Tibia Bone Segmentation in X-ray Images - A Comparative Analysis

The purpose of this report is the determination of the diagnostic reliability of routine radiologic and CT examinations for pelvic injuries in children. The comparative analysis of these examinations and postmortem morphologic studies of pelvic spesimens was performed in 10 children, aged 2-12 years. It was shown that the X-ray method allowed to diagnose only 47.37% and CT method - 76.32% of all real pelvic injuries (by morphological data) in those children. However, the detectability of damage of the structures that formed the anterior pelvic semi-ring was 50% by radiologic examination, and 60% by CT examination, while for the structures forming posterior pelvic semi-ring it was 44.44% and 94.44%, respectively.

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Kwestia chronologii, typologii i pochodzenia szklanej biżuterii z wczesnośredniowiecznego ośrodka grodowego w Gnieźnie

Folia Praehistorica Posnaniensia ◽

10.14746/fpp.2020.25.11 ◽

2020 ◽

Vol 25 ◽

pp. 247-289

Author(s):

Joanna Sawicka

Keyword(s):

Comparative Analysis ◽

Chemical Composition ◽

Glass Composition ◽

Starting Material ◽

14C Dating ◽

Glass Strip ◽

X Ray ◽

General Manner ◽

Physico Chemical ◽

Early Settlement

The study presents 175 artefacts from the settlement center in Gniezno – beads and rings. The materials come from settlement levels from around the mid-10th to the 13th centuries. The latest chronological findings based on 14C dating have made it possible to refine the dating, especially of the early settlement levels of the stronghold, where the vast majority of glass artefacts come from. Threeba sic groups of beads have been distinguished based on the technique of their production – beads made of a drawing a tube, the technique of winding a glass strip, as well as casting and sintering. The results of 7 physico-chemical analyzes of the glass composition (performed with the X-Ray Fluorescence, XRF method) are presented. Physicochemical analyzes of the chemical composition of the tested beads made it possible to determine the technological group and the type of glass. An attempt was made to explain the origin of the starting material (glass) for jewelery. A comparative analysis made it possible to indicate in a general manner possible manufacturers and to outline the likely directions of the influx of these glass ornaments to Gniezno.

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Ways to optimize the assessment of lean body mass in hemodialysis patients

Urologicheskie vedomosti ◽

10.17816/uroved9123-28 ◽

2019 ◽

Vol 9 (1) ◽

pp. 23-28

Author(s):

Juliia V. Lavrishcheva ◽

Aleksandr A. Jakovenko

Keyword(s):

Comparative Analysis ◽

Lean Body Mass ◽

Body Mass ◽

Hemodialysis Patients ◽

Dual Energy ◽

European Part ◽

X Ray ◽

Bland Altman Method ◽

Total Lean Body Mass ◽

The Russian Federation

The aim. To conduct a comparative analysis of the effectiveness of methods for assessing lean body mass in haemodialysis patients. Patients and methods. A total of 317 patients receiving treatment with programmatic bicarbonate haemodialysis in 9 haemodialysis centers in 5 regions of the European part of the Russian Federation were examined for 8.2 ± 5.1 years, among them 171 women and 146 men, the average age was 57.1 ± 11.3 years. Dual-energy X-ray absorptiometry and bioimpedancemetry were used to assess lean body mass. Results. The results of determining the total lean body mass obtained from the results of dual-energy X-ray absorptiometry and bioimpedancemetry were compared using the Bland-Altman method. The correlation coefficient between the indicators was r = 0.994, p < 0.0001, delta (M ± σ) was –0.48 ± 0.91 kg, CI 95% (–0.71)–(–0.26) kg. Conclusion. Dual-energy X-ray absorptiometry has no significant advantages compared with bioimpedancemetry when evaluating lean body mass in haemodialysis patients.

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Comparison of Ex-Vivo X-Ray changes in different groups of injectable biomaterials (JectOS, MIIGÂ®X3, Osteopaste) in critical size defect of Rabbit Tibia Bone

IIUM Medical Journal Malaysia ◽

10.31436/imjm.v15i1.1348 ◽

2016 ◽

Vol 15 (1) ◽

Author(s):

Wan Maihan Wan Salleh ◽

Mohamed Azril Mohamed Amin ◽

Wan Muhamad Salahudin Wan Salleh ◽

Zunariah Buyong

Keyword(s):

Critical Size ◽

Ex Vivo ◽

Control Group ◽

Sham Operation ◽

Critical Size Defect ◽

X Ray ◽

Tibia Bone ◽

Local Product ◽

Rabbit Tibia ◽

Radiological Changes

Introduction: Critical size defect (CSD) is defined as a defect that will not heal without intervention within the lifetime. The gold standard treatment for CSD is bone graft, although with some limitations. Substitute biomaterials were introduced to overcome the limitations. JectOS and MIIG® X3 are commercially available biomaterials in the market. Osteopaste is a local product produced by SIRIM. The objective of this study is to compare the radiological changes between Osteopaste, JectOS and MIIG® X3 in CSD in rabbit tibia bone. Methods: New Zealand White rabbits were divided into four groups: control group (Sham operation, n=3); Osteopaste treatment (n=12); JectOS treatment (n=12) and MIIG® X3 treatment (n=12). CSD was created at the right proximal tibia bone of the rabbits in each of the groups and the defects were filled with the biomaterial as assigned. Four animals from each group were sacrificed at 6 weeks, 12 weeks and 24 weeks respectively. The bones were harvested and x-ray imaging performed using SkyScan 1176 at 90kV, 281µA, resolution 4000x2672 with Aluminium 1.0mm. Results: The radiographic density at the CSD area was more prominent in the JectOS group throughout the 24 weeks. Meanwhile, in the MIIG® X3, full resorption occurred at 24 weeks. The Osteopaste group exhibited radiographic density in between that of JectOS and MIIG® X3. Conclusions: Different types of biomaterial exhibit different radiological changes over the period of bone healing.

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