scholarly journals Possibilities of instrumental diagnostic methods for visualizing the pubic periosteum in the femoral canal

2021 ◽  
Author(s):  
V. I. Belokonev ◽  
S. Yu. Pushkin ◽  
Z. V. Kovaleva ◽  
N. S. Burnaeva ◽  
A. V. Zharov
Keyword(s):  
Research Methods ◽  
Femoral Hernia ◽  
Young Patients ◽  
Diagnostic Methods ◽  
Femoral Canal ◽  
Ray Method ◽  
X Ray ◽  
History Of

Performing classical methods of plasty in patients with femoral hernia is possible if Cooper's ligament – the pubic periosteum – is preserved. Patients with a long history of femoral hernia develop thinning and atrophy of the pubic periosteum. The aim of the study was to establish the possibilities of instrumental research methods to determine the preservation or atrophy of the pubic periosteum in patients with femoral hernia. It was found that using the X-ray method and CT before the operation, it was not possible to establish the preservation or atrophy of the pubic periosteum in the area of the femoral canal. With ultrasound, it is possible to visualize the pubic periosteum in young patients. 

The measurement of bond lengths in conjugated molecules of Carbon Centres

1951 ◽  
Vol 207 (1088) ◽  
pp. 101-110 ◽  
Keyword(s):  
Valence Bond ◽  
Theoretical Explanation ◽  
Ray Method ◽  
X Ray ◽  
Bond Lengths ◽  
Interesting Part ◽  
Unit Cells ◽  
History Of ◽  
Full Analysis ◽  
Short Time

I believe there are at least two good reasons for choosing this subject for my contribution. In the now fairly long history of the science of X -ray crystal analysis the aromatic hydrocarbon structures play quite an interesting part. Naphthalene and anthracene, for example, were among the very first organic crystals to be examined by the X -ray method, although they were certainly not the first organic structures to be fully determined. The first reasonably complete organic structure determination was probably that of hexamethylenetetramine, carried out by Dickinson & Raymond (1923). However, the measurement and comparison of the unit cells of naphthalene and anthracene by Bragg (1921) opened the chapter on the study of molecular crystals and foreshadowed much of what was to follow. Later, the full analysis of another aromatic structure, hexamethylbenzene, by Lonsdale (1929), revealed the beautiful simplicity of these structures, and established the planar arrangement of the atoms in the aromatic ring. More recent X -ray work has taken advantage of this simple two-dimensional arrangement of the atoms in most aromatic molecules, and because of this has been able to achieve an accuracy in bond length measurement which is probably much higher and more reliable than that attained for other complex molecules. My second reason for choosing this particular group of structures is that, again on account of the simple atomic arrangements, theoretical study of these molecules has reached a considerable degree of refinement. The peculiar and characteristic properties of aromatic compounds have long been know n to chemists. In a remarkably short time after the discovery of the wave equation by Schrödinger these aromatic properties received a theoretical explanation. This was first accomplished by the work of Slater, Hückel and Pauling, in the development of the conception of resonance of molecules among several valence bond structures. Besides other properties, it is now possible to calculate bond orders and bond lengths, either by the Slater-Pauling valence-bond or pairing method, or by the later molecular orbital treatments of Hund, Mulliken, Hückel and Lennard-Jones.

scholarly journals Pulmonary involvement in rheumatoid arthritis: evaluation by radiography and spirometry

2015 ◽  
Vol 41 (4) ◽  
pp. 331-342 ◽  
Author(s):  
Alexandre Melo Kawassaki ◽  
Daniel Antunes Silva Pereira ◽  
Fernando Uliana Kay ◽  
Ieda Maria Magalhães Laurindo ◽  
Carlos Roberto Ribeiro Carvalho ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Smoking Status ◽  
Pulmonary Involvement ◽  
Diagnostic Methods ◽  
Test Results ◽  
Cross Sectional ◽  
X Ray ◽  
Significant Difference ◽  
History Of ◽  
Chest X Ray

AbstractObjective: To determine whether simple diagnostic methods can yield relevant disease information in patients with rheumatoid arthritis (RA).Methods: Patients with RA were randomly selected for inclusion in a cross-sectional study involving clinical evaluation of pulmonary function, including pulse oximetry (determination of SpO2, at rest), chest X-ray, and spirometry.Results: A total of 246 RA patients underwent complete assessments. Half of the patients in our sample reported a history of smoking. Spirometry was abnormal in 30% of the patients; the chest X-ray was abnormal in 45%; and the SpO2 was abnormal in 13%. Normal chest X-ray, spirometry, and SpO2 were observed simultaneously in only 41% of the RA patients. A history of smoking was associated with abnormal spirometry findings, including evidence of obstructive or restrictive lung disease, and with abnormal chest X-ray findings, as well as with an interstitial pattern on the chest X-ray. Comparing the patients in whom all test results were normal (n = 101) with those in whom abnormal test results were obtained (n = 145), we found a statistically significant difference between the two groups, in terms of age and smoking status. Notably, there were signs of airway disease in nearly half of the patients with minimal or no history of tobacco smoke exposure.Conclusions: Pulmonary involvement in RA can be identified through the use of a combination of diagnostic methods that are simple, safe, and inexpensive. Our results lead us to suggest that RA patients with signs of lung involvement should be screened for lung abnormalities, even if presenting with no respiratory symptoms.

scholarly journals X-RAY-ENDOVASCULAR EMBOLIZATION OF PARAPANCREATIC VESSELS IN THE TREATMENT OF CHRONIC PANCREATITIS COMPLICATIONS

2021 ◽  
pp. 85-90
Author(s):  
K.S. Belyuk ◽  
E.V. Mogilevets ◽  
R.S. Shilo ◽  
L.F. Vasilchuk ◽  
S.P. Antonenko ◽  
...  
Keyword(s):  
Chronic Pancreatitis ◽  
Surgical Treatment ◽  
Minimally Invasive ◽  
Research Methods ◽  
Endovascular Embolization ◽  
Vascular Pathology ◽  
Laboratory Research ◽  
Surgical Interventions ◽  
X Ray ◽  
History Of

Goal. To improve the results of surgical treatment of chronic pancreatitis complicated by vascular pathology of the parapancreatic zone. Materials and methods. On the basis of the "Grodno University Clinic" in the department of X-ray Endovascular Surgery of the period 2010 to April 2020, were performed 16 embolizations of the arteries of the parapancreatic zone due to complications of chronic pancreatitis. Among the patients there were 13 (81.25%) men and 3 (18.75%) women. They had a history of chronic pancreatitis, which was confirmed using instrumental and laboratory research methods. One of the patients (6.25%) had a stationary aneurysm.15 (93.75%) patients had a bleeding clinic, which required urgent surgical interventions. Results. Angioembolization of the parapancreatic arteries was effective in 15 (93.75%) patients, which was confirmed by the results of control angiograms. Conclusions. The use of intraluminal embolization for vascular pathology of the parapancreatic zone in treatment of chronic pancreatitis complications is a minimally invasive and effective method.

scholarly journals A mesenteric cyst presenting as a femoral hernia: a case report

2015 ◽  
Vol 5 (3) ◽  
pp. 107-109
Author(s):  
Sezgin Mutlu ◽  
Süleyman Kargın ◽  
Barış Sevinç ◽  
Ersin Turan ◽  
Osman Doğru
Keyword(s):  
Case Report ◽  
Female Patient ◽  
Femoral Hernia ◽  
Clinical Suspicion ◽  
Mesenteric Cyst ◽  
Femoral Canal ◽  
Mesenteric Cysts ◽  
History Of ◽  
History Of Pain ◽  
Left Inguinal Region

Mesenteric cysts are a rare phenomenon and can be encountered in different regions of the mesentery or in the retroperitoneal region. They are usually asymptomatic but may lead to a variety of symptoms depending on their site. We report a case of a mesenteric cyst presenting as a femoral hernia, which is, to our knowledge, the second case found in the literature. Forty-eight years old female patient presented with a history of pain and swelling in her left inguinal region for six months. Although femoral hernias are rare conditions, mesenteric cysts can protrude inside the femoral canal. In a case of clinical suspicion of such a condition, appropriate imaging should be performed.

Study of substructural heterogeneity of textured materials by the X-ray method of generalized direct pole figures

2020 ◽  
Vol 86 (5) ◽  
pp. 22-30
Author(s):  
Yu. A. Perlovich ◽  
M. G. Isaenkova ◽  
O. A. Krymskaya ◽  
Ya. A. Babich ◽  
V. A. Fesenko
Keyword(s):  
Thermomechanical Processing ◽  
Peak Position ◽  
Half Width ◽  
Ray Method ◽  
Mutual Correlation ◽  
X Ray ◽  
Pole Figures ◽  
History Of ◽  
Textured Materials ◽  
Ray Methods

Any material can be considered a composite consisting of grains of different orientations which possess different properties depending on the history of their reorientation upon thermomechanical processing. A well-known selective character of X-ray methods is attributed to the fact that only grains of certain orientations participate in the formation of reflected radiation. A comprehensive description of the material including information about the substructure of grains of all orientations necessitates developing of the method providing description of the substructural state of grains located in the volume under study by analyzing the profile of x-ray lines. The proposed x-ray diffractometric method of Generalized Direct Pole Figures (GPF) which suggests combination of texture imaging and recording the profile of x-ray lines appeared to be rather efficient in a systematic x-ray study of the substructural heterogeneity of textured metallic materials. The measured parameters of the X-ray line profile — the true angular half-width β and angular peak position 2θ — are determined by the distortion (fragmentation) of the reflecting grains and interplanar spacings in their crystal lattice, respectively. The method provides a possibility to compare the substructure features of grains with different crystallographic orientations. An algorithm for calculation of the true physical half-width of the x-ray line using the necessary computer programs is presented. GPF β and GPF 2θ are presented for metal materials with hcp, fcc, and bcc crystalline lattices, as well as characteristic diagrams of their mutual correlation with texture PF. The use of the developed GPF method makes it possible to identify patterns of the formation of substructural heterogeneity during plastic deformation of metals.

scholarly journals The role of computed tomography in the diagnosis of lung cancer - a case report

2022 ◽  
Vol 12 (1) ◽  
pp. 138-146
Author(s):  
Justyna Cabaj ◽  
Julia Bargieł ◽  
Izabela Chmielewska ◽  
Janusz Milanowski
Keyword(s):  
Computed Tomography ◽  
Lung Cancer ◽  
Diagnostic Procedures ◽  
Diagnostic Methods ◽  
Neoplastic Disease ◽  
Significant Deterioration ◽  
X Ray ◽  
Entire Lung ◽  
History Of ◽  
Diagnosis Of Lung Cancer

Introduction Lung cancer has been the main oncological problem in the world for years. It is extremely important to use appropriate diagnostic methods that enable its detection and implementation of appropriate treatment. Aim The presented case shows the advantage of computed tomography over chest X-ray (X-ray) in visualizing neoplastic changes in the lungs. Case Study The paper presents a description of a patient diagnosed with centrally located advanced lung adenocarcinoma with a strong expression of PD-L1 qualified for treatment with pembrolizumab. Results and Discussion Presented case confirms that X-ray is less sensitive, especially in the case of centrally located tumors. Therefore, the emergence of a new cough in a smoker or ex-smoker should raise concerns related to lung cancer despite a normal X-ray image. The central location of the tumor may cause dramatic course of the symptoms. In the presented case, a sudden significant deterioration of the condition was observed due to atelectasis of the entire lung. Haemoptysis observed during hospitalization was another symptom of centraly located tumor mass. Conclusions In conclusion, the history of cigarette smoking, presence of typical symptoms should provide an in-depth diagnosis of lung cancer, despite normal X-ray. Diagnostic procedures include computed tomography in the first place. The course of centrally localized disease may change rapidly during on first cycle of treatment. Due to the possibility of serious complications of the ongoing neoplastic disease, the patient should be under constant medical supervision.

scholarly journals CONDUCTING DIAGNOSTIC STUDIES OF INDUSTRIAL AMMUNITION AND INDUSTRIAL EXPLOSIVE DEVICES USING NON-DESTRUCTIVE RESEARCH METHODS

2021 ◽  
pp. 919-932
Author(s):  
S. Lutsenko ◽  
O. Vysikan ◽  
H. Kapustiuk ◽  
V. Draliuk
Keyword(s):  
Research Methods ◽  
Digital Radiography ◽  
Gamma Ray ◽  
Improvised Explosive Devices ◽  
Ray Method ◽  
X Ray ◽  
Diagnostic Studies ◽  
Improvised Explosive ◽  
Explosive Devices ◽  
Non Destructive

The article deals with the possibilities of digital radiography when conducting diagnostic studies of industrial ammunition and improvised explosive devices during forensic explosive examinations. It is indicated that when conducting diagnostic studies of industrial-made ammunition and improvised explosive devices, there is a possibility of an abnormal operation (explosion) of the ammunition (a high level of danger to the life and health of experts). Therefore, in order to solve diagnostic problems in forensic explosive technical examinations, modern research methods are used, one of which is the non-destructive method. It is indicated that of the available non-destructive methods, the methods of X-ray and gamma-ray transmission have the greatest clarity and objectivity. It can be concluded that the most widespread method for diagnostic studies of industrial ammunition and improvised explosive devices is the method of X-ray transmission from the listed capabilities and characteristics of these methods. The X-ray examination is a non-destructive method of diagnosing research objects using digital radiography. There are listed main tasks of X-ray studies of explosive devices. Further, in the article are presented the possibilities and results of X-ray studies of industrial-made ammunition carried out by experts from the Kyiv Scientific Research Institute of Forensic Expertise of the Ministry of Justice of Ukraine using an X-ray television introscope Go-Scan, manufactured by Teledyne ICM (Belgium). From the results of the analysis of the capabilities of digital radiography during diagnostic studies of industrial-made ammunition and improvised explosive devices, it is concluded that digital radiography makes it possible to determine the internal design of explosive devices without dismantling its, its condition, a possible principle of activation, obtain objective quantitative data, document the obtained in the course of research data, and the addition of additional channels of information makes it possible to significantly expand the amount of information received, to make it more visual, accessible for comparative research, to obtain parametric indicators, which, in turn, improves the quality of diagnostic studies of explosive devices. In addition, a serious advantage of the X-ray method is the ability to conduct research at the location of ammunition and improvised explosive devices or in laboratory conditions without dismantling its, which allows to preserve the research object for its further or re-examination, as well as providing it in the future in the courtroom as physical evidence.

Phase Transformations in Ti-7w/oMo-3w/oMe Alloy

1974 ◽  
Vol 32 ◽  
pp. 514-515
Author(s):  
S. Fujishiro
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Transmission Electron Microscopy ◽  
Tensile Strength ◽  
Mechanical Processing ◽  
Ray Method ◽  
X Ray ◽  
Transmission Electron ◽  
Water Quench ◽  
Alpha Beta

The mechanical properties of three titanium alloys (Ti-7Mo-3Al, Ti-7Mo- 3Cu and Ti-7Mo-3Ta) were evaluated as function of: 1) Solutionizing in the beta field and aging, 2) Thermal Mechanical Processing in the beta field and aging, 3) Solutionizing in the alpha + beta field and aging. The samples were isothermally aged in the temperature range 300° to 700*C for 4 to 24 hours, followed by a water quench. Transmission electron microscopy and X-ray method were used to identify the phase formed. All three alloys solutionized at 1050°C (beta field) transformed to martensitic alpha (alpha prime) upon being water quenched. Despite this heavily strained alpha prime, which is characterized by microtwins the tensile strength of the as-quenched alloys is relatively low and the elongation is as high as 30%.

Lingual Dystonia Treated with Botulinum Toxin - A Case Report

1970 ◽  
Vol 24 (2) ◽  
pp. 75-78
Author(s):  
MA Hayee ◽  
QD Mohammad ◽  
H Rahman ◽  
M Hakim ◽  
SM Kibria
Keyword(s):  
Botulinum Toxin ◽  
Botulinum Toxin A ◽  
Botulinum Toxin Type A ◽  
Botulinum Toxin Type ◽  
X Ray ◽  
Medical College ◽  
Lingual Dystonia ◽  
History Of ◽  
Chest X Ray

A 42-year-old female presented in Neurology Department of Sir Salimullah Medical College with gradually worsening difficulty in talking and eating for the last four months. Examination revealed dystonic tongue, macerated lips due to continuous drooling of saliva and aspirated lungs. She had no history of taking antiparkinsonian, neuroleptics or any other drugs causing dystonia. Chest X-ray revealed aspiration pneumonia corrected later by antibiotics. She was treated with botulinum toxin type-A. Twenty units of toxin was injected in six sites of the tongue. The dystonic tongue became normal by 24 hours. Subsequent 16 weeks follow up showed very good result and the patient now can talk and eat normally. (J Bangladesh Coll Phys Surg 2006; 24: 75-78)

Highlights in the history of X-ray topography1

1995 ◽  
Vol 210 (6) ◽  
Author(s):  
A. R. Lang
Keyword(s):  
Magnetic Domain ◽  
Diffraction Theory ◽  
Dislocation Loops ◽  
X Ray Diffraction ◽  
X Ray ◽  
Domain Structures ◽  
Structure Factors ◽  
History Of ◽  
Dislocation Sources ◽  
Non Destructive

AbstractX-ray topography provides a non-destructive method of mapping point-by-point variations in orientation and reflecting power within crystals. The discovery, made by several workers independently, that in nearly perfect crystals it was possible to detect individual dislocations by X-ray diffraction contrast started an epoch of rapid exploitation of X-ray topography as a new, general method for assessing crystal perfection. Another discovery, that of X-ray Pendellösung, led to important theoretical developments in X-ray diffraction theory and to a new and precise method for measuring structure factors on an absolute scale. Other highlights picked out for mention are studies of Frank-Read dislocation sources, the discovery of long dislocation helices and lines of coaxial dislocation loops in aluminium, of internal magnetic domain structures in Fe-3 wt.% Si, and of stacking faults in silicon and natural diamonds.

Sign in / Sign up

Export Citation Format

Share Document