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ultrasound gel

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https://www.readbyqxmd.com/read/28427654/effect-of-high-intensity-ultrasound-on-the-technofunctional-properties-and-structure-of-jackfruit-artocarpus-heterophyllus-seed-protein-isolate
#1
J A Resendiz-Vazquez, J A Ulloa, J E Urías-Silvas, P U Bautista-Rosales, J C Ramírez-Ramírez, P Rosas-Ulloa, L González-Torres
The influence of high-intensity ultrasound (HIU) on the technofunctional properties and structure of jackfruit seed protein isolate (JSPI) was investigated. Protein solutions (10%, w/v) were sonicated for 15min at 20kHz to the following levels of power output: 200, 400, and 600W (pulse duration: on-time, 5s; off-time 1s). Compared with untreated JSPI, HIU at 200W and 400W improved the oil holding capacity (OHC) and emulsifying capacity (EC), but the emulsifying activity (EA) and emulsion stability (ES) increased at 400W and 600W...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28413682/multi-focal-hifu-reduces-cavitation-in-mild-hyperthermia
#2
Vandiver Chaplin, Charles F Caskey
BACKGROUND: Mild-hyperthermia therapy (40-45 °C) with high-intensity focused ultrasound (HIFU) is a technique being considered in a number of different treatments such as thermally activated drug delivery, immune-stimulation, and as a chemotherapy adjuvant. Mechanical damage and loss of cell viability associated with HIFU-induced acoustic cavitation may pose a risk during these treatments or may hinder their success. Here we present a method that achieves mild heating and reduces cavitation by using a multi-focused HIFU beam...
2017: Journal of Therapeutic Ultrasound
https://www.readbyqxmd.com/read/28412552/copper-containing-mesoporous-bioactive-glass-nanoparticles-as-multifunctional-agent-for-bone-regeneration
#3
Alessandra Bari, Nora Bloise, Sonia Fiorilli, Giogia Novajra, Maria Vallet-Regí, Giovanna Bruni, Almudena Torres-Pardo, José M González-Calbet, Livia Visai, Chiara Vitale-Brovarone
The application of mesoporous bioactive glasses (MBGs) containing controllable amount of different ions, with the aim to impart antibacterial activity, as well as stimulation of osteogenesis and angiogenesis, is attracting an increasing interest. In this contribution, in order to endow nano-sized MBG with additional biological functions, the framework of a binary SiO2-CaO mesoporous glass was modified with different concentrations of copper ions (2 and 5% mol.), through a one-pot ultrasound-assisted sol-gel procedure...
April 12, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28411431/simultaneous-removal-of-cd-ii-ni-ii-pb-ii-and-cu-ii-ions-via-their-complexation-with-hbansa-based-on-a-combined-ultrasound-assisted-and-cloud-point-adsorption-method-using-csg-bipo4-fepo4-as-novel-adsorbent-faas-detection-and-optimization-process
#4
Shadi Kheirandish, Mehrorang Ghaedi, Kheibar Dashtian, Ramin Jannesar, Morteza Montazerozohori, Faezeh Pourebrahim, Mohammad Ali Zare
Ultrasound irradiation, cloud point and adsorption methods were coupled to develop a new technique for the simultaneous removal of Cd(II), Ni(II), Pb(II) and Cu(II) ions after their complexation with (E)-4-((2-hydroxybenzylidene) amino) naphthalene-1-sulfonic acid (HBANSA). In order to reduce cost and improve practicability of process, chitosan gel (CSG) composited with bismuth(III) phosphate/iron(III) phosphate nanoparticles (CSG-BiPO4/FePO4) were hydrothermally synthesized followed by their characterization using FE-SEM, EDS and XRD analysis...
March 18, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28411065/modifying-the-physicochemical-properties-of-pea-protein-by-ph-shifting-and-ultrasound-combined-treatments
#5
Shanshan Jiang, Junzhou Ding, Juan Andrade, Taha M Rababah, Ali Almajwal, Mahmoud M Abulmeaty, Hao Feng
The effect of a pH-shifting and ultrasound combined process on the functional properties and structure of pea protein isolate (PPI) was investigated. PPI dispersions were adjusted to pH 2, 4, 10, or 12, treated by power ultrasound for 5min, and incubated for 1h before the sample pH was brought back to neutral. After treatment, water solubility, protein aggregate size, solution turbidity, surface hydrophobicity (Ho), free sulfhydryl content (SH), and sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) of the soluble PPI were determined...
March 28, 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28408818/anti-inflammatory-activity-of-niosomes-entrapped-with-plai-oil-zingiber-cassumunar-roxb-by-therapeutic-ultrasound-in-a-rat-model
#6
Jirakrit Leelarungrayub, Jiradej Manorsoi, Aranya Manorsoi
OBJECTIVE: The aim of this study was to evaluate the antioxidant and anti-inflammatory activities of Plai oil-encapsulated niosomes (Zingiber cassumunar Roxb.) on inflamed subcutaneous Wistar rat skin by therapeutic ultrasound. METHODS: Pure oil from Plai rhizomes was extracted by steam distillation, and antioxidant activities were determined by 2,2-diphenyl-1-picrylhydrazyl radical scavenging assay. Bioactive compounds were analyzed by gas chromatography-mass spectrometry...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28378003/ultrasound-gel-minimizes-third-body-debris-with-partial-hardware-removal-in-joint-arthroplasty
#7
Aidan C McGrory, Lee Replogle, Donald Endrizzi
Hundreds of thousands of revision surgeries for hip, knee, and shoulder joint arthroplasties are now performed worldwide annually. Partial removal of hardware during some types of revision surgeries may create significant amounts of third body metal, polymer, or bone cement debris. Retained debris may lead to a variety of negative health effects including damage to the joint replacement. We describe a novel technique for the better containment and easier removal of third body debris during partial hardware removal...
March 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/28371270/physicochemical-characterization-of-the-shell-composition-of-pbca-based-polymeric-microbubbles
#8
Lia Appold, Yang Shi, Stephan Rütten, Alexander Kühne, Andrij Pich, Fabian Kiessling, Twan Lammers
Microbubbles (MB) are routinely used as contrast agents for ultrasound (US) imaging. In recent years, MB have also attracted interest as drug delivery systems. Soft-shelled lipidic MB tend to be more advantageous for US imaging, while hard-shelled polymeric MB appear to be more suitable for drug delivery purposes because of their thicker shell and the resulting higher drug loading capacity. The physicochemical composition of the shell of polymeric MB, however, remains largely unknown. This study sets out to evaluate the molecular weight and polydispersity of the building blocks constituting the shell of poly(butyl cyanoacrylate) (PBCA) MB...
March 29, 2017: Macromolecular Bioscience
https://www.readbyqxmd.com/read/28370112/solubilization-of-bovine-gelatin-using-power-ultrasound-gelation-without-heating
#9
Asgar Farahnaky, Fatemeh Zendeboodi, Rezvan Azizi, Gholamreza Mesbahi, Mahsa Majzoobi
The aim of this study was to investigate the efficacy of power ultrasound without using any heating stage in solubilizeing gelatin dispersions, and to characterize the mechanical and microstructural properties of the resulting gels using texture analysis and scanning electron microscopy, respectively. Usually to prepare a gel from gelatin, a primary heating stage of at about 40C or above is required to solubilize gelatin macromolecules. In this study solubilizing gelatin dispersions using power ultrasound without any heating was successfully performed...
April 2017: Journal of Texture Studies
https://www.readbyqxmd.com/read/28341954/reversible-alopecia-with-localized-scalp-necrosis-after-accidental-embolization-of-the-parietal-artery-with-hyaluronic-acid
#10
Qing Yang, Lihong Qiu, Chenggang Yi, Ping Xue, Zhou Yu, Xianjie Ma, Yingjun Su, Shuzhong Guo
Hyaluronic acid (HA) filler injection is widely used for soft-tissue augmentation. Complications associated with HA filling are not uncommon; however, HA-induced alopecia is a rarely reported complication that could result in severe secondary psychological trauma. The etiology, clinical traits, treatment strategies, outcomes, and possible reversibility of HA-induced alopecia have not been characterized. Here, we report a case in which bilateral temple injections of 6.5 mL of HA led to persistent pain over the left scalp for several days...
March 24, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28341192/potential-infection-control-risks-associated-with-ultrasound-equipment-a-bacterial-perspective
#11
Susan Campbell Westerway, Jocelyne M Basseal, Adam Brockway, Jon A Hyett, Dee A Carter
Ultrasound equipment used in trans-abdominal (TA) and trans-vaginal (TV) examination may carry bacterial contamination and pose risks to infection control during ultrasound examination. We aimed to describe the prevalence of bacterial contamination on ultrasound probes, gel, machine keyboard and cords and examined the effectiveness of low- and high-level disinfection techniques. This study was performed at a public hospital and a private practice. A total of 171 swabs were analyzed and bacterial species were identified using matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) analysis and polymerase chain reaction (PCR)...
February 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28338392/the-effects-of-low-intensity-therapeutic-ultrasound-litus-on-measurable-outcomes-a-critically-appraised-topic
#12
Sarah Daniels, Gabriela Santiago, Jennifer Cuchna, Bonnie Van Lunen
Therapeutic Ultrasound (US) is a popular modality among healthcare professionals and is used to treat a variety of musculoskeletal conditions.(1) Throughout the past 70 years of clinical use,(2) ultrasound has been shown to be an effective way to decrease pain,(2,3) increase tissue temperature,(4) and decrease tissue stiffness of trigger points,(5) amidst other benefits. Treatment parameters with US are typically high-intensity and occur over a short period of time (minutes). The US machine is large and stationary, forcing patients to be non-mobile for the duration of their treatment...
March 24, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28300858/comparison-of-two-swiss-designed-hyaluronic-acid-gels-six-month-clinical-follow-up
#13
Patrick Micheels, Didier Sarazin, Stéphanie Besse, Badwi Eliasd
The aim of this paper is to compare 2 hyaluronic acid gel fillers from the same Swiss manufacturer and with the same indications: filling of line wrinkles and folds. The products differ by their cross-linking process. With very simple easy-to-reproduce tests, cohesivity and resistance to traction forces were examined. Also, both gels were injected under ultrasound control in the mid reticular dermis of three subjects. The papules were controlled under ultrasound and biopsies at D0 and D15. Results showed significant differences between the 2 gels in all the tests...
February 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28285477/a-novel-ultrasound-transmission-gel-for-resource-constrained-environments
#14
Jonathan D Monti
Ultrasound represents an ideal diagnostic adjunct for medical personnel operating in austere environments, because of its increasing portability and expanding number of point-of-care applications. However, these machines cannot be used without a transmission medium that allows for propagation of ultrasound waves from transducer to patient. This article describes a novel ultrasound gel alternative that may be better suited for resource-constrained environments than standard ultrasound gel, without compromising image quality...
2017: Journal of Special Operations Medicine: a Peer Reviewed Journal for SOF Medical Professionals
https://www.readbyqxmd.com/read/28280664/ultrasound-and-histologic-examination-after-subcutaneous-injection-of-two-volumizing-hyaluronic-acid-fillers-a-preliminary-study
#15
Patrick Micheels, Stéphanie Besse, Didier Sarazin, Pierre Quinodoz, Badwi Elias, Marva Safa, Joan Vandeputte
BACKGROUND: This study examined the influence of hyaluronic acid (HA) crosslinking technology on the ultrasound and histologic behavior of HA fillers designed for subcutaneous injection. METHODS: One subject received subcutaneous injections of 0.25 ml Cohesive Polydensified Matrix (CPM) and Vycross volumizing HA in tissue scheduled for abdominoplasty by bolus and retrograde fanning techniques. Ultrasound analyses were performed on days 0 and 8 and histologic analyses on days 0 and 21 after injection...
February 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28268844/advanced-inside-out-tracking-approach-for-real-time-combination-of-mri-and-us-images-in-the-radio-frequency-shielded-room-using-combination-markers
#16
Yeshaswini Nagaraj, Christian Benedicks, Philipp Matthies, Michael Friebe
For the real-time fusion of different modalities, a variety of tracking methods are available including the optical, electromagnetic (EM) and image-based tracking. But as a drawback optical tracking suffers from line of sight issues and EM tracking requires the manual referencing for the fusion procedure and is not usable in Magnetic Resonance Imaging (MRI) environment. To avoid these issues, we propose a real-time setup containing a camera capable of inside-Out tracking using combined circular markers attached to Ultrasound (US) probe and a suitable platform for automatic overlay of MRI and US image using markers...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28254290/electrically-conductive-gel-fibers-composite-scaffold-with-graded-properties
#17
Sajedeh Khorshidi, Akbar Karkhaneh
Gradient biomaterials have emerged as fascinating platforms to satisfy the need for imitation of ubiquitous gradients in biology, especially those found at tissue interfaces. In the current study, a gradient fiber-hydrogel scaffold was fabricated to imitate the extracellular matrix of soft-to-hard tissue interfaces. For the fiber proportion, a gradient electrospinning was developed where controlled mixing of solutions with dissimilar concentration of a conductive polymer in injection vessel imparted a composition gradient to electrospinning jet, and thus electrospun fibers...
May 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28236117/3d-ultrasound-registration-based-visual-servoing-for-neurosurgical-navigation
#18
Oliver Zettinig, Benjamin Frisch, Salvatore Virga, Marco Esposito, Anna Rienmüller, Bernhard Meyer, Christoph Hennersperger, Yu-Mi Ryang, Nassir Navab
PURPOSE: We present a fully image-based visual servoing framework for neurosurgical navigation and needle guidance. The proposed servo-control scheme allows for compensation of target anatomy movements, maintaining high navigational accuracy over time, and automatic needle guide alignment for accurate manual insertions. METHOD: Our system comprises a motorized 3D ultrasound (US) transducer mounted on a robotic arm and equipped with a needle guide. It continuously registers US sweeps in real time with a pre-interventional plan based on CT or MR images and annotations...
February 24, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28227042/advanced-inside-out-tracking-approach-for-real-time-combination-of-mri-and-us-images-in-the-radio-frequency-shielded-room-using-combination-markers
#19
Yeshaswini Nagaraj, Christian Benedicks, Philipp Matthies, Michael Friebe, Yeshaswini Nagaraj, Christian Benedicks, Philipp Matthies, Michael Friebe
For the real-time fusion of different modalities, a variety of tracking methods are available including the optical, electromagnetic (EM) and image-based tracking. But as a drawback optical tracking suffers from line of sight issues and EM tracking requires the manual referencing for the fusion procedure and is not usable in Magnetic Resonance Imaging (MRI) environment. To avoid these issues, we propose a real-time setup containing a camera capable of inside-Out tracking using combined circular markers attached to Ultrasound (US) probe and a suitable platform for automatic overlay of MRI and US image using markers...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28210379/two-crosslinking-technologies-for-superficial-reticular-dermis-injection-a-comparative-ultrasound-and-histologic-study
#20
Patrick Micheels, Stéphanie Besse, Didier Sarazin
Background: Few hyaluronic acid fillers have been developed for superficial injection. Objective: To compare the diffusion and integration properties of cohesive polydensified matrix and Vycross® technology hyaluronic acid fillers with lidocaine following injection into the superficial reticular dermis. Methods and materials: Two subjects received two injections each of cohesive polydensified matrix and Vycross® hyaluronic acid (0.2mL/site) in the superficial reticular dermis of the buttock under ultrasound control...
January 2017: Journal of Clinical and Aesthetic Dermatology
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