RADIATION DIAGNOSTICS OF STRESS BONE RESTRUCTURING

Vestnik ◽  
2021 ◽  
pp. 252-255
Author(s):  
К.Х. Мухамеджанов
Keyword(s):  
Computed Tomography ◽  
Bone Remodeling ◽  
Central City ◽  
Clinical Manifestations ◽  
Conventional Radiography ◽  
Diagnostic Problem ◽  
X Ray ◽  
Clinical Hospital ◽  
Bone Stress ◽  
Tomography Analysis

В данной статье представлены результаты клинических проявлений и рентгенологических исследований, перестройки костной ткани. Результаты наших исследований показали, что обычная рентгенография не решает всей проблемы диагностики стрессовых переломов напряжения. Мы в данной публикации выделяем те случаи, когда обычная рентгенография не в силах решить проблему диагностики и требует использования дополнительных методов лучевой диагностики. Исследование проведено на базе ЦГКБ г. Алматы. Под нашим наблюдением находились 11 (100%) больных, у которых заподозрено наличие перестройки костей. У 6 (54.5%) больных данные рентгенологического исследования указывали, на наличие стрессовой перестройки кости у 5 (45,5%) больных признаки были сомнительными. Применение компьютерной томографии (КТ) и динамическое рентгенологическое исследование позволило установить диагноз стрессовой перегрузки костей. This article presents the results of clinical manifestations and X-ray studies of the bone remodeling. The results of our research have shown that conventional radiography does not solve the entire problem of diagnosing stress fractures of tension. In this publication, we highlight those cases when conventional radiography is unable to solve the diagnostic problem and requires the use of additional methods of radiation diagnostics. The research was carried out on the basis of the Central City Clinical Hospital of Almaty. We observed 11 (100%) patients in whom the presence of bone remodeling was suspected. In 6 (54.5%) patients, X-ray examination data indicated that the presence of stress bone remodeling in 5 (45.5%) patients were dubious. The use of computed tomography analysis (CT) and dynamic X-ray examination made it possible to establish the diagnosis of bone stress overload.

Micro X-ray computed tomography analysis for the evaluation of asymmetrical condylar growth in the rat

2003 ◽  
Vol 6 ◽  
pp. 168-172 ◽  
Author(s):  
H Nakano ◽  
J Watahiki ◽  
M Kubota ◽  
K Maki ◽  
Y Shibasaki ◽  
...  
Keyword(s):  
Computed Tomography ◽  
X Ray ◽  
X Ray Computed ◽  
Tomography Analysis

scholarly journals Multi-scale x-ray computed tomography analysis of coal microstructure and permeability changes as a function of effective stress

2016 ◽  
Vol 165 ◽  
pp. 149-156 ◽  
Author(s):  
Yihuai Zhang ◽  
Xiaomeng Xu ◽  
Maxim Lebedev ◽  
Mohammad Sarmadivaleh ◽  
Ahmed Barifcani ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Effective Stress ◽  
X Ray ◽  
Multi Scale ◽  
Permeability Changes ◽  
X Ray Computed ◽  
Tomography Analysis

scholarly journals Peri-prosthetic Bone Remodeling of Hydroxyapatite-coated Compaction Short Stem was Not Affected by Stem Alignment

2021 ◽  
Author(s):  
Shinya Hayashi ◽  
Yuichi Kuroda ◽  
Naoki Nakano ◽  
Tomoyuki Matsumoto ◽  
Tomoyuki Kamenaga ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Bone Mineral Density ◽  
Bone Remodeling ◽  
Retrospective Cohort ◽  
Dual Energy ◽  
Short Stem ◽  
Mineral Density ◽  
X Ray ◽  
Ct Data ◽  
The Relationship

Abstract Background: We aimed to investigate the relationship between stem insertion alignment and postoperative bone mineral density (BMD) changes in patients with full hydroxyapatite-coated (HA) compaction short stem and short tapered-wedge stem. Methods: This retrospective cohort study enrolled 115 consecutive patients (115 joints) undergoing total hip arthroplasty (THA) using the full HA compaction short (n=59) and short tapered-wedge (n=56) stems. Stem alignment including anteversion, valgus, and anterior tilt were measured by 3D-template using computed tomography (CT) data. Post-operative peri-prosthetic BMD was measured by dual-energy X-ray absorptiometry (DEXA). The relationship between stem alignment and BMD changes in the stems were analyzed.Results: Both groups showed similar patterns of peri-prosthetic BMD changes. Stem insertion alignments of anteversion, valgus, and anterior tilt were different between the two types of stems. Stem alignment of valgus and anterior tilt did not affect peri-prosthetic BMD in either type of stem. An absolute anteversion difference between stem anteversion and original canal anteversion caused significant peri-prosthetic BMD loss in Gruen zones 1 and 7 in the tapered-wedge stem. However, stem alignment of absolute anteversion difference did not affect BMD changes in the HA compaction stem.Conclusion: Peri-prosthetic bone remodeling remained unaffected by stem alignment after THA with the new short full HA compaction stem.

High-Resolution Radiography for Detecting and Measuring Micron-Scale Features

2004 ◽  
Author(s):  
Daniel H. Morse ◽  
Arlyn J. Antolak ◽  
Bernice E. Mills
Keyword(s):  
Computed Tomography ◽  
Composite Materials ◽  
Phase Contrast ◽  
Three Dimensional ◽  
Conventional Radiography ◽  
Small Scale ◽  
Micro Computed Tomography ◽  
Contrast Imaging ◽  
X Ray ◽  
Projection Radiography

X-ray radiography has long been recognized as a valuable tool for detecting internal features and flaws. Recent developments in microfabrication and composite materials have extended inspection requirements to the resolution limits of conventional radiography. Our work has been directed toward pushing both detection and measurement capabilities to a smaller scale. Until recently, we have used conventional contact radiography, optimized to resolve small features. With the recent purchase of a nano-focus (sub-micron) x-ray source, we are now investigating projection radiography, phase contrast imaging and micro-computed tomography (μ-CT). Projection radiography produces a magnified image that is limited in spatial resolution mainly by the source size, not by film grain size or detector pixel size. Under certain conditions phase contrast can increase the ability to resolve small features such as cracks, especially in materials with low absorption contrast. Micro-computed tomography can provide three-dimensional measurements on a micron scale and has been shown to provide better sensitivity than simple radiographs. We have included applications of these techniques to small-scale measurements not easily made by mechanical or optical means. Examples include void detection in meso-scale nickel MEMS parts, measurement of edge profiles in thick gold lithography masks, and characterization of the distribution of phases in composite materials. Our work, so far, has been limited to film.

X-Ray Microfocus Radioscopy and Computed Tomography for Failure Analysis

1996 ◽  
Author(s):  
R.H. Bossi ◽  
D.A. Cross ◽  
R.A. Mickelsen
Keyword(s):  
Computed Tomography ◽  
Failure Analysis ◽  
Conventional Radiography ◽  
Ct Images ◽  
Ct Image ◽  
Video Monitor ◽  
Cross Sectional ◽  
X Ray ◽  
Technical Accuracy ◽  
Conventional Film

Abstract X-ray microfocus radioscopy and computed tomography (CT) offer detailed information on the internal assembly and material condition of objects under failure analysis investigation. Using advanced systems for the acquisition of radioscopic and CT images, failure analysis investigations are improved in technical accuracy at a reduced schedule and cost over alternative approaches. A versatile microfocus radioscopic system with CT capability has been successfully implemented as a standard tool in the Boeing Defense & Space Group Failure Analysis Laboratory. Using this tool, studies of electronic, electromechanical and composite material items have been performed. Such a system can pay for itself within two years through higher productivity of the laboratory, increased laboratory value to the company and resolution of critical problems whose worth far exceeds the value of the equipment. The microfocus X-ray source provides projection magnification images that exceed the sensitivity to fine detail that can be obtained with conventional film radiography. Radioscopy, which provides real-time images on a video monitor, allows objects to be readily manipulated and oriented for optimum x-ray evaluation, or monitored during dynamic processes to check performance. Combined with an accurate manipulating stage and data acquisition system x-ray measurements can be used for CT image reconstruction. The CT image provides a cross sectional view of the interior of an object without the interference of superposition of features found in conventional radiography. Accurate dimensional measurements and material constituent identification are possible from the CT images. By taking multiple, contiguous CT slices entire three dimensional data files can be generated of objects.

USE OF EFFERENT THERAPY METHODS IN THE TREATMENT OF DESTRUCTIVE PANCREATITIS

Vestnik ◽  
2021 ◽  
pp. 206-209
Author(s):  
А.Т. Джумабеков ◽  
А.Ж. Артыкбаев ◽  
Р.Е. Каштаев ◽  
С.С. Калиева ◽  
С.Ж. Жанбырбаев ◽  
...  
Keyword(s):  
Septic Shock ◽  
Inpatient Treatment ◽  
Central City ◽  
Intensive Therapy ◽  
Clinical Manifestations ◽  
Respiratory Disorders ◽  
Clinical Hospital ◽  
Severe Intoxication ◽  
Sepsis And Septic Shock

Своевременное включение методов эфферентной терапии (гемодиафильтрация, плазмаферез) в комплексную интенсивную терапию сепсиса и септического шока у больных с острым деструктивным панкреатитом, находящихся на стационарном лечении в ЦГКБ г. Алматы, позволило быстро стабилизировать гемодинамику, респираторные нарушения и отказаться от применения адреномиметиков, а также значительно уменьшить клинические проявления тяжелой интоксикации, гипоксии и эндотоксикоза. Timely inclusion of efferent therapy methods (hemodiafiltration, plasmapheresis) in the complex intensive therapy of sepsis and septic shock in patients with acute destructive pancreatitis who are inpatient treatment at the Central city clinical hospital in Almaty, made it possible to quickly stabilize hemodynamics, respiratory disorders and abandon the use of adrenomimetics, as well as significantly reduce the clinical manifestations of severe intoxication, hypoxia and endotoxicosis.

In-situ X-ray Computed Tomography Analysis of Fracture Mechanisms in Ultrasonic Additively Manufactured Al-6061 Alloy

2021 ◽  
pp. 102401
Author(s):  
Ercan Cakmak ◽  
Maxim N. Gussev ◽  
Thomas R. Watkins ◽  
David J. Arregui-Mena ◽  
Kurt A. Terrani
Keyword(s):  
Computed Tomography ◽  
Fracture Mechanisms ◽  
X Ray ◽  
Al 6061 ◽  
X Ray Computed ◽  
Tomography Analysis
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