scholarly journals Рентґенологічна характеристика ефективності лікування котів, хворих на гнійний остеомієліт

2013 ◽  
pp. 169-172
Author(s):  
Т. М. Собчишина
Keyword(s):  
Effective Treatment ◽  
Bone Structure ◽  
Early Stage ◽  
X Ray ◽  
Reparative Osteogenesis

Наведено дані рентґенологічних досліджень післязастосування ґранульованих імплантантів Біомін-гТлС для пластики кісткових дефектів. Встанов-лено, що застосування цих імплантантів призво-дить до активізації процесів репаративного ос-теогенезу та відтворення анатомічної форми йструктури кістки. Рентґенологічно виявлені таописані основні зміни тканин, характерні для ос-теомієліту. Доведено, що рентґенологічне дослі-дження дає можливість діагностувати остеоміє-літ на ранній стадії та призначити ефективнелікування. The data of X-ray after the application of granular implants Biomin-hTlS of bone defects.Found that the use of these implants leads to activation of reparative osteogenesis and playanatomic shape and bone structure. Radiologically detected and describes the main tissue changescharacteristic of osteomyelitis. It is shown that the X-ray study allows to diagnose osteomyelitis atan early stage and be an effective treatment.

Retinol, α-Tocopherol and Vitamin D3 in White MuscleDisease

2018 ◽  
Vol 74 (1) ◽  
pp. 6029-2018
Author(s):  
HANDAN MERT ◽  
SERKAN YİLDİRİM ◽  
IBRAHİM HAKKİ YORUK ◽  
KİVANC IRAK ◽  
BAHAT COMBA ◽  
...  
Keyword(s):  
Vitamin A ◽  
Vitamin D3 ◽  
White Muscle ◽  
Bone Structure ◽  
Early Stage ◽  
Vitamin A Deficiency ◽  
Muscle Disease ◽  
Control Group ◽  
White Muscle Disease ◽  
Fat Soluble Vitamins

Vitamins are essential for the health of all living organisms. Vitamins E, A, D and K are known as fat-soluble vitamins, and deprivation of vitamin E causes various disorders, especially in the reproduction and cardiovascular systems and in muscle functions. Vitamin A, on the other hand, has roles in various biological functions – like eyesight – and the growth, reproduction and differentiation of epithelial cells. Vitamin A deficiency leads to the keratinization of the epithelium, and disorders related to the metaplasies of the genital and genitourinary systems. Conversely, vitamin D is defined as a pro-hormone and is responsible for Cahomeostasis, and thus indirectly affects the bone metabolism, bone structure, and cellular and neural functions of Ca. White muscle disease (WMD) can occur in newborn lambs, but is more commonly seen in lambs of up to 3 months of age. In this study, 30 lambs of 3 to 50-days-old from different flocks diagnosed with White Muscle Disease (WMD) were selected as research material, while the control group consisted of 8 healthy lambs. With the aim of clarifying the cause of WMD, serum fat-soluble vitamins, retinol, α-tocopherol and vitamin D3 levels were determined in 16 lambs. Gluteal and heart musclet issue samples also were taken from 30 lambs with WMD. The vitamin levels of the samples were analysed by HPLC. The levels of serum α-tocopherol, retinols, and vitamin D3 were foundto be low in the diseased animals, but only retinol (p<0.001) and α-tocopherol (p<0.0011) level differences were statistically relevant. Macroscopically, Zenker’s necrosis was determined in the heart muscles of 17 lambs, and in the gluteal and chest muscles of 6 lambs. 7 lambs displayed necrosis in both their heart and in gluteal muscles. The samples were analyzed microscopically to reach similar findings: swollen homogeneous pink muscles, pycnotic nuclei, and hyperaemic and haemorrhagic blood vessels in gluteal, chest and heart muscles. Hyaline degeneration and Zenker's necrosis, dystrophic regions in necrotic areas, cc was detected as a severe disease in lambs at an early stage of life with advanced degeneration in different muscle tissues. Deficiency of fat-soluble vitamins was also detected in the sick animals. Control group lambs had higher levels of α tocopherol and retinol (p<0.001) compared to the sick lambs. .

Structural characterization of laser ablated epitaxial (Ba0.5Sr0.5)TiO3 thin films on MgO(001) by synchrotron x-ray scattering

1999 ◽  
Vol 14 (7) ◽  
pp. 2905-2911 ◽  
Author(s):  
Sangsub Kim ◽  
Tae Soo Kang ◽  
Jung Ho Je
Keyword(s):  
Thin Films ◽  
Early Stage ◽  
Lattice Parameter ◽  
Normal Direction ◽  
X Ray ◽  
X Ray Scattering ◽  
Surface Normal ◽  
Out Of Plane ◽  
Axis Parallel ◽  
Ray Scattering

Epitaxial (Ba0.5Sr0.5) TiO3 thin films of two different thickness (∼25 and ∼134 nm) on MgO(001) prepared by a pulsed laser deposition method were studied by synchrotron x-ray scattering measurements. The film grew initially with a cube-on-cube relationship, maintaining it during further growth. As the film grew, the surface of the film became significantly rougher, but the interface between the film and the substrate did not. In the early stage of growth, the film was highly strained in a tetragonal structure (c/a = 1.04) with the longer axis parallel to the surface normal direction. As the growth proceeded further, it relaxed to a cubic structure with the lattice parameter near the bulk value, and the mosaic distribution improved significantly in both in- and out-of-plane directions. The thinner film (∼25 nm) showed only one domain limited mainly by the film thickness, but the thicker film (∼134 nm) exhibited three domains along the surface normal direction.

scholarly journals In Situ Investigation of the Early-Stage Growth of Nanoporous Alumina

2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Thérèse Gorisse ◽  
Ludovic Dupré ◽  
Marc Zelsmann ◽  
Alina Vlad ◽  
Alessandro Coati ◽  
...  
Keyword(s):  
Early Stage ◽  
Grazing Incidence ◽  
Alumina Layer ◽  
Nanoporous Alumina ◽  
X Ray ◽  
X Ray Scattering ◽  
In Situ Investigation ◽  
Low X ◽  
X Ray Absorption

We report the successful use of in situ grazing incidence small-angle X-ray scattering to follow the anodization of aluminum. A dedicated electrochemical cell was designed and developed for this purpose with low X-ray absorption, with the possibility to access all azimuthal angles (360°) and to remotely control the temperature of the electrolyte. Three well-known fabrication techniques of nanoporous alumina, i.e., single, double, and pretextured, were investigated. The differences in the evolution of the scattering images are described and explained. From these measurements, we could determine at which moment the pores start growing even for very short anodization times. Furthermore, we could follow the thickness of the alumina layer as a function of the anodization time by monitoring the period of the Kiessig fringes. This work is aimed at helping to understand the different steps taking place during the anodization of aluminum at the very early stages of nanoporous alumina formation.

scholarly journals Analysis of Separability of COVID-19 and Pneumonia in Chest X-ray Images by Means of Convolutional Neural Networks

Proceedings ◽  
2020 ◽  
Vol 54 (1) ◽  
pp. 31
Author(s):  
Joaquim de Moura ◽  
Lucía Ramos ◽  
Plácido L. Vidal ◽  
Jorge Novo ◽  
Marcos Ortega
Keyword(s):  
Neural Networks ◽  
Convolutional Neural Networks ◽  
Clinical Symptoms ◽  
Early Stage ◽  
World Health ◽  
Complete Analysis ◽  
Screening Process ◽  
X Ray ◽  
Chest X Ray ◽  
Health Organization

The new coronavirus (COVID-19) is a disease that is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). On 11 March 2020, the coronavirus outbreak has been labelled a global pandemic by the World Health Organization. In this context, chest X-ray imaging has become a remarkably powerful tool for the identification of patients with COVID-19 infections at an early stage when clinical symptoms may be unspecific or sparse. In this work, we propose a complete analysis of separability of COVID-19 and pneumonia in chest X-ray images by means of Convolutional Neural Networks. Satisfactory results were obtained that demonstrated the suitability of the proposed system, improving the efficiency of the medical screening process in the healthcare systems.

GROWTH OF OXIDE LAYER ON GERMANIUM (011) SUBSTRATE UNDER DRY AND WET ATMOSPHERES

1999 ◽  
Vol 06 (06) ◽  
pp. 1053-1060 ◽  
Author(s):  
N. TABET ◽  
J. AL-SADAH ◽  
M. SALIM
Keyword(s):  
Simple Model ◽  
Oxide Film ◽  
Growth Kinetics ◽  
Photoelectron Spectroscopy ◽  
Early Stage ◽  
X Ray ◽  
Apparent Thickness ◽  
Different Temperatures ◽  
Kinetics Of

X-ray Photoelectron Spectroscopy (XPS) has been used to investigate the oxidation of (011) Ge substrates. The sample surfaces were CP4-etched, then annealed in situ, at different temperatures, for various durations. Dry and wet atmospheres were used. The oxidation rate during the early stage was increased by the presence of moisture in the atmosphere. A simple model was used to define and determine an apparent thickness of the oxide film from XPS measurements. The time dependence of the apparent thickness is consistent with a partial coverage of the surface by oxide islands. The growth kinetics of the oxide islands obeys a nearly cubic law.

scholarly journals Reducing radiation exposure in newborns with birth head trauma

2017 ◽  
Vol 5 (4) ◽  
pp. 24-30
Author(s):  
Irina A. Kriukova ◽  
Evgeniy Y. Kriukov ◽  
Danil A. Kozyrev ◽  
Semen A. Sotniкov ◽  
Dmitriy A. Iova ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Radiation Exposure ◽  
Head Trauma ◽  
Bone Structure ◽  
Bone Fractures ◽  
Diagnostic Methods ◽  
Cranial Bone ◽  
X Ray ◽  
Reduce Radiation Exposure ◽  
Risk Of Cancer

Background. Birth head trauma causing intracranial injury is one of the most common causes of neonatal mortality and morbidity. In case of suspected cranial fractures and intracranial hematomas, diagnostic methods involving radiation, such as x-ray radiography and computed tomography, are recommended. Recently, an increasing number of studies have highlighted the risk of cancer complications associated with computed tomography in infants. Therefore, diagnostic methods that reduce radiation exposure in neonates are important. One such method is ultrasonography (US). Aim. We evaluated US as a non-ionizing radiation method for diagnosis of cranial bone fractures and epidural hematomas in newborns with cephalohematomas or other birth head traumas. Material and methods. The study group included 449 newborns with the most common variant of birth head trauma: cephalohematomas. All newborns underwent transcranial-transfontanelle US for detection of intracranial changes and cranial US for visualization of bone structure in the cephalohematoma region. Children with ultrasonic signs of cranial fractures and epidural hematomas were further examined at a children’s hospital by x-ray radiography and/or computed tomography. Results and discussion. We found that cranial US for diagnosis of cranial fractures and transcranial-transfontanelle US for diagnosis of epidural hematomas in newborns were highly effective. In newborns with parietal cephalohematomas (444 children), 17 (3.8%) had US signs of linear fracture of the parietal bone, and 5 (1.1%) had signs of ipsilateral epidural hematoma. Epidural hematomas were visualized only when US was performed through the temporal bone and not by using the transfontanelle approach. Sixteen cases of linear fractures and all epidural hematomas were confirmed by computed tomography. Conclusion. The use of US diagnostic methods reduced radiation exposure in newborns with birth head trauma. US methods (transcranial-transfontanelle and cranial) can be used in screening for diagnosis and personalized monitoring of changes in birth head trauma as well as to reduce radiation exposure.

scholarly journals Image Segmentation Techniques in Bone Structure Psychiatry

2020 ◽  
Vol 9 (07) ◽  
pp. 25102-25112
Author(s):  
Ajayi Olayinka Adedoyin ◽  
Olamide Timothy Tawose ◽  
Olu Sunday Adetolaju
Keyword(s):  
Image Segmentation ◽  
Bone Structure ◽  
Performance Comparison ◽  
Imaging Systems ◽  
Intrinsic Properties ◽  
X Ray ◽  
Practical Applications ◽  
X Ray Imaging ◽  
Segmentation Algorithms ◽  
Bone Structures

Today, a large number of x-ray images are interpreted in hospitals and computer-aided system that can perform some intelligent task and analysis is needed in order to raise the accuracy and bring down the miss rate in hospitals, particularly when it comes to diagnosis of hairline fractures and fissures in bone joints. This research considered some segmentation techniques that have been used in the processing and analysis of medical images and a system design was proposed to efficiently compare these techniques. The designed system was tested successfully on a hand X-ray image which led to the proposal of simple techniques to eliminate intrinsic properties of x-ray imaging systems such as noise. The performance and accuracy of image segmentation techniques in bone structures were compared and these eliminated time wasting on the choice of image segmentation algorithms. Although there are several practical applications of image segmentation such as content-based image retrieval, machine vision, medical imaging, object detection, recognition tasks, etc., this study focuses on the performance comparison of several image segmentation techniques for medical X-ray images.

scholarly journals Dynamics of the mandible bone tissue condition after the dental implantation and shockwave therapy

Morphologia ◽  
2021 ◽  
Vol 15 (3) ◽  
pp. 175-179
Author(s):  
I.V. Chelpanova ◽  
O.Z. Masna-Chala ◽  
A.M. Yashchenko ◽  
Z.Z. Masna ◽  
Kh.I. Rudnytska
Keyword(s):  
Shock Wave ◽  
Bone Density ◽  
Bone Tissue ◽  
Bone Structure ◽  
Traumatic Injury ◽  
The Body ◽  
Maximum Pressure ◽  
Shock Wave Therapy ◽  
X Ray ◽  
Dental Implantation

Background. The problem of restoration the integrity of the dentition after tooth loss remains one of the most problematic dental issues. Мodern dental technologies open a promising direction in its solution, in particular - the method of dental implantation. Objective. The aim of our work was to study the changes that occur in the bone tissue of the mandible after implantation of titanium foam and to determine the effect of shock wave therapy (SWT) on its structure restoration. Methods. The study was performed on 15 adult rabbits aged 6-7 months, weighing 2.5-3 kg. The animals from the experimental groups were implanted with titanium pin, 3 mm long. The pin was implanted under combined anesthesia bilaterally into the body of the mandible. One day after the operation, the animals received SWT 500 pulses with a frequency of 5 Hz and a maximum pressure at the wavefront of 1.2 Bar per implantation site using the device Storz Medical Master Plus MP 100. The animals were removed from the experiment on 15-th day, after which the mandible was disarticulated and radiographically performed. The obtained results were statistically significant. The differences at p<0.05 were considered significant. Results. The results showed that the bone tissue of the jaws during implantation undergoes traumatic injury, the results of which, two weeks after surgery on radiographs we can clearly see a violation of the bone tissue structure and a significant increase in its density. Using the SWT method, we obtained a positive dynamics of bone density after titanium pin implantation and slight Rh-changes in bone structure compared with normal. Conclusion. Аfter implantation with titanium pin the bone density of the rabbit lower jaw body is significantly reduced, X-ray shows the heterogeneity of bone structure, areas of sclerosis are expressed. Shock wave therapy helps to restore the quality of bone tissue, this is confirmed by the fact that the density indicators are close to the norm and X-ray shows some separate small areas of restructuring of bone tissue heterogeneity, mainly due to merging the pattern of the bone trabeculae of the bone cancellous part.

In situ magnetic and electronic investigation of the early stage oxidation of Fe nanoparticles using X-ray photo-emission electron microscopy

2014 ◽  
Vol 16 (48) ◽  
pp. 26624-26630 ◽  
Author(s):  
C. A. F. Vaz ◽  
A. Balan ◽  
F. Nolting ◽  
A. Kleibert
Keyword(s):  
Electron Microscopy ◽  
Chemical Composition ◽  
Iron Nanoparticles ◽  
Early Stage ◽  
Photoemission Electron Microscopy ◽  
X Ray ◽  
Emission Electron ◽  
Fe Nanoparticles ◽  
Photoemission Electron

In situX-ray photoemission electron microscopy reveals the evolution of chemical composition and magnetism of individual iron nanoparticles during oxidation.

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