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https://www.readbyqxmd.com/read/28231372/radiofrequency-turbinate-volume-reduction-vs-radiofrequency-assisted-turbinectomy-for-nasal-obstruction-caused-by-inferior-turbinate-hypertrophy
#1
Saumitra Kumar, Trivender Singh Anand, Indranil Pal
Radiofrequency procedures are a well-accepted treatment for nasal obstruction. We conducted a randomized, noncontrolled study to compare the effectiveness of submucosal bipolar radiofrequency turbinate volume reduction (RFTVR) and bipolar radiofrequency-assisted turbinectomy (RFaT) in patients presenting with nasal obstruction caused by inferior turbinate hypertrophy. A total of 30 patients-15 males and 15 females, aged 15 to 60 years (mean: 32)-were randomly divided into one of the two homogeneous treatment groups...
February 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28230011/changes-of-cd4-t-cell-subsets-after-radiofrequency-ablation-in-lung-cancer-and-its-significance
#2
Wang Shaobin, Xiong Yu, Lin Jiatian, Chen Zaizhong, Dai Luping, Chen Junhui
AIMS: To analyze the changes of CD4+ T-cell subsets following radiofrequency ablation (RFA) in lung cancer and the impact of RFA on the antitumor immunity. SUBJECTS AND METHODS: Flow cytometry was employed to detect CD4+ T-cell subsets in the peripheral blood from 45 healthy controls and 45 lung cancer patients before and after RFA. The correlation between CD4+ T-cell subsets and the clinical characteristics was discussed by comparing the results between different groups...
December 2016: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28230009/effect-of-heat-sink-on-the-recurrence-of-small-malignant-hepatic-tumors-after-radiofrequency-ablation
#3
Zheng-Yu Lin, Guo-Lin Li, Jin Chen, Zhong-Wu Chen, Yi-Ping Chen, Sun-Zhi Lin
AIMS: The aim of this study was to investigate the effect of heat sink on the recurrence of hepatic malignant tumors <3 cm after percutaneous radiofrequency ablation (RFA). SUBJECTS AND METHODS: This study included 564 hepatic malignant tumors <3 cm in 381 patients. Preoperative images were used to determine whether these tumors were adjacent to vessels, and the diameter of adjacent vessels was measured. RFA was performed computed tomography (CT), magnetic resonance imaging (MRI) and ultrasound (US) guidance, and postoperative imaging follow-up was then conducted...
December 2016: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28230007/laparoscopic-combined-with-percutaneous-ablation-for-hepatocellular-carcinoma-under-liver-capsule-a-single-chinese-center-experience-of-thirty-patients
#4
Zhe Tang, Yi Zhu, Kezhong Tang, Linping Dong, Bin Yang, Heqin Fang, Yulian Wu, Bo Zhang
AIM OF STUDY: For the tumor lesions close to capsule of the liver, traditional percutaneous radiofrequency ablation (PRFA) is limited due to high incidence of postoperative complications. The aim of the present study is to whether laparoscopic combined with PRFA (LCPR) could effectively ablate the tumor lesions close to capsule of the liver. METHODS: A total of 119 patients with subcapsular hepatocellular carcinoma (HCC) were divided into two groups: PRFA group (89 patients) and LCPR group (30 patients)...
December 2016: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28230006/evaluation-of-the-safety-and-efficacy-of-percutaneous-radiofrequency-ablation-for-treating-multiple-breast-fibroadenoma
#5
Ping Li, Tang Xiao-Yin, Dan Cui, Jia-Chang Chi, Zhi Wang, Tao Wang, Xing-Xing Qi, Bo Zhai
BACKGROUND: This study was conducted to evaluate the safety and efficacy of ultrasound (US)-guided percutaneous radiofrequency ablation (RFA) for multiple breast fibroadenoma as an alternative to surgical resection. PATIENTS AND METHODS: Sixty-five patients with multiple breast fibroadenoma accepted general anesthesia and US-guided percutaneous RFA in our hospital from September 2014 to January 2016. Contrast-enhanced US (CEUS) was used immediately after operation to determine whether the tumor was ablated completely...
December 2016: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28229202/double-ventricular-response-in-dual-av-nodal-pathways-mimicking-interpolated-premature-beat
#6
J-X Li, Q Chen, J-X Hu, J-H Yu, P Li, K Hong, Q-H Wu, Y-Q Wu, X-S Cheng
Double ventricular response in dual atrioventricular (AV) nodal pathways can result in nonreentrant supraventricular tachycardia. Since this condition was first described in 1979, around 20 cases have been reported. Here, we present the case of a patient with a confirmed diagnosis of double ventricular response in dual AV nodal pathways resembling an interpolated premature beat who underwent successful radiofrequency ablation of the slow pathway.
February 22, 2017: Herz
https://www.readbyqxmd.com/read/28229076/locoregional-therapies-of-cholangiocarcinoma
#7
REVIEW
Christof M Sommer, Hans U Kauczor, Philippe L Pereira
BACKGROUND: Cholangiocarcinoma (CC) is the second most primary liver malignancy with increasing incidence in Western countries. Currently, surgical R0 resection is regarded as the only potentially curative treatment. The results of systemic chemotherapy and best supportive care (BSC) in patients with metastatic disease are often disappointing in regard to toxicity, oncologic efficacy, and overall survival. In current practice, the use of different locoregional therapies is increasingly more accepted...
December 2016: Visceral Medicine
https://www.readbyqxmd.com/read/28228428/the-effect-of-aggressive-blood-pressure-control-on-the-recurrence-of-atrial-fibrillation-after-catheter-ablation-a-randomized-open-label-clinical-trial-substrate-modification-with-aggressive-blood-pressure-control-smac-af
#8
Ratika Parkash, George A Wells, John L Sapp, Jeffrey S Healey, Jean-Claude Tardif, Isabelle Greiss, Léna Rivard, Jean-Francois Roux, Lorne Gula, Isabelle Nault, Paul G Novak, David H Birnie, Andrew C Ha, Stephen B Wilton, Iqwal Mangat, Christopher J Gray, Martin J Gardner, Anthony S L Tang
Background -Radiofrequency catheter ablation for atrial fibrillation has become an important therapy for AF, however recurrence rates remain high. We proposed to determine whether aggressive blood pressure (BP) lowering prevents recurrent atrial fibrillation (AF) after catheter ablation in patients with AF and a high symptom burden. Methods -We randomly assigned 184 patients with AF and a BP greater than 130/80 mmHg to aggressive BP (target <120/80 mm Hg) or standard BP treatment (target <140/90 mmHg) prior to their scheduled AF catheter ablation...
February 22, 2017: Circulation
https://www.readbyqxmd.com/read/28227677/multipoint-temperature-monitoring-in-liver-undergoing-computed-tomography-guided-radiofrequency-ablation-with-fiber-bragg-grating-probes
#9
P Saccomandi, E Schena, M Diana, F M Di Matteo, G Costamagna, J Marescaux, P Saccomandi, E Schena, M Diana, F M Di Matteo, G Costamagna, J Marescaux, F M Di Matteo, J Marescaux, E Schena, M Diana, G Costamagna, P Saccomandi
In this work, we investigated the temperature increment experienced by biological tissue during radiofrequency ablation (RFA). The measurements were performed by using two custom-made thermal probes based on fiber optic sensors (fiber Bragg gratings, FBGs). The two probes embed a total of 9 FBGs. Experiments were performed during RFA of an ex vivo healthy porcine liver. The RFA heating module was equipped with 5 thermocouples. Results show that the temperature increment close to the applicator (i.e., 0.6 cm-0...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227421/spectral-based-pneumonia-detection-tool-using-ultrasound-data-from-pediatric-populations
#10
O Zenteno, B Castaneda, R Lavarello, O Zenteno, B Castaneda, R Lavarello, B Castaneda, O Zenteno, R Lavarello
Pediatric Pneumonia is one of the principal causes of death by year on children under the age of five worldwide. The diagnosis is commonly made by clinical criteria with support from imaging tools like radiography. Lung ultrasound has been considered a low-cost and portable alternative for pneumonia imaging; however, interpretation is subjective and requires adequate training. In the present work, a pneumonia detection algorithm based on the measurement of the fundamental bandwidth downshift over depth of ultrasound radiofrequency (RF) signals is presented...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227205/low-frequency-ultrasound-radiosensitization-and-therapy-response-monitoring-of-tumors-an-in-vivo-study
#11
Ali Sadeghi-Naini, Martin Stanisz, Hadi Tadayyon, Jaswinder Taank, Gregory J Czarnota, Ali Sadeghi-Naini, Martin Stanisz, Hadi Tadayyon, Jaswinder Taank, Gregory J Czarnota, Jaswinder Taank, Hadi Tadayyon, Martin Stanisz, Ali Sadeghi-Naini, Gregory J Czarnota
A new framework has been introduced in this paper for tumor radiosensitization and therapy response monitoring using low-frequency ultrasound. Human fibrosarcoma xenografts grown in severe combined immunodeficiency (SCID) mice (n = 108) were treated using ultrasound-stimulated microbubbles at various concentration and exposed to different doses of radiation. Low-frequency ultrasound radiofrequency (RF) data were acquired from tumors prior to and at different times after treatment. Quantitative ultrasound (QUS) techniques were applied to generate spectral parametric maps of tumors...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226994/high-dielectric-material-in-mri-numerical-assessment-of-the-reduction-of-the-induced-local-power-on-implanted-cardiac-leads
#12
Eugenio Mattei, Elena Lucano, Federica Censi, Leonardo M Angelone, Giovanni Calcagnini, Eugenio Mattei, Elena Lucano, Federica Censi, Leonardo M Angelone, Giovanni Calcagnini, Eugenio Mattei, Giovanni Calcagnini, Elena Lucano, Leonardo M Angelone, Federica Censi
High dielectric materials (HDM) have been proposed in magnetic resonance imaging (MRI) to increase the signal-to-noise ratio (SNR) of the images acquired while reducing the radiofrequency (RF) absorption in tissue. The aim of this study is to assess the potential merit of using HDM to reduce power induced at the tip of an endocardial lead in patients undergoing MRI. Numerical simulations were performed using a commercial finite-differences time-domain (FDTD) software to model the RF field generated by a birdcage body coil at 64 MHz on a human body model...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226542/towards-patient-specific-modelling-of-lesion-formation-during-radiofrequency-catheter-ablation-for-atrial-fibrillation
#13
Navjeevan Soor, Ross Morgan, Marta Varela, Oleg V Aslanidi, Navjeevan Soor, Ross Morgan, Marta Varela, Oleg V Aslanidi, Marta Varela, Navjeevan Soor, Ross Morgan, Oleg V Aslanidi
Radiofrequency catheter ablation procedures are a first-line method of clinical treatment for atrial fibrillation. However, they suffer from suboptimal success rates and are also prone to potentially serious adverse effects. These limitations can be at least partially attributed to the inter- and intra-patient variations in atrial wall thickness, and could be mitigated by patient-specific approaches to the procedure. In this study, a modelling approach to optimising ablation procedures in subject-specific 3D atrial geometries was applied...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226508/temperature-monitoring-during-radiofrequency-ablation-of-liver-in-vivo-trials
#14
P Saccomandi, G Frauenfelder, C Massaroni, M A Caponera, A Polimadei, F Taffoni, F M Di Matteo, G Costamagna, F Giurazza, E Schena, P Saccomandi, G Frauenfelder, C Massaroni, M A Caponera, A Polimadei, F Taffoni, F M Di Matteo, G Costamagna, F Giurazza, E Schena, F Taffoni, F M Di Matteo, F Giurazza, E Schena, G Costamagna, A Polimadei, G Frauenfelder, P Saccomandi, C Massaroni
Radiofrequency ablation (RFA) is a minimally invasive procedure used to treat tumors by means of hyperthermia, mostly through percutaneous approach. The tissue temperature plays a pivotal role in the achievement of the target volume heating, while sparing the surrounding healthy tissue from thermal damage. Several techniques for thermometry during RFA are investigated, most of them based on the use of single-point measurement system (e.g., thermocouples). The measurement of temperature map is crucial for the real-time control and fine adjustment of the treatment settings, to optimize the shape and size of the ablated volume...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226000/efficacy-and-safety-of-a-single-radiofrequency-ablation-of-solid-benign-non-functioning-thyroid-nodules
#15
Roberto Cesareo, Andrea Palermo, Valerio Pasqualini, Carla Simeoni, Alessandro Casini, Giuseppe Pelle, Silvia Manfrini, Giuseppe Campagna, Roberto Cianni
Objective: The objective of our study is to evaluate the clinical outcomes and safety of radiofrequency thermal ablation (RFA) for benign thyroid nodules (BTNs) over a 1-year follow-up. Subjects and methods: This is a monocentric retrospective study. Forty-eight patients with solid, non-functioning BTNs were treated by RFA using a 17G internally cooled electrode. We categorized thyroid nodules as small (≤ 12 mL), medium (12 to 30 mL), or large (over 30 mL). BTNs volume reduction, thyroid function, cosmetic and compressive score changes and side effect evaluation at 6 and 12 months were evaluated...
February 13, 2017: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28223846/prospect-of-the-use-of-checkpoint-inhibitors-in-hepatocellular-cancer-treatments
#16
REVIEW
Ali Raufi, Maria Tria Tirona
Hepatocellular cancer (HCC) is a very fatal disease due to limited therapeutic options as well as due to its association with underlying chronic liver disease in the majority of cases. The immune evasion in HCC signifies a major barrier to the delivery of effective immunotherapy. Sorafenib is the only Food and Drug Administration-approved drug available with an overall response rate of 2%-3% and overall survival of 2.8 months. Chemotherapy has not been used routinely because of the relative refractoriness of advanced HCC...
2017: Cancer Management and Research
https://www.readbyqxmd.com/read/28223839/ultrasound-guided-alcohol-neurolysis-and-radiofrequency-ablation-of-painful-stump-neuroma-effective-treatments-for-post-amputation-pain
#17
Xin Zhang, Yongming Xu, Jin Zhou, Shaofeng Pu, Yingying Lv, Yueping Chen, Dongping Du
BACKGROUND: Post-amputation pain (PAP) is highly prevalent after limb amputation, and stump neuromas play a key role in the generation of the pain. Presently, PAP refractory to medical management is frequently treated with minimally invasive procedures guided by ultrasound, such as alcohol neurolysis and radiofrequency ablation (RFA). OBJECTIVE: To record the immediate and long-term efficacy of alcohol neurolysis and RFA. We first used alcohol neurolysis and then, when necessary, we performed RFA on PAP patients...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28222392/endor-with-band-selective-shaped-inversion-pulses
#18
Claudia E Tait, Stefan Stoll
Electron Nuclear DOuble Resonance (ENDOR) is based on the measurement of nuclear transition frequencies through detection of changes in the polarization of electron transitions. In Davies ENDOR, the initial polarization is generated by a selective microwave inversion pulse. The rectangular inversion pulses typically used are characterized by a relatively low selectivity, with full inversion achieved only for a limited number of spin packets with small resonance offsets. With the introduction of pulse shaping to EPR, the rectangular inversion pulses can be replaced with shaped pulses with increased selectivity...
February 12, 2017: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/28220946/light-and-energy-based-therapeutics-for-genitourinary-syndrome-of-menopause-consensus-and-controversies
#19
Yona Tadir, Adrian Gaspar, Ahinoam Lev-Sagie, Macrene Alexiades, Red Alinsod, Alex Bader, Alberto Calligaro, Jorge A Elias, Marco Gambaciani, Jorge E Graviria, Cheryl B Iglesia, Ksenija Selih-Martinec, Patricia L Mwesigwa, Urska B Ogrinc, Stefano Salvatore, Paolo Scollo, Nicola Zerbinati, John Stuart Nelson
Gynecologist and plastic surgeons pioneered the application of lasers in medicine and surgery almost 5 decades ago, initially used to treat cervical and vaginal pathologies. Ever since, energy-based devices have been deployed to treat pelvic pathologies and improve fertility. Recent technological developments triggered an unprecedented wave of publications, assessing the efficacy of fractional laser, and radiofrequency on the vaginal wall in reversing natural aging processes. Studies have shown that a certain degree of thermal energy deposited on the vaginal wall stimulates proliferation of the glycogen-enriched epithelium, neovascularization, and collagen formation in the lamina propria, and improves natural lubrication and control of urination...
February 21, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28220602/mexametric-and-cutometric-assessment-of-the-signs-of-aging-of-the-skin-area-around-the-eyes-after-the-use-of-non-ablative-fractional-laser-non-ablative-radiofrequency-and-intense-pulsed-light
#20
Anna Maria Kołodziejczak, Helena Rotsztejn
The assessment of the signs of aging within eyes area in cutometric (skin elasticity) and mexametric (discoloration and severity of erythema) examination after the treatment with: non-ablative fractional laser, non-ablative radiofrequency (RF) and intense light source (IPL). This study included 71 patients, aged 33-63 years (the average age was 45.81) with Fitzpatrick skin type II and III. 24 patients received 5 successive treatment sessions with a 1,410-nm non-ablative fractional laser in two-week intervals, 23 patients received 5 successive treatment sessions with a non-ablative RF in one-week intervals and 24 patients received 5 successive treatment sessions with an IPL in two-week intervals...
February 21, 2017: Dermatologic Therapy
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