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https://www.readbyqxmd.com/read/28664186/highly-articulated-robotic-needle-achieves-distributed-ablation-of-liver-tissue
#1
Giada Gerboni, Joseph D Greer, Paul F Laeseke, Gloria L Hwang, Allison M Okamura
Robotic needle steering will improve percutaneous radio-frequency ablation (RFA) in the liver by performing distributed ablations without requiring multiple punctures of the liver capsule, thus enabling the treatment of large or multifocal tumors. However, state-of-the-art asymmetric-tip robotic needle steering systems do not yet achieve clinically relevant curvature. This work presents the design and development of a highly articulated needle that enables distributed RFA in liver tissue under ultrasound (US) image guidance...
July 2017: IEEE Robotics and Automation Letters
https://www.readbyqxmd.com/read/28652915/ablation-of-the-sacroiliac-joint-using-mr-guided-high-intensity-focused-ultrasound-a-preliminary-experiment-in-a-swine-model
#2
Elena A Kaye, Majid Maybody, Sebastien Monette, Stephen B Solomon, Amitabh Gulati
BACKGROUND: Dysfunction of the Sacroiliac Joint (SIJ) is one of the key sources of low back pain. For prolonged pain relief, some patients undergo fluoroscopic guided radio-frequency (RF) ablation of SIJ, during which a number of RF probes are inserted to create thermal lesions that disrupt the posterior sacral nerve supply. This procedure is minimally invasive, laborious, time-consuming and costly. To study if High Intensity Focused Ultrasound (HIFU) ablation is a feasible alternative approach to SIJ pain treatment, we performed experiments using HIFU to ablate SIJ in the swine model...
2017: Journal of Therapeutic Ultrasound
https://www.readbyqxmd.com/read/28611425/pancreatic-adenocarcinoma-response-to-chemotherapy-enhanced-with-non-invasive-radio-frequency-evaluated-via-an-integrated-experimental-computational-approach
#3
Matthew J Ware, Louis T Curtis, Min Wu, Jason C Ho, Stuart J Corr, Steven A Curley, Biana Godin, Hermann B Frieboes
Although chemotherapy combined with radiofrequency exposure has shown promise in cancer treatment by coupling drug cytotoxicity with thermal ablation or thermally-induced cytotoxicity, limited access of the drug to tumor loci in hypo-vascularized lesions has hampered clinical application. We recently showed that high-intensity short-wave capacitively coupled radiofrequency (RF) electric-fields may reach inaccessible targets in vivo. This non-invasive RF combined with gemcitabine (Gem) chemotherapy enhanced drug uptake and effect in pancreatic adenocarcinoma (PDAC), notorious for having poor response and limited therapeutic options, but without inducing thermal injury...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28607886/managing-rhinophyma-by-trimodal-therapy-novel-approach
#4
K V Vishwas, Belliappa Pemmanda Raju, Umashankar Nagaraju
Rhinophyma is characterized by nodular thickening of the Nasal skin, sebaceous gland hyperplasia, dilated pores, and in its late stage, fibrosis. In severe cases, it results in loss of normal facial contours, significant disfigurement, and social isolation. Treatment options for severe rhinophyma include cryosurgery, partial-thickness decortications with subsequent secondary reepithelialisation, laser ablation, full thickness resection with graft or flap reconstruction, excision by electrocautery or radio frequency...
June 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28540802/embolisation-of-pulmonary-radio-frequency-pathway-a-randomised-trial
#5
Jean Izaaryene, Julien Mancini, Guillaume Louis, Kathia Chaumoitre, Jean-Michel Bartoli, Vincent Vidal, Jean-Yves Gaubert
PURPOSE: Pneumothorax is the most common complication following a pulmonary percutaneous radiofrequency ablation (RFA), and thoracic drainages are the most frequent causes of an extended hospital stay. Our main objective was to show that the use of gelatin torpedoes may significantly decrease the number of chest tube placement. MATERIALS AND METHODS: Seventy-three patients were prospectively included in this study and then randomised into two groups: 34 with embolisation and without 39 without embolisation...
April 23, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28513144/rapid-elemental-analysis-of-aerosols-using-atmospheric-glow-discharge-optical-emission-spectroscopy
#6
Lina Zheng, Pramod Kulkarni
A new, low-cost approach based on the application of atmospheric radio frequency glow discharge (rf-GD) optical emission spectroscopy (OES) has been developed for near real-time measurement of multielemental concentration in airborne particulate phase. This method involves deposition of aerosol particles on the tip of a cathode in a coaxial microelectrode system, followed by ablation, atomization, and excitation of the particulate matter using the rf-GD. The resulting atomic emissions are recorded using a spectrometer for elemental identification and quantification...
June 8, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28436636/-iodine-131-joint-radio-frequency-ablation-treatment-for-child-with-hyperthyroidism-goiter-one-case-report
#7
Yonghua Chen, Li Liang, Yanlan Fang, Chunlin Wang, Linfa Li, Tian'an Jiang
A 12-year-old girl presented with a history of cervical mass, and one week of throat discomfort and dyspnea. Five years ago, the patient was diagnosed as Hashimoto's thyroiditis and hyperthyroidism; she received antithyroid drug treatment, but the result was not satisfactory. B-ultrasonic showed that the size of thyroid gland was 8.1 cm×3.2 cm in the left and 8.2 cm×4.8 cm in the right. After iodine 131 combined with radiofrequency ablation (RFA) treatment, throat discomfort and recumbent breathing difficulties disappeared, and B-ultrasonic showed that the size of thyroid reduced to 2...
January 25, 2017: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/28324925/non-invasive-imaging-of-ventricular-activation-during-pacing-and-arrhythmia-methods-and-validation
#8
Long Yu, Steven Pogwizd, Bin He
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/28271996/multi-detector-computed-tomography-mdct-findings-of-seven-cases-with-spontaneous-regression-of-hepatocellular-carcinoma
#9
Adel El-Badrawy
PURPOSE: To review Multi-detector CT findings of seven cases with spontaneous regression of hepatocellular carcinomas (HCC). MATERIALS AND METHODS: This retrospective study included 7 patients confirmed with diagnosis of HCC. Triphasic CT scan using multi-detector CT scanner was done for all patients. They were 2 women and 5 men. 1st patient presented with metastatic HCC underwent fine needle aspiration cytology (FNAC) from vertebral metastasis. 2nd patient underwent only one session of trans-arterial chemo-lipidol...
January 2017: Gulf Journal of Oncology
https://www.readbyqxmd.com/read/28240755/mechanical-thrombolysis-as-an-adjunct-therapy-to-management-of-portal-vein-thrombosis-following-radio-frequency-ablation
#10
A O Hairol, C A Affirul, A Azlanudin, Z Zamri, J Razman, S Y Choi
Radiofrequency ablation (RFA) has evolved to become the treatment of choice for non-resectable recurrent colorectal liver metastasis. It is however, not without complications. Portal vein thrombosis following RFA is rare but can be fatal to the outcome of the patient. Here, we present a case of a 66-year-old man who developed portal vein thrombosis following RFA. CT scan revealed a left portal vein thrombosis. This case report highlights the challenges and multimodal treatment of portal vein thrombosis following Radiofrequency ablation (RFA) in a cirrhotic patient...
January 2017: La Clinica Terapeutica
https://www.readbyqxmd.com/read/28226451/non-invasive-imaging-of-ventricular-activation-during-pacing-and-arrhythmia-methods-and-validation
#11
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
#12
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...
May 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28171697/endoscopic-ultrasonography-guided-tumor-ablation
#13
REVIEW
Sundeep Lakhtakia, Dong-Wan Seo
Real-time guidance of needle advancement has transformed endoscopic ultrasound (EUS) 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 tumors...
May 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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
Yasuhiro Shirai, Masahiko Goya, Seiko Ohno, Minoru Horie, Shozaburo Doi, Mitsuaki Isobe, Kenzo Hirao
We report on a patient diagnosed with catechoaminergic polymorphic ventricular tachycardia (CPVT) who underwent catheter ablation of ventricular premature contractions (VPCs) induced by epinephrine. VPCs were classified roughly into three types. Type 1 and Type 2 VPCs (right bundle branch block [RBBB] configuration and inferior axis) were eliminated by radiofrequency 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...
May 2017: 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
#20
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
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