown that a contact force (CF)-guided ablation protocol respecting region-specific criteria of lesion contiguity and lesion depth ('CLOSE' protocol) is associated with high incidence of acute durable pulmonary vein (PV) isolation (PVI) and a high single-procedure arrhythmia-free survival at 1 year. In the present study, we compared efficiency, safety, and efficacy of 'CLOSE'-guided PVI to conventional CF-guided PVI (CONV-CF). Methods and results: Fifty consecutive paroxysmal atrial fibrillation (AF) patients underwent PV encircling using a CF-sensing catheter targeting an interlesion distance (ILD) ≤6 mm and ablation index (AI) ≥400 and ≥550 at posterior and anterior wall ('CLOSE' group)...
January 4, 2018: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29303914/current-opinion-in-urology-2017-focal-therapy-of-small-renal-lesions
#16
Brett A Johnson, Jeffrey A Cadeddu
PURPOSE OF REVIEW: With the increasing incidence of small renal masses (SRMs), ablative technologies are becoming more commonly utilized. With any nascent treatment modality, outcomes literature needs to be constantly re-evaluated. The purpose of this review is to revisit the most updated literature regarding the safety and efficacy of ablative treatments of renal lesions. RECENT FINDINGS: Recent literature demonstrates that small renal tumor ablation is safe and effective...
January 4, 2018: Current Opinion in Urology
https://www.readbyqxmd.com/read/29301446/real-time-estimation-of-lesion-depth-and-control-of-radiofrequency-ablation-within-ex-vivo-animal-tissues-using-a-neural-network
#17
Yearnchee Curtis Wang, Terence Chee-Hung Chan, Alan Varteres Sahakian
BACKGROUND: Radiofrequency ablation (RFA), a method of inducing thermal ablation (cell death), is often used to destroy tumours or potentially cancerous tissue. Current techniques for RFA estimation (electrical impedance tomography, Nakagami ultrasound, etc.) require long compute times (≥ 2 s) and measurement devices other than the RFA device. This study aims to determine if a neural network (NN) can estimate ablation lesion depth for control of bipolar RFA using complex electrical impedance - since tissue electrical conductivity varies as a function of tissue temperature - in real time using only the RFA therapy device's electrodes...
January 4, 2018: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29285740/grading-system-to-categorize-breast-mri-using-bi-rads-5th-edition-a-statistical-study-of-non-mass-enhancement-descriptors-in-terms-of-probability-of-malignancy
#18
Tatsunori Asada, Takayuki Yamada, Yoshihide Kanemaki, Keishi Fujiwara, Satoko Okamoto, Yasuo Nakajima
PURPOSE: To analyze the association of breast non-mass enhancement descriptors in the BI-RADS 5th edition with malignancy, and to establish a grading system and categorization of descriptors. MATERIALS AND METHODS: This study was approved by our institutional review board. A total of 213 patients were enrolled. Breast MRI was performed with a 1.5-T MRI scanner using a 16-channel breast radiofrequency coil. Two radiologists determined internal enhancement and distribution of non-mass enhancement by consensus...
December 29, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/29284482/outcomes-of-arthroscopic-debridement-of-isolated-ligamentum-teres-tears-using-the-ihot-33
#19
Nicholas Pergaminelis, Jesse Renouf, Camdon Fary, Oren Tirosh, Phong Tran
BACKGROUND: Tears of the Ligamentum Teres are a common cause of groin pain. Tears of the ligament frequently co-exist alongside other bony or labral intra-articular hip lesions, which are also treated at the time of arthroscopy. For this reason, it is often difficult to assess the effect that debridement alone has on improving patient pain and function. This study aims to assess the short-term outcomes of arthroscopic debridement of isolated Ligamentum Teres tears using a validated patient-reported outcome score - the International Hip Outcome Tool (iHOT-33)...
December 29, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29275456/pulse-dose-radiofrequency-treatment-in-pain-management-initial-experience
#20
REVIEW
Christine Ojango, Mario Raguso, Roberto Fiori, Salvatore Masala
Radiofrequency procedures have been used for treating various chronic pain conditions for decades. These minimally invasive percutaneous treatments employ an alternating electrical current with oscillating radiofrequency wavelengths to eliminate or alter pain signals from the targeted site. The aim of the continuous radiofrequency procedure is to increase the temperature sufficiently to create an irreversible thermal lesion on nerve fibres and thus permanently interrupt pain signals. The pulsed radiofrequency procedure utilises short pulses of radiofrequency current with intervals of longer pauses to avert a temperature increase to the level of permanent tissue damage...
December 23, 2017: Skeletal Radiology
keyword
keyword
52631
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"