scholarly journals Complicated coarctation repair: The importance of three-dimensional cross-sectional imaging in late postoperative assessment

2019 ◽  
Vol 12 (2) ◽  
pp. 178
Author(s):  
Inga Voges ◽  
AndreaFidalgo Garcia ◽  
Rizwan Ahmed ◽  
Evangelia Nyktari ◽  
Piers Daubeney
Keyword(s):  
Three Dimensional ◽  
Cross Sectional ◽  
Postoperative Assessment ◽  
Coarctation Repair ◽  
Cross Sectional Imaging ◽  
Sectional Imaging

scholarly journals THE ETIOLOGIC RELEVANCE OF 3-D PATHOANATOMY OF ADOLESCENT IDIOPATHIC SCOLIOSIS

2017 ◽  
Vol 16 (4) ◽  
pp. 302-307
Author(s):  
Tom Schlösser ◽  
Rob Brink ◽  
René Castelein
Keyword(s):  
Adolescent Idiopathic Scoliosis ◽  
Idiopathic Scoliosis ◽  
Three Dimensional ◽  
Imaging Studies ◽  
Cross Sectional ◽  
Ongoing Research ◽  
Biomechanical Loading ◽  
Cross Sectional Imaging ◽  
Sectional Imaging ◽  
The One

ABSTRACT Despite many years of dedicated research into the etiopathogenesis of adolescent idiopathic scoliosis, there is still no single distinct cause for this puzzling condition. In this overview, we attempt to link knowledge on the complex three-dimensional pathoanatomy of AIS, based on our ongoing research in this field, with etiopathogenic questions. Evidence from multiple recent cross-sectional imaging studies is provided that supports the hypothesis that AIS has an intrinsic biomechanical basis: an imbalance between the biomechanical loading of the upright human spine due to its unique sagittal configuration on the one hand, and the body’s compensating mechanisms on the other. The question that remains in the etiology of AIS, and the focus of our ongoing research, is to determine what causes or induces this imbalance.

Direct cross-sectional imaging using X-ray Compton scattering: application to commercial batteries

2021 ◽  
Vol 28 (4) ◽  
Author(s):  
Naruki Tsuji ◽  
Kentaro Kajiwara ◽  
Masayoshi Itou ◽  
Yoshiharu Sakurai
Keyword(s):  
Compton Scattering ◽  
Three Dimensional ◽  
Regions Of Interest ◽  
Cross Sectional ◽  
X Ray ◽  
Dimensional Image ◽  
Sample Rotation ◽  
Direct Cross ◽  
Cross Sectional Imaging ◽  
Sectional Imaging

A synchrotron-based technique using Compton scattering imaging is presented. This technique has been applied to a coin battery (CR2023), and the cross-sectional image has been obtained in 34 ms without sample rotation. A three-dimensional image of the whole structure has been reconstructed from 74 cross-sectional images taken consecutively by scanning the incident, wide X-ray beam along one direction. This work demonstrates that quick cross-sectional imaging of regions of interest and three-dimensional image reconstruction without sample rotation are feasible using Compton scattering imaging.

Radiography and ultrasound of the equine neck

UK-Vet Equine ◽  
2021 ◽  
Vol 5 (4) ◽  
pp. 142-149
Author(s):  
Jonathon J Dixon ◽  
Lucy Meehan
Keyword(s):  
Computed Tomography ◽  
Soft Tissue ◽  
Ultrasound Examination ◽  
Imaging Modality ◽  
Three Dimensional ◽  
Cross Sectional ◽  
Articular Process ◽  
Planar Images ◽  
Cross Sectional Imaging ◽  
Sectional Imaging

Diagnostic imaging of the equine neck is undertaken for a wide variety of conditions. In many cases, radiography is the principal imaging modality, often complemented by ultrasound examination. Common conditions encountered include osteoarthritis, articular process joint osteochondral fragmentation, cervical vertebral malformation (‘wobbler’), fractures and numerous soft tissue lesions. The complex three-dimensional anatomy of the region limits interpretation of planar images and, in some cases, cross-sectional imaging (such as computed tomography) may be required. However, careful use of radiography and ultrasound can help clinicians to achieve a diagnosis in many cases, often from combining conventional and lesion-orientated projections with a thorough clinical examination.

Imaging and Strain Analysis of Threading-Edge and Basal-Plane Dislocations in 4H-SiC Using X-Ray Three-Dimensional Topography

2012 ◽  
Vol 725 ◽  
pp. 3-6 ◽  
Author(s):  
Ryohei Tanuma ◽  
Daisuke Mori ◽  
Isaho Kamata ◽  
Hidekazu Tsuchida
Keyword(s):  
Basal Plane ◽  
Three Dimensional ◽  
Strain Analysis ◽  
Cross Sectional ◽  
X Ray ◽  
Substrate Interface ◽  
Cross Sectional Imaging ◽  
Simulation Results ◽  
Sectional Imaging ◽  
Edge Dislocations

This paper demonstrates the X-ray three-dimensional topography of basal-plane dislocations (BPDs) and threading edge dislocations (TEDs) in 4H-SiC. Cross-sectional imaging shows the propagation of BPDs from a substrate to an epilayer and the conversion of BPDs into TEDs near the epilayer/substrate interface. The strain analysis of TEDs exhibits the image of strains in the order of ±10-5. The observed strain images correlate well to simulation results.

Preoperative or preembolization lesion targeting using rotational angiographic fiducial marking in the neuroendovascular suite

2011 ◽  
Vol 114 (1) ◽  
pp. 140-145 ◽  
Author(s):  
Siok Ping Lim ◽  
Howard Lesiuk ◽  
John Sinclair ◽  
Cheemun Lum
Keyword(s):  
Three Dimensional ◽  
Transverse Sinus ◽  
Target Lesion ◽  
Occipital Artery ◽  
Precise Localization ◽  
Cross Sectional ◽  
Arteriovenous Fistulas ◽  
First Case ◽  
Cross Sectional Imaging ◽  
Sectional Imaging

Three-dimensional rotational digital subtraction (DS) angiography and DynaCT allow precise localization of intracranial arteriovenous fistulas (AVFs) with fiducial markers that have helped in surgical planning. These techniques are particularly useful when the AVF is not evident on cross-sectional imaging. The authors demonstrate the utility of 3D DS angiography and DynaCT in the localization of intracranial AVFs in 3 cases. Their first case was a dural AVF with multiple arterial feeders from the left occipital artery that drained into the left transverse sinus. Blood flow to the left transverse sinus was first decreased by embolizing the branch arterial feeders with polyvinyl alcohol particles. Thereafter, 3D DS angiography enabled precise localization of the site for the bur hole creation with a fiducial to allow access for the transverse sinus in the second part of the procedure where definitive transvenous sinus embolization of the dural AVF with coils was performed. They also used 3D DS angiography and DynaCT with fiducials for precise localization of a superficial pial AVF (Case 2) and a tentorial AVF (Case 3) not visible on cross-sectional angiography. With the precise localization of the target lesion, the neurosurgeons were able to perform relatively small craniotomies, minimizing the cranial opening yet allowing the opening for full access to the lesion. By correlating 3D DS angiography/DynaCT with CT images, the neurosurgeon could use neuronavigation in cases of AVF not appreciated on cross-sectional imaging.

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