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https://www.readbyqxmd.com/read/28237869/the-role-of-image-guided-therapy-in-the-management-of-colorectal-cancer-metastatic-disease
#1
REVIEW
Thierry de Baere, Lambros Tselikas, Steven Yevich, Valérie Boige, Frederic Deschamps, Michel Ducreux, Diane Goere, France Nguyen, David Malka
The European Society for Medical Oncology (ESMO) have stressed that the option for treating oligometastatic disease is a strategy of local ablative therapy, the goal of which is to improve disease control. The spectrum of the local ablative therapy toolbox described by the ESMO includes surgical R0 resection, percutaneous ablation and intra-arterial therapies, the choice of treatment being left to the multidisciplinary team. Interventional therapy involving image-guided treatment offers the possibility of less invasive treatments for colorectal cancer metastases in the liver, lung and bone by preserving from toxicity distant healthy organs or even parts of the diseased organs...
February 23, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28222392/endor-with-band-selective-shaped-inversion-pulses
#2
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/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
#3
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
https://www.readbyqxmd.com/read/28217060/ultrasonography-guided-pulsed-radiofrequency-of-sciatic-nerve-for-the-treatment-of-complex-regional-pain-syndrome-type-ii
#4
Yi Hwa Choi, Dong Jin Chang, Woon Suk Hwang, Jin Hwan Chung
Although the major mechanism of complex regional pain syndrome (CRPS) involves dysfunctional central or sympathetic nervous system activation, the peripheral nervous system also contributes significantly to its clinical manifestations. Pulsed radiofrequency (PRF) is a recently developed treatment option for neuropathic pain syndromes. Here, we report a case of CRPS Type II after a femur fracture and sciatic nerve injury, in which the pain was treated successfully with ultrasonography-guided selective sciatic nerve PRF application...
January 2017: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/28209507/ultrasound-guided-pulsed-radiofrequency-stimulation-of-posterior-tibial-nerve-a-potential-novel-intervention-for-recalcitrant-plantar-fasciitis
#5
Yung-Tsan Wu, Chih-Ya Chang, Yu-Ching Chou, Chun-Chang Yeh, Tsung-Ying Li, Heng-Yi Chu, Liang-Cheng Chen
OBJECTIVE: To evaluate the therapeutic benefit of ultrasound-guided pulsed radiofrequency (PRF) stimulation at the posterior tibial nerve (PTN) in patients with recalcitrant plantar fasciitis (PF). DESIGN: A prospective, randomized, double-blinded, placebo-controlled trial (12-week follow-up). SETTING: Outpatient of local medical center settings. PARTICIPANTS: Thirty-six patients with recalcitrant PF were randomized and 36 participants were included in the final data analysis...
February 13, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28204748/successful-pulsed-radiofrequency-for-lumbosacral-radicular-pain-not-so-easy-to-predict
#6
Ulderico Freo, Giuseppe Calcarella
No abstract text is available yet for this article.
February 1, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28202630/targets-and-end-points-in-cardiac-autonomic-denervation-procedures
#7
Esteban W Rivarola, Denise Hachul, Tan Wu, Cristiano Pisani, Carina Hardy, Fabrizio Raimundi, Sissy Melo, Francisco Darrieux, Mauricio Scanavacca
BACKGROUND: Autonomic denervation is an alternative approach for patients with symptomatic bradycardia. No consensus exists on the critical targets and end points of the procedure. The aim of this study was to identify immediate end points and critical atrial regions responsible for vagal denervation. METHODS AND RESULTS: We enrolled 14 patients (50% men; age: 34.0±13.8 years) with cardioinhibitory syncope, advanced atrioventricular block or sinus arrest, and no structural heart disease...
February 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28195684/extended-rf-shimming-sequence-level-parallel-transmission-optimization-applied-to-steady-state-free-precession-mri-of-the-heart
#8
Arian Beqiri, Anthony N Price, Francesco Padormo, Joseph V Hajnal, Shaihan J Malik
Cardiac magnetic resonance imaging (MRI) at high field presents challenges because of the high specific absorption rate and significant transmit field (B1(+) ) inhomogeneities. Parallel transmission MRI offers the ability to correct for both issues at the level of individual radiofrequency (RF) pulses, but must operate within strict hardware and safety constraints. The constraints are themselves affected by sequence parameters, such as the RF pulse duration and TR, meaning that an overall optimal operating point exists for a given sequence...
February 14, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28195663/optimization-of-inhomogeneous-magnetization-transfer-ihmt-mri-contrast-for-preclinical-studies-using-dipolar-relaxation-time-t1d-filtering
#9
V H Prevost, O M Girard, S Mchinda, G Varma, D C Alsop, G Duhamel
A pulsed inhomogeneous magnetization transfer (ihMT)-prepared fast imaging sequence was implemented at 11.75 T for preclinical studies on mouse central nervous system. A strategy based on filtering the ihMT signal originating from short dipolar relaxation time (T1D ) components is proposed. It involves increasing the repetition time of consecutive radiofrequency (RF) pulses of the dual saturation and allows improved signal specificity for long T1D myelinated structures. Furthermore, frequency offset, power and timing saturation parameters were adjusted to optimize the ihMT sensitivity...
February 14, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28186832/a-comprehensive-review-of-pulsed-radiofrequency-in-the-treatment-of-pain-associated-with-different-spinal-conditions
#10
Giancarlo Facchini, Paolo Spinnato, Giuseppe Guglielmi, Ugo Albisinni, Alberto Bazzocchi
OBJECTIVE: The objective of this review is to evaluate the efficacy of Pulsed Radiofrequency (PRF) treatment of pain associated with different spinal conditions. The mechanisms of action and biological effects are shortly discussed to provide the scientific basis for this radiofrequency modality. METHODS: We systematically searched for clinical studies on spinal clinical conditions using PRF. We searched the MEDLINE (PubMed) database. We classified the information in one table focusing on RCTs and other type of studies...
February 10, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28162730/-475-pulsed-radiofrequency-of-brachial-plexus-for-the-treatment-of-refractory-shoulder-pain
#11
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/28158164/rapid-and-delayed-effects-of-pulsed-radiofrequency-on-neuropathic-pain-electrophysiological-molecular-and-behavioral-evidence-supporting-long-term-depression
#12
Ren-Yu Huang, Chia-Chi Liao, Shih-Ying Tsai, Chen-Tung Yen, Chii-Wann Lin, Tsung-Chi Chen, Wei-Tso Lin, Chi-Heng Chang, Yeong-Ray Wen
BACKGROUND: Pulsed radiofrequency (PRF) has been widely employed for ameliorating clinical neuropathic pain. How PRF alters electrophysiological transmission and modulates biomolecular functions in neural tissues has yet to be clarified. We previously demonstrated that an early application of low-voltage bipolar PRF adjacent to the dorsal root ganglion (DRG) reduced acute neuropathic pain in animals. By contrast, the present study investigated how PRF alters postsynaptic sensitization to produce early and delayed effects on neuropathic pain...
February 2017: Pain Physician
https://www.readbyqxmd.com/read/28153256/characterization-of-thin-film-tandem-solar-cells-by-radiofrequency-pulsed-glow-discharge-time-of-flight-mass-spectrometry
#13
Beatriz Fernandez, Lara Lobo, Nies Reininghaus, Rosario Pereiro, Alfredo Sanz-Medel
Beside low production costs and the use of nontoxic and abundant raw materials, silicon based thin-film solar cells have the advantage to be built up as multi junction devices like tandem or triple junction solar cells. Silicon thin film modules made of tandem cells with hydrogenated amorphous silicon (a-Si:H) top cell and microcrystalline (μc) Si:H bottom cell are available on the market. In this work, the analytical potential of state-of-the art radiofrequency (rf) pulsed glow discharge (PGD) time of flight mass spectrometry (TOFMS) commercial instrumentation is investigated for depth profiling analysis of tandem-junctions solar cells on 2mm thick glass substrate with 1µm thick ZnO:Al...
April 1, 2017: Talanta
https://www.readbyqxmd.com/read/28151904/comparison-between-ultrasound-guided-interfascial-pulsed-radiofrequency-and-ultrasound-guided-interfascial-block-with-local-anesthetic-in-myofascial-pain-syndrome-of-trapezius-muscle
#14
RANDOMIZED CONTROLLED TRIAL
Ik Tae Cho, Yun Woo Cho, Sang Gyu Kwak, Min Cheol Chang
Myofascial pain syndrome (MPS) of the trapezius muscle (TM) is a frequently occurring musculoskeletal disorder. However, the treatment of MPS of the TM remains a challenge. We investigated the effects of ultrasound (US)-guided pulsed radiofrequency (PRF) stimulation on the interfascial area of the TM. In addition, we compared its effect with that of interfascial block (IFB) with 10 mL of 0.6% lidocaine on the interfascial area of the TM. Thirty-six patients with MPS of the TM were included and randomly assigned into 2 groups...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28150877/spectral-characteristics-of-semisolid-protons-in-human-brain-white-matter-at-7-t
#15
Xu Jiang, Peter van Gelderen, Jeff H Duyn
PURPOSE: To inform the quantification of MRI magnetization transfer contrast at high field by measuring the spectral characteristics of (1) H protons in semisolids in human brain at 7 T, while avoiding prohibitive radiofrequency (RF) tissue heating and confounding effects from chemical exchange. METHODS: Saturation-recovery type experiments were performed using brief, frequency-specific RF pulses that saturate semisolid proton magnetization. Analysis of the subsequent recovery of water proton magnetization with a two-pool model of exchange allowed the study of spectral characteristics of semisolid protons...
February 2, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28144594/effects-of-rf-emf-exposure-from-gsm-mobile-phones-on-proliferation-rate-of-human-adipose-derived-stem-cells-an-in-vitro-study
#16
D Shahbazi-Gahrouei, B Hashemi-Beni, Z Ahmadi
BACKGROUND: As the use of mobile phones is increasing, public concern about the harmful effects of radiation emitted by these devices is also growing. In addition, protection questions and biological effects are among growing concerns which have remained largely unanswered. Stem cells are useful models to assess the effects of radiofrequency electromagnetic fields (RF-EMF) on other cell lines. Stem cells are undifferentiated biological cells that can differentiate into specialized cells...
December 2016: Journal of Biomedical Physics & Engineering
https://www.readbyqxmd.com/read/28143574/feasibility-of-real-time-mr-thermal-dose-mapping-for-predicting-radiofrequency-ablation-outcome-in-the-myocardium-in-vivo
#17
Solenn Toupin, Pierre Bour, Matthieu Lepetit-Coiffé, Valéry Ozenne, Baudouin Denis de Senneville, Rainer Schneider, Alexis Vaussy, Arnaud Chaumeil, Hubert Cochet, Frédéric Sacher, Pierre Jaïs, Bruno Quesson
BACKGROUND: Clinical treatment of cardiac arrhythmia by radiofrequency ablation (RFA) currently lacks quantitative and precise visualization of lesion formation in the myocardium during the procedure. This study aims at evaluating thermal dose (TD) imaging obtained from real-time magnetic resonance (MR) thermometry on the heart as a relevant indicator of the thermal lesion extent. METHODS: MR temperature mapping based on the Proton Resonance Frequency Shift (PRFS) method was performed at 1...
January 25, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28139149/efficacy-of-multi-polar-radiofrequency-rf-with-pulsed-magnetic-field-therapy-for-the-treatment-of-abdominal-cellulite
#18
Rungsima Wanitphakdeedecha, Angkana Sathaworawong, Woraphong Manuskiatti, Neil S Sadick
INTRODUCTION: Cellulite is a metabolic condition, predominately seen in females, that affects the subcutaneous tissue of the posterolateral thighs, buttocks, pelvic region, and abdomen. This condition has a distinct histologic pathology compared to obesity, that is characterized by skin dimpling and lumpiness resembling an orange peel. Despite the wide range of treatment options for cellulite, there is paucity of empirical data supporting their efficacy. The objective of this study was to evaluate the efficacy of a new generation multipolar radiofrequency device for the treatment of cellulite...
January 31, 2017: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/28128685/scar-remodeling-with-the-association-of-monopolar-capacitive-radiofrequency-electric-stimulation-and-negative-pressure
#19
Giovanni Nicoletti, Paola Perugini, Sara Bellino, Priscilla Capra, Alberto Malovini, Omar Jaber, Marco Tresoldi, Angela Faga
OBJECTIVE: A study was established to objectively assess the effects of low-intensity electromagnetic and electric stimulation plus negative pressure on mature scars. BACKGROUND: Radiofrequency plus negative pressure therapy demonstrated a favorable reorganization and regeneration of the collagen and elastic fibers and was proposed for the treatment of cellulitis and skin stretch marks. METHODS: Twenty-six mature scars in 20 Caucasian patients (15 females and 5 males) were enrolled in the study...
January 24, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28113578/2d-versus-3d-cross-correlation-based-radial-and-circumferential-strain-estimation-using-multiplane-2d-ultrafast-ultrasound-in-a-3d-atherosclerotic-carotid-artery-model
#20
Stein Fekkes, Abigail E S Swillens, Hendrik H G Hansen, Anne E C M Saris, Maartje M Nillesen, Francesco Iannaccone, Patrick Segers, Chris L de Korte
Three-dimensional strain estimation might improve the detection and localization of high strain regions in the carotid artery for identification of vulnerable plaques. This study compares 2D vs. 3D displacement estimation in terms of radial and circumferential strain using simulated ultrasound images of a patient specific 3D atherosclerotic carotid artery model at the bifurcation embedded in surrounding tissue generated with ABAQUS software. Global longitudinal motion was superimposed to the model based on literature data...
August 25, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
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