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https://www.readbyqxmd.com/read/28917262/determination-of-several-element-levels-in-hardaliye-beverages-using-flame-atomic-absorption-spectrometry-after-ultrasound-probe-extraction
#1
Dilek Bakircioglu, Nukte Topraksever, Yasemin Bakircioglu Kurtulus
In the present study, concentrations of calcium (Ca), copper (Cu), magnesium (Mg), manganese (Mn), sodium (Na), and zinc (Zn) in hardaliye samples produced in Turkey were determined by flame atomic absorption spectrometry after ultrasound probe extraction (UPE), microwave-assisted extraction (MAE), and wet extraction procedures. At present, there is limited work in the literature on UPE for the determination of trace elements in beverage samples. Our single-correlation analysis showed that the elements studied with the UPE method in hardaliye were strongly correlated with the MAE procedure...
September 1, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28894262/role-of-sonication-pre-treatment-and-cation-valence-in-the-sol-gel-transition-of-nano-cellulose-suspensions
#2
C A Maestri, M Abrami, S Hazan, E Chistè, Y Golan, J Rohrer, A Bernkop-Schnürch, M Grassi, M Scarpa, P Bettotti
Sol-gel transition of carboxylated cellulose nanocrystals has been investigated using rheology, SAXS, NMR and optical spectroscopies to unveil the distinctive roles of ultrasound treatments and addition of various cations. Besides cellulose fiber fragmentation, sonication treatment induces fast gelling of the solution. The gelation is independent of the addition of cations, while the final rheological properties are highly influenced by the type, concentration and sequence of the operations since the cations must be added prior to sonication to produce stiff gels...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28892255/does-cardiovascular-risk-vary-according-to-the-criteria-for-a-diagnosis-of-polycystic-ovary-syndrome
#3
Sedef Ramoglu, Tevfik Yoldemir, Kemal Atasayan, Dilek Gogas Yavuz
AIM: The risk of cardiovascular disease is higher in women with polycystic ovary syndrome (PCOS) compared to healthy individuals. Chronic inflammation, insulin resistance, hyperandrogenemia, hyperlipidemia and increased oxidative stress are known to have a role in the formation of atherosclerosis and cardiovascular disease. The aim of our study was to evaluate if cardiovascular risk varied according to different PCOS criteria, using carotid intima-media thickness (CIMT), which is an important marker of major cardiovascular events in the later stages of life...
September 11, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28880170/rapid-spatial-mapping-of-focused-ultrasound-fields-using-a-planar-fabry-p%C3%A3-rot-sensor
#4
Eleanor Martin, Edward Z Zhang, James A Guggenheim, Paul C Beard, Bradley E Treeby
Measurement of high acoustic pressures is necessary in order to fully characterise clinical high-intensity focused ultrasound (HIFU) fields, and for accurate validation of computational models of ultrasound propagation. However, many existing measurement devices are unable to withstand the extreme pressures generated in these fields, and those that can often exhibit low sensitivity. Here, a planar Fabry-Pérot interferometer with hard dielectric mirrors and spacer was designed, fabricated, and characterised and its suitability for measurement of nonlinear focused ultrasound fields was investigated...
September 4, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28866490/hadamard-encoded-multi-pulses-for-contrast-enhanced-ultrasound-imaging
#5
Ping Gong, Pengfei Song, Shigao Chen
The development of contrast-enhanced ultrasound (CEUS) imaging offers great opportunities for new ultrasound clinical applications such as myocardial perfusion imaging and abdominal lesion characterization. In CEUS imaging, the contrast agents (i.e., microbubbles) are utilized to improve the contrast between blood and tissue based on their high nonlinearity under low ultrasound pressure. In this paper, we propose a new CEUS pulse sequence by combining Hadamard-encoded multi-pulses (HEM) with fundamental frequency bandpass filter (i...
August 30, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28861704/multimodal-image-registration-based-on-binary-gradient-angle-descriptor
#6
Dongsheng Jiang, Yonghong Shi, Demin Yao, Yifeng Fan, Manning Wang, Zhijian Song
PURPOSE: Multimodal image registration plays an important role in image-guided interventions/therapy and atlas building, and it is still a challenging task due to the complex intensity variations in different modalities. METHODS: The paper addresses the problem and proposes a simple, compact, fast and generally applicable modality-independent binary gradient angle descriptor (BGA) based on the rationale of gradient orientation alignment. The BGA can be easily calculated at each voxel by coding the quadrant in which a local gradient vector falls, and it has an extremely low computational complexity, requiring only three convolutions, two multiplication operations and two comparison operations...
August 31, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28859466/prevalence-of-thyroid-nodules-and-their-associated-clinical-parameters-a-large-scale-multicenter-based-health-checkup-study
#7
Jae Hoon Moon, Min Kyung Hyun, Ja Youn Lee, Jung Im Shim, Tae Hyuk Kim, Hoon Sung Choi, Hwa Young Ahn, Kyung Won Kim, Do Joon Park, Young Joo Park, Ka Hee Yi
Background/Aims: We evaluated the prevalence and characteristics of thyroid nodules detected by thyroid ultrasound (US) at health checkups and the associated clinical parameters. Methods: A total of 72,319 subjects who underwent thyroid US at three health checkup centers in Korea from January 2004 to December 2010 were included in this study. The correlations between the presence of thyroid nodules and other clinical parameters were analyzed. Results: The prevalence of thyroid nodules and cysts was 34...
July 7, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28858247/probiotic-supplementation-in-preterm-feeding-intolerance-and-hospital-cost
#8
Flavia Indrio, Giuseppe Riezzo, Silvio Tafuri, Maria Ficarella, Barbara Carlucci, Massimo Bisceglia, Lorenzo Polimeno, Ruggiero Francavilla
We hypothesized that giving the probiotic strain Lactobacillus reuteri (L. reuteri) DSM 17938 to preterm, formula-fed infants would prevent an early traumatic intestinal inflammatory insult modulating intestinal cytokine profile and reducing the onset of feeding intolerance. Newborn were randomly allocated during the first 48 h of life to receive either daily probiotic (10⁸ colony forming units (CFUs) of L. reuteri DSM 17938) or placebo for one month. All the newborns underwent to gastric ultrasound for the measurement of gastric emptying time...
August 31, 2017: Nutrients
https://www.readbyqxmd.com/read/28854966/using-automated-texture-features-to-determine-the-probability-for-masking-of-a-tumor-on-mammography-but-not-ultrasound
#9
Lothar Häberle, Carolin C Hack, Katharina Heusinger, Florian Wagner, Sebastian M Jud, Michael Uder, Matthias W Beckmann, Rüdiger Schulz-Wendtland, Thomas Wittenberg, Peter A Fasching
BACKGROUND: Tumors in radiologically dense breast were overlooked on mammograms more often than tumors in low-density breasts. A fast reproducible and automated method of assessing percentage mammographic density (PMD) would be desirable to support decisions whether ultrasonography should be provided for women in addition to mammography in diagnostic mammography units. PMD assessment has still not been included in clinical routine work, as there are issues of interobserver variability and the procedure is quite time consuming...
August 30, 2017: European Journal of Medical Research
https://www.readbyqxmd.com/read/28854589/use-of-the-serum-anti-m%C3%A3-llerian-hormone-assay-as-a-surrogate-for-polycystic-ovarian-morphology-impact-on-diagnosis-and-phenotypic-classification-of-polycystic-ovary-syndrome
#10
Alice Fraissinet, Geoffroy Robin, Pascal Pigny, Tiphaine Lefebvre, Sophie Catteau-Jonard, Didier Dewailly
STUDY QUESTION: Does the use of the serum anti-Müllerian hormone (AMH) assay to replace or complement ultrasound (U/S) affect the diagnosis or phenotypic distribution of polycystic ovary syndrome (PCOS)? SUMMARY ANSWER: Combining U/S and the serum AMH assay to define polycystic ovarian morphology (PCOM) diagnoses PCOS (according to the Rotterdam classification) in more patients than definitions using one or the other of these indicators exclusively. WHAT IS KNOWN ALREADY: Since 2003, PCOM, as defined by U/S, is one of the three diagnostic criteria for PCOS...
August 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28854264/oral-glucose-tolerance-test-predicts-increased-carotid-plaque-burden-in-patients-with-acute-coronary-syndrome
#11
Thorarinn A Bjarnason, Steinar O Hafthorsson, Linda B Kristinsdottir, Erna S Oskarsdottir, Thor Aspelund, Sigurdur Sigurdsson, Vilmundur Gudnason, Karl Andersen
BACKGROUND: Type 2 diabetes and prediabetes are established risk factors for atherosclerosis. The aim of this study was to evaluate the atherosclerotic plaque burden in the carotid arteries of patients with acute coronary syndrome according to their glycemic status. METHODS: Patients with acute coronary syndrome and no previous history of type 2 diabetes were consecutively included in the study. Glucose metabolism was evaluated with fasting glucose in plasma, HbA1c and a standard two-hour oral glucose tolerance test...
2017: PloS One
https://www.readbyqxmd.com/read/28842641/non-equilibrium-plasma-jet-induced-thermo-acoustic-resistivity-imaging-for-higher-contrast-and-resolution
#12
Liang Guo, Linbo Li, Fanqing Dong, Wencong Jiang
A thermo-acoustic imaging modality induced by non-equilibrium atmospheric pressure plasma jet is reported. A tiny plasma jet is generated by a fast-rising pulsed dielectric barrier discharge and applied to the surface of the biological tissues. The pulsed conductive current induced by the conductive plasma jet is injected into the biological tissues. The Joule heating inside the tissue stimulates the ultrasound signals effectively. The amplitude of the ultrasound is related to the resistivity of the biological tissues near the contact point and takes the maximum at the certain conductivity of the certain frequency...
August 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28837595/novel-axolotl-cardiac-function-analysis-method-using-magnetic-resonance-imaging
#13
Pedro Gomes Sanches, Roel C Op 't Veld, Wolter de Graaf, Gustav J Strijkers, Holger Grüll
The salamander axolotl is capable of complete regeneration of amputated heart tissue. However, non-invasive imaging tools for assessing its cardiac function were so far not employed. In this study, cardiac magnetic resonance imaging is introduced as a non-invasive technique to image heart function of axolotls. Three axolotls were imaged with magnetic resonance imaging using a retrospectively gated Fast Low Angle Shot cine sequence. Within one scanning session the axolotl heart was imaged three times in all planes, consecutively...
2017: PloS One
https://www.readbyqxmd.com/read/28836045/extreme-learning-machine-framework-for-risk-stratification-of-fatty-liver-disease-using-ultrasound-tissue-characterization
#14
Venkatanareshbabu Kuppili, Mainak Biswas, Aswini Sreekumar, Harman S Suri, Luca Saba, Damodar Reddy Edla, Rui Tato Marinhoe, J Miguel Sanches, Jasjit S Suri
Fatty Liver Disease (FLD) is caused by the deposition of fat in liver cells and leads to deadly diseases such as liver cancer. Several FLD detection and characterization systems using machine learning (ML) based on Support Vector Machines (SVM) have been applied. These ML systems utilize large number of ultrasonic grayscale features, pooling strategy for selecting the best features and several combinations of training/testing. As result, they are computationally intensive, slow and do not guarantee high performance due to mismatch between grayscale features and classifier type...
August 23, 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28828174/a-simple-and-fast-ultrasonographic-method-of-detecting-enteral-feeding-tube-placement-in-mechanically-ventilated-critically-ill-patients
#15
Wagner Luis Nedel, Mariana Nunes Ferreira Jost, João Wilney Franco Filho
Abdominal X-rays, the diagnostic method for enteral feeding tube (EFT) positioning, are a source of irradiation for the patients and carry a potential risk of adverse effects. Data related to ultrasound (US)-guided EFT placement are scarce. We evaluated 41 patients with 41 EFT insertions with guidewire in place that was maintained until US examination. US detected 38 patients with proper positioning and 3 with inadequate positioning, with a sensitivity of 97% (95% CI 84.9-99.8%) and specificity of 100% (95% CI 19...
2017: Journal of Intensive Care
https://www.readbyqxmd.com/read/28815194/focusing-light-inside-dynamic-scattering-media-with-millisecond-digital-optical-phase-conjugation
#16
Yan Liu, Cheng Ma, Yuecheng Shen, Junhui Shi, Lihong V Wang
Wavefront shaping based on digital optical phase conjugation (DOPC) focuses light through or inside scattering media, but the low speed of DOPC prevents it from being applied to thick, living biological tissue. Although a fast DOPC approach was recently developed, the reported single-shot wavefront measurement method does not work when the goal is to focus light inside, instead of through, highly scattering media. Here, using a ferroelectric liquid crystal based spatial light modulator, we develop a simpler but faster DOPC system that focuses light not only through, but also inside scattering media...
February 2017: Optica
https://www.readbyqxmd.com/read/28812989/small-smart-fast-and-cheap-microchip-based-sensors-to-estimate-air-pollution-exposures-in-rural-households
#17
Ajay Pillarisetti, Tracy Allen, Ilse Ruiz-Mercado, Rufus Edwards, Zohir Chowdhury, Charity Garland, L Drew Hill, Michael Johnson, Charles D Litton, Nicholas L Lam, David Pennise, Kirk R Smith
Over the last 20 years, the Kirk R. Smith research group at the University of California Berkeley-in collaboration with Electronically Monitored Ecosystems, Berkeley Air Monitoring Group, and other academic institutions-has developed a suite of relatively inexpensive, rugged, battery-operated, microchip-based devices to quantify parameters related to household air pollution. These devices include two generations of particle monitors; data-logging temperature sensors to assess time of use of household energy devices; a time-activity monitoring system using ultrasound; and a CO₂-based tracer-decay system to assess ventilation rates...
August 16, 2017: Sensors
https://www.readbyqxmd.com/read/28812465/melanotic-neuroectodermal-tumor-of-infancy-presenting-with-fast-growing-scrotal-swelling-a-case-report-and-literature-review
#18
Corinthia Fabien-Dupuis, Benjamin Niver, Nick Shillingford, Larry Wang, Paul J Kokorowski, Shengmei Zhou
Testicular melanotic neuroectodermal tumor of infancy (MNTI) is extremely rare, with 2 cases reported in the literature. Its rarity and rapid and infiltrative growth pattern pose a diagnostic challenge. A previously healthy 3-month-old male, presented with a history of worsening left hemiscrotal swelling for 1 week. An outside ultrasound was suggestive of testicular torsion. Left orchiectomy demonstrated a mass occupying almost entire testicle with a variegated cut surface, with areas of pigmentation, necrosis, and hemorrhage...
September 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28799434/metabolic-biomarkers-and-gallstone-disease-a-population-based-study
#19
Daniel Mønsted Shabanzadeh, Tea Skaaby, Lars Tue Sørensen, Jesper Eugen-Olsen, Torben Jørgensen
OBJECTIVES: The objectives for this study were to examine the associations between metabolic biomarkers of obesity including insulin resistance, vascular dysfunction, systemic inflammation, genetic susceptibility and ultrasound proven gallstone disease or cholecystectomy in a population-based cross-sectional study. MATERIAL AND METHODS: A total of 2650 participants were included, of whom 422 had gallstone disease. Associations between selected metabolic biomarkers and gallstone disease were estimated by multivariable logistic regression models and expressed as odds ratio (OR) and 95% confidence interval (CI)...
August 11, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28795530/construction-of-silica-based-micro-nanoplatforms-for-ultrasound-theranostic-biomedicine
#20
REVIEW
Yang Zhou, Xiaoxia Han, Xiangxiang Jing, Yu Chen
Ultrasound (US)-based biomedicine has been extensively explored for its applications in both diagnostic imaging and disease therapy. The fast development of theranostic nanomedicine significantly promotes the development of US-based biomedicine. This progress report summarizes and discusses the recent developments of rational design and fabrication of silica-based micro/nanoparticles for versatile US-based biomedical applications. The synthetic strategies and surface-engineering approaches of silica-based micro/nanoparticles are initially discussed, followed by detailed introduction on their US-based theranostic applications...
August 10, 2017: Advanced Healthcare Materials
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