INFLUENCE OF THE CHEMICAL SHIFT ARTIFACT ON MEASUREMENTS OF COMPACT BONE THICKNESS IN EQUINE DISTAL LIMB MR IMAGES

2010 ◽  
Vol 51 (4) ◽  
pp. 415-420 ◽  
Author(s):  
ABIGAIL N. DIMOCK ◽  
MATHIEU SPRIET
2014 ◽  
Vol 73 (6) ◽  
pp. 2225-2233 ◽  
Author(s):  
Mirko Meissner ◽  
Marco Reisert ◽  
Thimo Hugger ◽  
Jürgen Hennig ◽  
Dominik von Elverfeldt ◽  
...  

2021 ◽  
Author(s):  
Sevim Cengiz ◽  
Muhammed Yildirim ◽  
Abdullah Bas ◽  
Esin Ozturk-Isik

Proton magnetic resonance spectroscopic imaging (1H-MRSI) provides noninvasive evaluation of brain metabolism. However, there are some limitations of 1H-MRSI preventing its wider use in the clinics, including the spectral quality issues, partial volume effect and chemical shift artifact. Additionally, it is necessary to create metabolite maps for analyzing spectral data along with other MRI modalities. In this study, a MATLAB-based open-source data analysis software for 3D 1H-MRSI, called Oryx-MRSI, which includes modules for visualization of raw 1H-MRSI data and LCModel outputs, chemical shift correction, tissue fraction calculation, metabolite map production, and registration onto standard MNI152 brain atlas while providing automatic spectral quality control, is presented. Oryx-MRSI implements region of interest analysis at brain parcellations defined on MNI152 brain atlas. All generated metabolite maps are stored in NIfTI format. Oryx-MRSI is publicly available at https://github.com/sevimcengiz/Oryx-MRSI along with six example datasets.


Author(s):  
Muhamed Ajanović ◽  
Selma Tosum Pošković ◽  
Alma Kamber-Ćesir ◽  
Edita Redžović ◽  
Mirsad Kacila ◽  
...  

Introduction: Dental implantology is the branch of dentistry that is gaining greater significance because a larger number of patients come with requests of implant placements. During dental implant placements, with patients with whom operation is carried out in the mandible, very frequently nervus alveolaris inferior can be injured. The nerve injury may occur during the implant placement, but the nerve may also be injured in case of harvesting of intraoral bone graft. During the bone graft harvesting, but also during any other procedure in the dentistry that entails working on vestibular side of corpus of the mandible, in order not to injure the nervus alveolaris inferior, it is important to familiarize oneself with the distance of the nerve from the outer vestibular cortex of the mandible. The objective of the study was to assess the vestibular bone thickness of the mandible in relation to the mandibular canal with the help of analysis of cone-beam computed tomography (CBCT) images.Methods: It was accessed the database of CBCT images taken at the School of Dental Medicine at the University of Sarajevo, where out of 700 reviewed CBCT images, an analysis of 322 CBCT images was conducted that satisfied inclusion criteria of the study. CBCT images were taken using of ORTHOPHOS SLX imaging unit. The measurement was conducted by Sidexis program on cross-section of CBCT image. The measurement of vestibular bone thickness was performed, by measuring the distance from the lateral wall of the mandibular canal to buccal mandibular compact bone, in the region of the second premolar, of the first and the second molar.Results: There were statistically significant differences in vestibular bone thickness between men and women on both sides in the region of the second premolar (p < 0.001) and first molar (p = 0.016 right, p = 0.018 left). T-test demonstrated no statistically significant difference in the vestibular bone thickens between men and women on either side in the case of vestibular bone thickness of the center of the second molar (p = 0.397 right, p = 0.743 left).Conclusion: Values of vestibular thickness of the mandible are larger with men than with women in all measuring points; however, statistically more significant differences between genders have been detected in the second premolar and center of the first molar.


2016 ◽  
Vol 07 (S 01) ◽  
pp. S086-S087 ◽  
Author(s):  
Nishanth Sadashiva ◽  
Sarbesh Tiwari ◽  
Vinayak Narayan ◽  
Dhaval Shukla

2018 ◽  
Vol 11 (3) ◽  
pp. 178-182
Author(s):  
Eliska Horecka ◽  
Cenek Horecky ◽  
Lenka Kovarikova ◽  
Anna Musilova ◽  
Ales Knoll ◽  
...  

Experiments were performed in 110 ISA Brown egg production hens (Gallus gallus), kept from 15 to 26 weeks of age in enriched (furnished) housing technology. The present objective was to investigate the presence of single nucleotide polymorphisms (SNPs) of the ATP2B1 gene and their effects on calcium homeostasis in laying hens. The plasma membrane calcium-transporting ATPase 1 gene (ATP2B1) in hens is located on chromosome 1, region 43 273 706 – 43 305 815 bp. The ATP2B1 gene has 21 exons, and in this study three were genotyped. In each experimental group of animals, only alleles without deletions in exon 10 and only allele A in exon 12 were found. In exon 8, only genotypes CC/CC, TT/CC and TT/TT were found. These genotypes are associated with femur breaking strength, bone diameter, bone marrow diameter and compact bone thickness. No significant effects of SNPs in exon 8 on bone characteristics were found.


1993 ◽  
Vol 16 (3) ◽  
pp. 233-238 ◽  
Author(s):  
Stephan H. Duda ◽  
Michael Laniado ◽  
Fritz Schick ◽  
Claus D. Claussen
Keyword(s):  

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