Morphological changes in the vertebral artery subsequent to cervical spine degeneration and aging: analyses by computed tomography angiography using multiplanar and three-dimensional reconstructions

Author(s):  
Takashi Ohnishi ◽  
Kota Suda ◽  
Miki Komatsu ◽  
Satoko Matsumoto Harmon ◽  
Takamasa Watanabe ◽  
...  
2020 ◽  
Vol 9 (1) ◽  
pp. 43-48
Author(s):  
A. V. Kolsanov ◽  
A. K. Nazaryan ◽  
A. S. Voronin ◽  
O. A. Gelashvili

The article discusses variant anatomy of the renal arteries, potentials of three-dimensional modeling and use of these data in clinical practice. Despite a large number of studies based on both morphological and clinical approaches there is no general consensus regarding options for dividing the renal artery, the number of its branches, their topolocalization. This is due to the fact that most of the research studies are based on cadaveric material, fixed and unfixed. It is difficult to apply these data to explain medical conditions and pathologies of particular patients. Computed tomography allows performing in vivo investigation of various morphometric parameters of the renal arteries, and these findings can subsequently be used in disease diagnostics and treatment.The aim of the study was to identify patterns of topography, linear dimensions and variant anatomy of the human renal arteries based on computed tomography angiography (CTA) with three-dimensional modeling, and to apply CTA findings in clinical practice.Material and methods. The study included CTA images of the abdomen of 130 patients, and their threedimensional models. A hardware-software complex "Luch-S" and software complex "Avtoplan" (Russian project) were used to perform morphometric analysis. The diameter of the renal artery mouth, the level of origin of the renal artery mouths, as well as the angles between the renal arteries and the abdominal aorta were analyzed morphometrically and statistically.Results. The authors have developed recommendations how to use three-dimensional modeling of vascular- organ complexes in patients at the stage of preoperative planning and intraoperative navigation in clinical practice. Generated dataset of personalized morphometric data can be applied to teach basic operation techniques involving possible damage to abnormal vessels, as well as training specific surgical procedures involving the kidney and its vessels in a simulation-based surgical clinic.


2006 ◽  
Vol 43 (5) ◽  
pp. 532-538 ◽  
Author(s):  
Zainul A. Rajion ◽  
Grant C. Townsend ◽  
David J. Netherway ◽  
Peter J. Anderson ◽  
Toby Hughes ◽  
...  

Objective: To compare morphological and positional variations of the hyoid bone in unoperated infants with cleft lip and palate (CL/P) with those in noncleft infants. Design: Retrospective, cross sectional. Patients and Methods: Three-dimensional computed tomography scans were obtained from 29 unoperated CL/P infants of Malay origin aged between 0 and 12 months and from 12 noncleft infants in the same age range. Observations were made and measurements were obtained with a software package developed at the Australian Craniofacial Unit. The sizes of the hyoid bones and the position of the hyoid body and epiglottis in relation to the cervical spine were measured. Anatomical anomalies of the hyoid and prevalence of aspiration pneumonia were also documented. Results: The hyoid bones and epiglottis were found to be located more inferiorly in CL/P infants compared with the noncleft infants. Also, 17% (5/29) of the CL/P infants had nonossified hyoid bodies. Conclusion: The results suggest that there are differences in the location and genesis of the hyoid bone in infants with CL/P that warrant further investigation.


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