Identification of sampling patterns for high‐resolution compressed sensing MRI of porous materials: ‘learning’ from X‐ray microcomputed tomography data

2019 ◽  
Vol 276 (2) ◽  
pp. 63-81 ◽  
Author(s):  
K. KARLSONS ◽  
D.W. DE KORT ◽  
A.J. SEDERMAN ◽  
M.D. MANTLE ◽  
H. DE JONG ◽  
...  
Keyword(s):  
High Resolution ◽  
Compressed Sensing ◽  
Porous Materials ◽  
Microcomputed Tomography ◽  
X Ray ◽  
Tomography Data

scholarly journals Coping with the extremes: comparative osteology of the tepui-associated toad Oreophrynella and its bearing on the evolution of osteological novelties in the genus

2020 ◽  
Vol 190 (1) ◽  
pp. 114-139
Author(s):  
Philippe J R Kok ◽  
Milan A J van der Velden ◽  
D Bruce Means ◽  
Sebastian Ratz ◽  
Iván Josipovic ◽  
...  
Keyword(s):  
Body Weight ◽  
High Resolution ◽  
Vertebral Column ◽  
Relative Length ◽  
Single Species ◽  
Microcomputed Tomography ◽  
X Ray ◽  
Character Reconstruction ◽  
Ancestral Character Reconstruction ◽  
Comparative Osteology

Abstract The only study of the osteology of the toad genus Oreophrynella dates back to 1971 and was based on a single species. Here, we use high-resolution X-ray microcomputed tomography to analyse the osteology of all nine described Oreophrynella species, which are compared with representatives of other bufonid lineages. Oreophrynella is unique among bufonids in having opposable digits. Osteological synapomorphies confirmed for the genus are as follows: presence of parietal fontanelles and exposed frontoparietal fontanelle, absence of quadratojugal, five presacral vertebrae, distally enlarged terminal phalanges and urostyle greatly expanded into flanges. Ancestral character reconstruction indicates that arboreal habits in some Oreophrynella species are likely to have evolved after the evolution of opposable digits. Opposable digits, in combination with an extension of the interdigital integument and the relative length/orientation of the digits, are likely to be adaptations to facilitate life on rocky tepui summits and an exaptation to arboreality. Cranial simplification in Oreophrynella, in the form of cranial fontanelles and absence of the quadratojugal, is possibly driven by a reduction of developmental costs, increase in flexibility and reduction of body weight. Cranial simplification combined with the shortening of the vertebral column and the shift towards a partly firmisternal girdle might be adaptations to the peculiar tumbling behaviour displayed by Oreophrynella.

3D Tissue-Engineered Construct Analysis via Conventional High-Resolution Microcomputed Tomography Without X-Ray Contrast

2013 ◽  
Vol 19 (5) ◽  
pp. 327-335 ◽  
Author(s):  
Roman S. Voronov ◽  
Samuel B. VanGordon ◽  
Robert L. Shambaugh ◽  
Dimitrios V. Papavassiliou ◽  
Vassilios I. Sikavitsas
Keyword(s):  
High Resolution ◽  
Microcomputed Tomography ◽  
X Ray

scholarly journals Inner ear morphology of diadectomorphs and seymouriamorphs (Tetrapoda) uncovered by high‐resolution x‐ray microcomputed tomography, and the origin of the amniote crown group

Palaeontology ◽  
2019 ◽  
Vol 63 (1) ◽  
pp. 131-154 ◽  
Author(s):  
Jozef Klembara ◽  
Miroslav Hain ◽  
Marcello Ruta ◽  
David S Berman ◽  
Stephanie E. Pierce ◽  
...  
Keyword(s):  
High Resolution ◽  
Inner Ear ◽  
Microcomputed Tomography ◽  
Crown Group ◽  
X Ray ◽  
Ear Morphology

scholarly journals Braincase and Inner Ear Anatomy of the Late Carboniferous Tetrapod Limnoscelis dynatis (Diadectomorpha) Revealed by High-Resolution X-ray Microcomputed Tomography

2021 ◽  
Vol 9 ◽  
Author(s):  
Jozef Klembara ◽  
Marcello Ruta ◽  
Miroslav Hain ◽  
David S. Berman
Keyword(s):  
High Resolution ◽  
Semicircular Canals ◽  
Sister Group ◽  
Microcomputed Tomography ◽  
Data Matrix ◽  
Phylogenetic Position ◽  
Published Data ◽  
X Ray ◽  
Character Weighting ◽  
Anterior Semicircular Canal

The braincase anatomy of the Pennsylvanian diadectomorph Limnoscelis dynatis is described in detail, based upon high-resolution X-ray microcomputed tomography. Both supraoccipitals and most of the prootics and opisthotics are preserved. The known portions of the left prootic, opisthotic, and supraoccipital enclose complete sections of the endosseous labyrinth, including the anterior, posterior, and lateral semicircular canals, the vestibule, the cochlear recess, and the canal for the endolymphatic duct. The fossa subarcuata is visible anteromedial to the anterior semicircular canal. The presumed endolymphatic fossae occur in the dorsal wall of the posteromedial portion of the supraoccipital. Both the fossa subarcuata and the fossa endolymphatica lie in the cerebellar portion of the cranial cavity. In order to investigate the phylogenetic position of L. dynatis we used a recently published data matrix, including characters of the braincase, and subjected it to maximum parsimony analyses under a variety of character weighting schemes and to a Bayesian analysis. Limnoscelis dynatis emerges as sister taxon to L. paludis, and both species form the sister group to remaining diadectomorphs. Synapsids and diadectomorphs are resolved as sister clades in ∼90% of all the most parsimonious trees from the unweighted analysis, in the single trees from both the reweighted and the implied weights analyses, as well in the Bayesian tree.

scholarly journals High resolution 3D laboratory x-ray tomography data of femora from young, 1–14 day old C57BL/6 mice

Data in Brief ◽  
2015 ◽  
Vol 4 ◽  
pp. 32-33 ◽  
Author(s):  
Emely L. Bortel ◽  
Georg N. Duda ◽  
Stefan Mundlos ◽  
Bettina M. Willie ◽  
Peter Fratzl ◽  
...  
Keyword(s):  
High Resolution ◽  
X Ray ◽  
Tomography Data

Application of high-resolution X-ray microcomputed tomography for coal washability analysis

2018 ◽  
Vol 124 ◽  
pp. 137-148 ◽  
Author(s):  
Tuan D. Nguyen ◽  
Anh V. Nguyen ◽  
Chen-Luh Lin ◽  
Jan D. Miller
Keyword(s):  
High Resolution ◽  
Microcomputed Tomography ◽  
X Ray ◽  
Coal Washability
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