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https://www.readbyqxmd.com/read/28634562/a-simple-bone-cyst-in-cervical-vertebrae-of-an-adolescent-patient
#1
Adriana Bruges Boude, Lina González Vásquez, Fernando Alvarado-Gomez, María Constanza Bedoya, Andrés Rodríguez-Múnera, Luis Carlos Morales-Saenz
INTRODUCTION: Spinal simple bone cysts, also known as solitary cysts, are extremely unusual benign primary bone tumors with few cases reported in the literature. CASE PRESENTATION: Incidental Magnetic Resonance Imaging (MRI) finding of a C2 Simple bone cyst in a 13-year-old female patient is reported. Complementary studies suggested the benign nature of the lesion. Patient underwent cervical curettage followed by tumor excision. A lateral submandibular approach to the upper cervical spine was used and careful bone resection was possible with a radiofrequency assisted burr and no instrumentation or fixation was required...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28634149/a-non-invasive-restraining-system-for-awake-mouse-imaging
#2
Dan Madularu, Axel P Mathieu, Chathura Kumaragamage, Lauren Reynolds, Jamie Near, Cecilia Flores, M Natasha Rajah
BACKGROUND: Preclinical neuroimaging allows for the assessment of brain anatomy, connectivity and function in laboratory animals, such as mice and rats. Most of these studies are performed under anesthesia to avoid movement during the scanning sessions. METHOD: Due to the limitations associated with anesthetized imaging, recent efforts have been made to conduct rodent imaging studies in awake animals, habituated to the restraint systems used in these instances. As of now, only one such system is commercially available for mouse scanning (Animal Imaging Research, Boston, MA, USA) integrating the radiofrequency coil electronics with the restraining element, an approach which, although effective in reducing head motion during awake imaging, has some limitations...
June 17, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28633198/factors-related-to-the-efficacy-of-radiofrequency-ablation-for-benign-thyroid-nodules
#3
Jung Hwan Baek
No abstract text is available yet for this article.
May 17, 2017: Ultrasonography
https://www.readbyqxmd.com/read/28633122/plasma-treatment-switches-the-regime-of-wetting-and-floating-of-pepper-seeds
#4
Yekaterina Shapira, Victor Multanen, Gene Whyman, Yelena Bormashenko, Gilad Chaniel, Zahava Barkay, Edward Bormashenko
Cold radiofrequency plasma treatment modified wetting and floating regimes of pepper seeds. The wetting regime of plasma-treated seeds was switched from the Wenzel-like partial wetting to the complete wetting. No hydrophobic recovery following the plasma treatment was registered. Environmental scanning electron microscopy of the fine structure of the (three-phase) triple line observed with virgin and plasma-treated seeds is reported. Plasma treatment promoted rapid sinking of pepper seeds placed on the water/air interface...
June 7, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28631963/tumor-penetrating-peptide-integrated-thermally-sensitive-liposomal-doxorubicin-enhances-efficacy-of-radiofrequency-ablation-in-liver-tumors
#5
Fei Yan, Song Wang, Wei Yang, S Nahum Goldberg, Hao Wu, Wan-Lu Duan, Zhi-Ting Deng, Hai-Bo Han, Hai-Rong Zheng
Purpose To investigate the role of a tumor-penetrating peptide (internalizing CRGDRGPDC [iRGD])-integrated thermally sensitive liposomal (TSL) doxorubicin (DOX) in combination with radiofrequency (RF) ablation of liver tumors in an animal model. Materials and Methods Approval from the institutional animal care and use committee was obtained. Characterization of iRGD-TSL-DOX was performed in vitro. Next, H22 liver adenocarcinomas were implanted in 138 mice in vivo. The DOX accumulation and cell apoptosis of iRGD-TSL-DOX and TSL-DOX with or without RF were evaluated (n = 5) at different time points after treatment with quantitative analysis or pathologic staining...
June 19, 2017: Radiology
https://www.readbyqxmd.com/read/28630174/experimental-pathologic-and-clinical-findings-of-radiofrequency-catheter-ablation-of-para-hisian-region-from-the-right-ventricle-in-dogs-and-humans
#6
Yumei Xue, Xianzhang Zhan, Shulin Wu, Hongyue Wang, Yang Liu, Zili Liao, Hai Deng, Xuejing Duan, Shaoying Zeng, Dongpo Liang, Arif Elvan, Xianhong Fang, Hongtao Liao, Anand R Ramdat Misier, Jaap Jan J Smit, Andreas Metzner, Christian-Hendrik Heeger, Fangzhou Liu, Feng Wang, Zhiwei Zhang, Karl-Heinz Kuck, Siew Yen Ho, Feifan Ouyang
BACKGROUND: Ablation of para-Hisian accessory pathway (AP) poses high risks of atrioventricular block. We developed a pacing technique to differentiate the near-field (NF) from far-field His activations to avoid the complication. METHODS AND RESULTS: Three-dimensional mapping of the right ventricle was performed in 15 mongrel dogs and 23 patients with para-Hisian AP. Using different pacing outputs, the NF- and far-field His activation was identified on the ventricular aspect...
June 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28630168/incidence-and-factors-associated-with-the-occurrence-of-pulmonary-vein-narrowing-after-cryoballoon-ablation
#7
Ryohsuke Narui, Michifumi Tokuda, Masato Matsushima, Ryota Isogai, Kenichi Tokutake, Kenichi Yokoyama, Mika Hioki, Keiichi Ito, Shin-Ichi Tanigawa, Seigo Yamashita, Keiichi Inada, Kenri Shibayama, Seiichiro Matsuo, Satoru Miyanaga, Kenichi Sugimoto, Michihiro Yoshimura, Teiichi Yamane
BACKGROUND: In contrast with traditional radiofrequency ablation, little is known about the influence of cryoballoon ablation on the morphology of pulmonary veins (PVs). We evaluated the influence of cryoballoon ablation on the PV dimension (PVD) and investigated the factors associated with a reduction of the PVD. METHODS AND RESULTS: Seventy-four patients who underwent cryoballoon ablation for paroxysmal atrial fibrillation were included in the present study. All subjects underwent contrast-enhanced computed tomography both before and at 3 months after the procedure...
June 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28628718/a-better-method-for-assessment-of-hepatic-function-in-hcc-patients-who-underwent-radiofrequency-ablation-usefulness-of-albumin-bilirubin-grade
#8
Atsushi Hiraoka, Takashi Kumada, Masashi Hirooka, Kunihiko Tsuji, Ei Itobayashi, Kazuya Kariyama, Toru Ishikawa, Kazuto Tajiri, Hirofumi Ochi, Toshifumi Tada, Hidenori Toyoda, Kazuhiro Nouso, Kouji Joko, Hideki Kawasaki, Yoichi Hiasa, Kojiro Michitaka
AIM/BACKGROUND: To evaluate the efficacy of the newly proposed albumin-bilirubin (ALBI)-grade for therapy selection, clinical features of patients treated with radiofrequency ablation (RFA) were elucidated. MATERIALS/METHODS: From 2000 to 2015, 1101 patients with HCC (<3 cm, ≤3 tumors) treated with RFA were enrolled [males 734, females 367; HCV:HBV:HCV&HBV:others=779:153:5:164; Child-Pugh classification (CP) A:B=842:259]. Liver damage classification (LD) using with ICG-R15 and ALBI-grade were compared in regard to the prognoses of those patients...
June 19, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/28628684/megasessions-efficacy-of-fewer-longer-treatment-sessions-for-fat-reduction-in-noninvasive-body-contouring-using-a-radiofrequency-based-device
#9
Diane Duncan
<p>While the field of noninvasive body contouring is booming, many patients still note a lesser result than they might achieve with a single session of liposuction or dermolipectomy. The duration of a noninvasive fat reduction treatment series can be daunting. Patients have questioned the worth of these procedures when the expected benefit is modest and the time they devote to the project is significant. An eight-patient mini-study was performed to see if two or three "megasessions" could be substituted for eight weekly sessions of bipolar radiofrequency based fat reduction treatments...
May 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28628221/influence-of-radiofrequency-electromagnetic-waves-from-3rd-generation-cellular-phones-on-fertilization-and-embryo-development-in-mice
#10
Satoshi Suzuki, Miho Okutsu, Ryota Suganuma, Hiromi Komiya, Setsu Nakatani-Enomoto, Shunsuke Kobayashi, Yoshikazu Ugawa, Hiroyuki Tateno, Keiya Fujimori
The purpose of this study was to evaluate the effects of 3rd-generation (3G) cellular phone radiofrequency-electromagnetic wave (RF-EMW) exposure on fertilization and embryogenesis in mice. Oocytes and spermatozoa were exposed to 3G cellular phone RF-EMWs, 1.95 GHz wideband code division multiple access, at a specific absorption rate of 2 mW/g for 60 min, or to sham exposure. After RF-EMW exposure, in vitro fertilization and intracytoplasmic sperm injection were performed. Rates of fertilization, embryogenesis (8-cell embryo, blastocyst), and chromosome aberration were compared between the combined spermatozoa and oocyte groups: both exposed, both non-exposed, one exposed, and the other non-exposed...
June 19, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28628012/curative-treatment-of-colorectal-cancer-solitary-metastasis-to-liver-subcapsule-by-percutaneous-us-guided-radiofrequency-ablation-using-hydrodissection-case-report
#11
N Paksashvili, T Ninikashvili, T Azrumelashvili, M Mizandari
Case report presents the successful treatment of solitary liver metastasis in a patient with resected colon cancer. A 39-year-old male underwent left hemicolectomy with colostomy formation followed by chemotherapy for a moderately differentiated adenocarcinoma of the colon. Two years later, a liver metastatic lesion was detected. Patient received chemotherapy; the mass remained stable in size, measuring up to 3 cm in diameter. Low-invasive percutaneous curative treatment by Radiofrequency ablation was conducted using hydrodissection by dielectric fluid intraperitoneal introduction for hydrodissection...
May 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28626095/-role-of-the-autophagy-in-the-treatment-of-neuropathic-pain-with-pulsed-radiofrequency
#12
Lin Yang, Liang Guo, Junmei Xu, Yaping Wang, Dingquan Zou, Xinghua Jiang
To detect the effect of pulse radiofrequency (PRF) treatment on the neuropathic pain established by L5-spinal nerve ligation (SNL) on rats, and to investigate if PRF treatment would affect the expression of autophagy related protein LC3 and autophagy related receptor P62 at the dorsal horn.
 Methods: A total of 36 male Sprague-Dawley rats were randomly divided into 3 groups: a Sham group, a SNL group, and a SNL+PRF group. The 50% paw withdrawal mechanical threshold (PWMT) was detected at 1 day before and 1, 3, 7, 14 and 28 days post-operation by using Von-Frey filaments...
May 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28624555/sacral-neuromodulation-device-heating-during-lumbar-and-pelvic-mri-a-phantom-study
#13
A Quirouet, P K Bhattacharyya, E J Dielubanza, B C Gill, S E Jones, H B Goldman
OBJECTIVE: To evaluate radiofrequency induced temperature rises associated with performing lumbar and pelvic magnetic resonance imaging studies with an implanted sacral neuromodulation device using a phantom model. MATERIALS AND METHODS: An accepted phantom model of RF-induced heating in human tissue was used to measure the temperature rise in the stimulator lead electrodes and impulse generator under the conditions used during routine clinical lumbar and pelvic MRIs in a 1...
June 14, 2017: Urology
https://www.readbyqxmd.com/read/28624422/endovascular-proximal-forearm-arteriovenous-fistula-for-hemodialysis-access-results-of-the-prospective-multicenter-novel-endovascular-access-trial-neat
#14
Charmaine E Lok, Dheeraj K Rajan, Jason Clement, Mercedeh Kiaii, Ravi Sidhu, Ken Thomson, George Buldo, Christine Dipchand, Louise Moist, Joanna Sasal
BACKGROUND: Hemodialysis arteriovenous fistulas (AVFs) are suboptimally used primarily due to problems with maturation, early thrombosis, and patient nonacceptance. An endovascular approach to fistula creation without open surgery offers another hemodialysis vascular access option. STUDY DESIGN: Prospective, single-arm, multicenter study (Novel Endovascular Access Trial [NEAT]). SETTINGS & PARTICIPANTS: Consecutive adult non-dialysis-dependent and dialysis-dependent patients referred for vascular access creation at 9 centers in Canada, Australia, and New Zealand...
June 9, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28624027/racial-disparities-in-treatment-and-survival-of-hepatocellular-carcinoma-in-native-americans-and-hispanics
#15
Eyas Alkhalili, Alissa Greenbaum, Li Luo, Rodrigo Rodriguez, Oscar Estrada Munoz, Jacqueline O'Neill, Itzhak Nir, Katherine T Morris
BACKGROUND: We investigated if there were any differences in disease presentation and survival between the 3 major ethnicities in New Mexico; non-Hispanic whites (NHW), native Americans (NA), and Hispanics (H). METHODS: A retrospective analysis of patients with hepatocellular carcinoma treated at our institution between 2000 and 2014 was performed. Overall survival was analyzed using the Kaplan-Meier and Cox regression models. RESULTS: We identified 326 patients; 106 (32...
July 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28623998/ruptured-common-femoral-vein-pseudoaneurysm-from-a-common-femoral-arteriovenous-fistula-presenting-as-lower-extremity-steal-after-radiofrequency-ablation-of-the-great-saphenous-vein
#16
Robert Scott Brumberg, Cassie Davis
Radiofrequency ablation of the superficial venous systems has become one of the mainstays of minimally invasive approaches to varicose veins and chronic venous insufficiency. These procedures have high rates of success with scarce complications. This case report highlights a patient with a common femoral arteriovenous fistula presenting with lower extremity steal after radiofrequency ablation treatment of the great saphenous vein. During operative repair of the arteriovenous fistula, a pseudoaneurysm of the common femoral vein ruptured...
July 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28623986/double-prepuncture-as-a-valuable-adjunctive-technique-for-complex-endovenous-ablation
#17
Scarlett Hao, Samantha Cox, Thomas S Monahan, Rajabrata Sarkar
OBJECTIVE: The objective of this study was to characterize the technique and to report the results of double prepuncture used during complex radiofrequency ablation (RFA) in cases of treating multiple incompetent veins or encountering focal obstruction to catheter advancement. METHODS: A double prepuncture technique was applied in patients requiring endovascular ablation of multiple veins and patients with great saphenous vein cannulation failure. We treated 13 limbs in 12 patients during a 24-month period with RFA in which the double prepuncture technique was used...
July 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28623296/iodine-125-brachytherapy-prophylaxis-after-radiofrequency-ablation-cannot-benefit-patients-in-high-risk-of-locoregional-hepatocellular-carcinoma-recurrence
#18
Jian-Fei Tu, Ya-Hui Ding, Li Chen, Xi-Hui Ying, Deng-Ke Zhang, Fa-Zong Wu, Zhong-Wei Zhao, Jian-Song Ji, Wang-Gang Zhang, Hai Zou
This study evaluated if iodine-125 brachytherapy prophylaxis after radiofrequency ablation (RFA) prolongs time to recurrence (TTR) and overall survival (OS) of patients in high risk of locoregional hepatocellular carcinoma (HCC) recurrence. 116 patients with total tumor necrosis after RFA were divided into iodine-125 brachytherapy prophylaxis treatment group and control group. The primary endpoint was TTR, and secondary endpoints were OS and treatment-related adverse events. There were no significant differences among the baseline characteristics of two subgroups patients...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28622420/technical-note-comparison-of-megavoltage-dual-energy-and-single-energy-ct-based-%C3%AE-maps-for-a-4-channel-breast-coil-in-pet-mri
#19
John C Patrick, R Terry Thompson, Aaron So, John Butler, David Faul, Robert Z Stodilka, Slav Yartsev, Frank S Prato, Stewart Gaede
PURPOSE: The purpose of this study was to describe and evaluate methods for calculating a megavoltage computed tomography (MVCT) derived MR hardware attenuation map (μ-map) and dual-energy CT (DECT) for 511 keV photons. METHODS: Phantom measurements were acquired on a whole-body hybrid PET/MRI system, using a four-channel receive-only MR radiofrequency (RF) breast coil. Two acquisitions were performed: with the phantoms positioned in the four-channel RF breast coil, and without the breast coil...
June 16, 2017: Medical Physics
https://www.readbyqxmd.com/read/28620054/an-assessment-of-the-autonomic-nervous-system-in-the-electrohypersensitive-population-a-heart-rate-variability-and-skin-conductance-study
#20
Soafara Andrianome, Jonathan Gobert, Laurent Hugueville, Erwan Stéphan-Blanchard, Frederic Telliez, Brahim Selmaoui
The aim of the study was twofold: first, to compare the activity of the autonomic nervous system (ANS) between the population self-declared as electrohypersensitive (EHS) and their matched control individuals without intended exposure to electromagnetic fields (EMF). The second objective was to determine whether acute exposure to different radiofrequency signals modifies ANS activity in EHS. For that purpose, two different experiments were undertaken, in which ANS activity was assessed through heart rate variability (HRV) and skin conductance (SC)...
June 15, 2017: Journal of Applied Physiology
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