Radiation dose reduction using two orthogonal topograms associated with automatic tube voltage selection for lung CT scanning as compared with a single anteroposterior topogram

AbstractObjectiveTo evaluate the effectiveness of two orthogonal topograms on radiation dose and image quality (IQ) associated with topogram-based automatic tube voltage selection (ATVS) for lung CT scanning.MethodsThirty-seven patients were enrolled in this study. At baseline, only an anteroposterior topogram was obtained and at follow-up, both anteroposterior and lateral topograms were performed. ATVS was turned on during all scans. Objective and subjective IQ evaluations were performed and compared; tube voltage and radiation dose of each scan were noted and analyzed.ResultsA significant difference was observed regarding the objective parameters between baseline and follow-up only in image noise and signal –noise ratio (SNR) in the upper one-third of the image (image noise: 7.49 ± 1.08 vs. 9.10 ± 1.13,p 
Source: Japanese Journal of Radiology - Category: Radiology Source Type: research

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Publication date: September 2019Source: Food Research International, Volume 123Author(s): Florian Bahut, Youzhong Liu, Rémy Romanet, Christian Coelho, Nathalie Sieczkowski, Hervé Alexandre, Philippe Schmitt-Kopplin, Maria Nikolantonaki, Régis D. GougeonAbstractGlutathione-rich inactivated dry yeasts (GSH-IDY) are purported to accumulate glutathione intracellularly and then released into the must. Glutathione is beneficial for wine quality, but research has highlighted that GSH-IDYs have a synergic antioxidant effect similar to that of molecular GSH. Combination of negative mode ultra-high-resolution Fo...
Source: Food Research International - Category: Food Science Source Type: research
Conclusions: FMT restores alterations of the gut microenvironment in IBS-D patients during the first 3 weeks and improves their symptoms for up to 28 weeks. ClinicalTrials.gov ID: NCT03333291. PMID: 31190584 [PubMed - as supplied by publisher]
Source: Scandinavian Journal of Gastroenterology - Category: Gastroenterology Tags: Scand J Gastroenterol Source Type: research
Conclusions: H. pylori screening for the adults 50 years of age and older could be cost-effective compared to UGI and endoscopy in high prevalence countries. The main reasons for the superiority of H. pylori screening are that an H. pylori antibody test has a higher sensitivity and specificity than UGI and endoscopy and the benefits to reduce gastric cancer incidence and mortality. PMID: 31190581 [PubMed - as supplied by publisher]
Source: Scandinavian Journal of Gastroenterology - Category: Gastroenterology Tags: Scand J Gastroenterol Source Type: research
Conclusions: Immigration increased the incidence of HCC and the need for active treatment such as LT. This fact raises the question of whether immigrants from regions with a high incidence of HCC ought to be subjected to mandatory hepatitis B and C virus (HBV and HCV) diagnosis and consequent liver ultrasounds for diagnosis of occult HCC. With such strategies, the morbidity and mortality of HCC could be reduced. PMID: 31190577 [PubMed - as supplied by publisher]
Source: Scandinavian Journal of Gastroenterology - Category: Gastroenterology Tags: Scand J Gastroenterol Source Type: research
We developed a high-speed two-photon optical ribbon imaging system, which combines galvo-mirrors for an arbitrary curve scan on a lateral plane and a tunable acoustic gradient-index lens for a 100   kHz – 1   MHz axial scan. The system provides micrometer/millisecond spatiotemporal ...
Source: Optics Letters - Category: Physics Authors: Source Type: research
In this work, we experimentally study the nonlinear absorption enhancement of saturable absorption and two-photon absorption on a hybrid structure comprising a monolayer MoS_2 and Au nanoantennas via femtosecond I-scan measurement. Specifically, a 13-fold increment in the linear absorption ...
Source: Optics Letters - Category: Physics Authors: Source Type: research
Publication date: Available online 14 June 2019Source: PolymerAuthor(s): Masaru Mukai, Wei Ma, Keiko Ideta, Atsushi TakaharaAbstractOrganic-inorganic nanocomposite films consisting of surface functionalized halloysite nanotube (HNT) and poly (vinyl alcohol) (PVA) with improved mechanical and thermal properties were prepared. The surface of HNT was modified with boronic acid by two different methods. In the first method, a boronic acid group bearing a triethoxysilane was synthesized and used to modify HNT directly. In the second method, HNT was modified by 3-aminopropyltriethoxysilane (APTES) and 4-formylphenylboronic acid ...
Source: Polymer - Category: Chemistry Source Type: research
We report an experimental procedure leading to defect-free mixed-matrix membranes with a homogeneous spatial distribution of filler particles, volume fractions of which are within the interval [0.10, 0.35]. A polyimide matrix was synthetized from 4,4´-(hexafluoroisopropylidene) diphtalic anhydride and 4,4′-oxydianiline in the solution with N,N-dimethylformamide. (3-aminopropyl) triethoxysilane was used as a linker to improve the phase contact between silicalite-1 particles and the polyimide matrix. We found that a homogeneous spatial distribution of particles in the resulting membrane was achieved if kinematic ...
Source: Polymer - Category: Chemistry Source Type: research
Publication date: Available online 13 June 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Imandi Manga Raju, Siva Rao T., DivyaLakshmi K., RaviChandra M., Swathi Padmaja J., Divya G.AbstractA series of heterogeneous poly 3-Thenoic acid (P3TA) sensitized, Copper (Cu) doped anatase/brookite TiO2 (Cu-TiO2) nanohybrid photocatalysts (P3TA/Cu-TiO2) were facilely synthesized using modified sol-gel method by taking different weight percentages (wt%) of P3TA to TiO2 at 20 °C temperature. X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, Thermogravimetric analysis (TGA), X-ray...
Source: Journal of Environmental Chemical Engineering - Category: Chemistry Source Type: research
Publication date: 15 August 2019Source: Journal of Electroanalytical Chemistry, Volume 847Author(s): Vahdat Hassanzadeh, Mohammad Ali Sheikh-Mohseni, Biuck HabibiAbstractElectrocatalysis of ethanol was performed by a nanocomposite which was fabricated by carbon paste electrode modified with reduced graphene oxide supported bimetallic NiCo nanoparticles (Ni-Co/RGO/CPE). It was characterized by scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction spectroscopy and cyclic voltammetry. The cyclic voltammetric studies in different conditions showed redox activity of the Ni nanoparticles in the form of ...
Source: Journal of Electroanalytical Chemistry - Category: Chemistry Source Type: research
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