Thalassemia Major in a 49‐year‐old Thai female: Gross and X‐ray Examination of Dry Bone

2021 ◽  
Author(s):  
Nawaporn Techataweewan ◽  
Robert W. Mann ◽  
Melandri Vlok ◽  
Sittiporn Ruengdit ◽  
Charnchai Panthongviriyakul ◽  
...  
Keyword(s):  
Thalassemia Major ◽  
X Ray ◽  
Dry Bone

Estimation of collagen presence in dry bone using combined X-ray and neutron radiography

2018 ◽  
Vol 139 ◽  
pp. 141-145 ◽  
Author(s):  
Arkadiusz Sołtysiak ◽  
Ewelina A. Miśta-Jakubowska ◽  
Michał Dorosz ◽  
Tymoteusz Kosiński ◽  
Izabela Fijał-Kirejczyk
Keyword(s):  
Neutron Radiography ◽  
X Ray ◽  
Dry Bone

Evaluation of Bone Mineral Density of the Lumbar Spine in Patients With ??-Thalassemia Major With Dual-Energy X-Ray Absorptiometry and Quantitative Computed Tomography

2006 ◽  
Vol 28 (2) ◽  
pp. 73-78 ◽  
Author(s):  
Nicholas G Angelopoulos ◽  
Eugenia Katounda ◽  
Grigorios Rombopoulos ◽  
Anastasia Goula ◽  
Victoria Kaltzidou ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Bone Mineral Density ◽  
Lumbar Spine ◽  
Bone Mineral ◽  
Quantitative Computed Tomography ◽  
Thalassemia Major ◽  
Dual Energy ◽  
Mineral Density ◽  
X Ray

Dual-energy X-ray absorptiometry pitfalls in Thalassemia Major

Endocrine ◽  
2019 ◽  
Vol 65 (3) ◽  
pp. 469-482
Author(s):  
Fabio Pellegrino ◽  
Maria Chiara Zatelli ◽  
Marta Bondanelli ◽  
Aldo Carnevale ◽  
Corrado Cittanti ◽  
...  
Keyword(s):  
Thalassemia Major ◽  
Dual Energy ◽  
X Ray

scholarly journals Dual-Energy X-ray Absorptiometry Predictors of Vertebral Deformities in Beta-Thalassemia Major

2018 ◽  
Vol 21 (4) ◽  
pp. 507-516 ◽  
Author(s):  
Giangiacomo Osella ◽  
Adriano Massimiliano Priola ◽  
Sandro Massimo Priola ◽  
Antonio Piga ◽  
Filomena Longo ◽  
...  
Keyword(s):  
Thalassemia Major ◽  
Dual Energy ◽  
Beta Thalassemia ◽  
X Ray ◽  
Vertebral Deformities ◽  
Beta Thalassemia Major

scholarly journals Body Composition in Adult Patients with Thalassemia Major

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Marianna Vlychou ◽  
Evangelos Alexiou ◽  
Paschalis Thriskos ◽  
Ioannis Fezoulidis ◽  
Katerina Vassiou
Keyword(s):  
Body Composition ◽  
Adult Male ◽  
Lean Mass ◽  
Thalassemia Major ◽  
Dual Energy ◽  
Adult Patients ◽  
Whole Body ◽  
Male And Female ◽  
X Ray ◽  
Male Patients

Objective. To assess body composition in adult male and female patients with thalassemia major by dual-energy X-ray absorptiometry (DXA) and to compare the findings with a group of healthy age-matched controls. Methods. Our study group included sixty-two patients (27 males, mean age 36 years, and 35 females, mean age 36.4 years) and fifteen age-matched healthy controls. All patients had an established diagnosis of thalassemia major and followed a regular blood transfusion scheme since childhood and chelation treatment. Fat, lean, and bone mineral density (BMD) were assessed with dual-energy X-ray absorptiometry. Ferritin levels and body mass index of all patients and controls were also recorded. Student t-test and Wilcoxon test were performed and statistical significance was set at p<0.05. Results. BMD and whole body lean mass are lower in both male and female adult patients compared with controls (p<0.01 in both groups), whereas whole body fat mass was found to have no statistically significant difference compared to controls. Regional trunk fat around the abdomen was found to be lower in male patients compared to controls (p=0.02). Conclusion. Severe bone loss and diminished lean mass are expected in adult male and female patients with thalassemia major. Fat changes seem to affect mainly male patients.

Space and Time Distribution of Hard X-Ray Emission in a Loop at the Beginning of a Flare

1994 ◽  
Vol 144 ◽  
pp. 275-277
Author(s):  
M. Karlický ◽  
J. C. Hénoux
Keyword(s):  
Time Distribution ◽  
Electron Bombardment ◽  
Spatial Evolution ◽  
Superthermal Electrons ◽  
Flare Loop ◽  
X Ray ◽  
Superthermal Electron ◽  
Flare Loops ◽  
Chromospheric Evaporation ◽  
Temporal And Spatial

AbstractUsing a new ID hybrid model of the electron bombardment in flare loops, we study not only the evolution of densities, plasma velocities and temperatures in the loop, but also the temporal and spatial evolution of hard X-ray emission. In the present paper a continuous bombardment by electrons isotropically accelerated at the top of flare loop with a power-law injection distribution function is considered. The computations include the effects of the return-current that reduces significantly the depth of the chromospheric layer which is evaporated. The present modelling is made with superthermal electron parameters corresponding to the classical resistivity regime for an input energy flux of superthermal electrons of 109erg cm−2s−1. It was found that due to the electron bombardment the two chromospheric evaporation waves are generated at both feet of the loop and they propagate up to the top, where they collide and cause temporary density and hard X-ray enhancements.

Some Problems in Understanding the Solar Corona

1994 ◽  
Vol 144 ◽  
pp. 1-9
Author(s):  
A. H. Gabriel
Keyword(s):  
Solar Corona ◽  
Solar Atmosphere ◽  
Theoretical Modelling ◽  
Total System ◽  
Major Advance ◽  
X Ray ◽  
Proper Perspective ◽  
Space Observations

The development of the physics of the solar atmosphere during the last 50 years has been greatly influenced by the increasing capability of observations made from space. Access to images and spectra of the hotter plasma in the UV, XUV and X-ray regions provided a major advance over the few coronal forbidden lines seen in the visible and enabled the cooler chromospheric and photospheric plasma to be seen in its proper perspective, as part of a total system. In this way space observations have stimulated new and important advances, not only in space but also in ground-based observations and theoretical modelling, so that today we find a well-balanced harmony between the three techniques.

White-Light Coronal Structures: Streamers and CMEs

1994 ◽  
Vol 144 ◽  
pp. 82
Author(s):  
E. Hildner
Keyword(s):  
Emission Line ◽  
Electron Density ◽  
White Light ◽  
Coronal Mass Ejections ◽  
X Rays ◽  
Solar Cycles ◽  
Temperature Function ◽  
X Ray ◽  
Eclipse Observations ◽  
Coronal Structures

AbstractOver the last twenty years, orbiting coronagraphs have vastly increased the amount of observational material for the whitelight corona. Spanning almost two solar cycles, and augmented by ground-based K-coronameter, emission-line, and eclipse observations, these data allow us to assess,inter alia: the typical and atypical behavior of the corona; how the corona evolves on time scales from minutes to a decade; and (in some respects) the relation between photospheric, coronal, and interplanetary features. This talk will review recent results on these three topics. A remark or two will attempt to relate the whitelight corona between 1.5 and 6 R⊙to the corona seen at lower altitudes in soft X-rays (e.g., with Yohkoh). The whitelight emission depends only on integrated electron density independent of temperature, whereas the soft X-ray emission depends upon the integral of electron density squared times a temperature function. The properties of coronal mass ejections (CMEs) will be reviewed briefly and their relationships to other solar and interplanetary phenomena will be noted.

Iron K-Line Emission from X-Ray Binaries

1988 ◽  
Vol 102 ◽  
pp. 47-50
Author(s):  
K. Masai ◽  
S. Hayakawa ◽  
F. Nagase
Keyword(s):  
Accretion Disk ◽  
Radiative Recombination ◽  
Characteristic Temperature ◽  
Line Emission ◽  
Ionization Front ◽  
Continuum Radiation ◽  
X Ray ◽  
Low Mass ◽  
X Ray Binaries

AbstractEmission mechanisms of the iron Kα-lines in X-ray binaries are discussed in relation with the characteristic temperature Txof continuum radiation thereof. The 6.7 keV line is ascribed to radiative recombination followed by cascades in a corona of ∼ 100 eV formed above the accretion disk. This mechanism is attained for Tx≲ 10 keV as observed for low mass X-ray binaries. The 6.4 keV line observed for binary X-ray pulsars with Tx&gt; 10 keV is likely due to fluorescence outside the He II ionization front.

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