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1,053 results for “Computed Tomography”
FIGURE 4 A–I in High-resolution X-ray computed tomography of an extant new Donuea (Araneae: Liocranidae) species in Madagascan copal
FIGURE 4 A–I. Donuea collustrata sp. n., male palp. A–C, rl; D–F, ve; G–I, pl; A, D, G, X-ray CT images of right palp of copal specimen, inverted; B, E, H, stereomicroscope photographs of left palp of holotype; C, F, I, drawings of left palp of holotype. Scale bar: 0.25.
FIGURE 2 A–H in High-resolution X-ray computed tomography of an extant new Donuea (Araneae: Liocranidae) species in Madagascan copal
FIGURE 2 A–H. Donuea collustrata sp. n. A, copal piece holding specimen, after trimming; B, copal preserved specimen, do; C, copal specimen, ve; D, frontal view of copal specimen, showing opaque layer of air bubbles; E, leg spination scheme of holotype, legend of unfolded article below; F, copal specimen, reconstruction of habitus, do; G, right male palp of copal specimen, rl; H, left male palp of copal specimen, pl. Scale bars: B, C: 1.0; F: 1.5; H: 0.25.
FIGURE 3 A–M in High-resolution X-ray computed tomography of an extant new Donuea (Araneae: Liocranidae) species in Madagascan copal
FIGURE 3 A–M. Donuea collustrata sp. n., copal specimen, X-ray CT images. A, habitus, ve; B, transversal section of right male palp, showing conductor (green) and embolus (pink) originating from behind MA (blue); C, frontal view of right male palp, colour coding as in B; D, left male palp, pl; E, left male palp, pl-ve; F, left male palp, ve; G, left male palp, rl-ve; H, left male palp, rl; I, right male palp, rl-do view, showing embolus, PTA and RTA; J, right male palp, rl-ve, showing bifid RTA; K, right male palp, rl; L, caudal view of right male palp, showing RTA (left) and PTA (right); M, frontal view of eye region, chilum artificially darkened.
FIGURE 1 A–E in High-resolution X-ray computed tomography of an extant new Donuea (Araneae: Liocranidae) species in Madagascan copal
FIGURE 1 A–E. Donuea collustrata sp. n., holotype. F. Donuea decorsei, holotype, MNHN. A, habitus, do; B, habitus, lat.; C, habitus, ve; D, body, do; E, prosoma, ve; F, left male palp, ve. Scale bars: D, E: 1.0; F: 0.5.
Effects of individualized Electrical Impedance Tomography and image reconstruction settings upon the assessment of regional ventilation distribution: Comparison to 4-dimensional Computed Tomography in a porcine model
<p>Reconstruction Models used for identification of optimal settings for comparison to CT images. Forward models are available in the supplement of the article but were removed form the inverse models due to redundance storage within each model.</p> <p>Prior reconstruction in EIDORS, forward models have to be added again to<em> imdl.fwd_model</em> and <em>imdl.jacobian_background.fwd_model</em>.</p>
Comparison of planar digital radiography and helical standing computed tomography for assessment of condylar stress fracture risk in Thoroughbred racehorses
<p class="MsoNormal"><strong>Background</strong>: Catastrophic injury has a low incidence but leads to the death of many Thoroughbred racehorses.</p> <p class="MsoNormal"><strong>Objectives</strong>: To determine sensitivity, specificity, and reliability for condylar stress fracture risk assessment from fetlock digital radiographs (DR) and standing computed tomography (sCT).</p> <p class="MsoNormal"><strong>Study design</strong>: Controlled <em>ex vivo</em> experiment.</p> <p class="MsoNormal"><strong>Methods</strong>: A blinded set of thoracic limb fetlock DR and sCT images were prepared from 31 Thoroughbreds. Four observers evaluated the condyles and parasagittal grooves (PSG) of the third metacarpal bone for the extent of dense bone and lucency/fissure and assigned a risk assessment grade for condylar stress fracture. Sensitivity and specificity for detection of subchondral structural changes in the condyles and PSG and for risk assessment for condylar stress fracture were determined by comparison with a reference. Agreement between observers and the reference assessment and reliability between observers were determined. Intra-observer repeatability was also assessed.</p> <p class="MsoNormal"><strong>Results</strong>: Sensitivity for detection of structural change was lower than specificity for both imaging methods and all observers. For horses with normal risk, observer assessment often agreed with the reference. Sensitivity for risk assessment was lower than specificity for all observers. For horses with a high risk of injury, observers generally underestimated risk. Diagnostic sensitivity of risk assessment was improved with sCT imaging, particularly for horses with elevated risk of injury. Assessment repeatability and reliability was better with sCT than DR.</p> <p class="MsoNormal"><strong>Main limitations</strong>: The <em>ex vivo</em> study design influenced DR image sets.</p> <p class="MsoNormal"><strong>Conclusions</strong>: Risk assessment through screening with diagnostic imaging is a promising approach to improve injury prevention in racing Thoroughbreds. Knowledge of sensitivity and specificity of fetlock lesion detection provides the critical guidance needed to improve screening programs for racehorses. We found improved detection of MC3 subchondral structural change and risk assessment for condylar stress fracture with sCT <em>ex vivo</em>.</p>
Machine Learning and Radiomics analysis by Computed Tomography in colorectal liver metastases patients for RAS mutational status prediction
<p>We uploaded the Radiomics features raw data of the manuscript "<span>Machine Learning and Radiomics analysis by Computed Tomography in colorectal liver metastases patients for RAS mutational status prediction</span>"</p>
Three-Dimensional Segmentation Assisted with Clustering Analysis for Surface and Volume Measurements of Equine Incisor in Multidetector Computed Tomography Data Sets
<p>The dataset contains computed tomography (CT) images of head horses with annotations of 12 segments corresponding to areas with teeth. Imaged animals: 49 horses. Measured animal features such as surface area, and volume are included. The study was supported by the National Science Centre, Poland as a part of the project<br>Miniatura 6 No 2022/06/X/ST6/00431. </p>
3d virtual histology of the human hippocampus based on phase-contrast computed-tomography
<p>This data package contains:<br> - exemplary data sets of multiscale imaging of the human hippocampus as raw-files (gray values, segmentation masks)<br> - object properties as xlsx-files (for all data sets)<br> - analysis scripts (based on matlab, R, python)</p>
Figure 13 in Anatomical study of two previously undescribed specimens of Clevosaurus hudsoni (Lepidosauria: Rhynchocephalia) from Cromhall Quarry, UK, aided by computed tomography, yields additional information on the skeleton and hitherto undescribed bones
Figure 13. Photographs of Clevosaurus hudsoni specimen NHMUK PV R36832. A, partial left lateral view of the skull, showing the position of sclerotic ossicles in the orbital area. B, enlarged view of preserved sclerotic ossicles.
Figure 17 in Anatomical study of two previously undescribed specimens of Clevosaurus hudsoni (Lepidosauria: Rhynchocephalia) from Cromhall Quarry, UK, aided by computed tomography, yields additional information on the skeleton and hitherto undescribed bones
Figure 17. Photographs of Clevosaurus hudsoni specimen NHMUK PV R36832. A, gastralia in ventral view. B, enlarged view of apex of medial splint. C, enlarged view of overlap between medial and lateral splints.
Figure 10 in Anatomical study of two previously undescribed specimens of Clevosaurus hudsoni (Lepidosauria: Rhynchocephalia) from Cromhall Quarry, UK, aided by computed tomography, yields additional information on the skeleton and hitherto undescribed bones
Figure 10. Surface models of Clevosaurus hudsoni specimen NHMUK PV R36832. A, anterolateral view of skull showing surfaces of slender bones hidden within the matrix (large cranial elements shown for relative position). B, posteroventral view of (A).
Figure 18 in Anatomical study of two previously undescribed specimens of Clevosaurus hudsoni (Lepidosauria: Rhynchocephalia) from Cromhall Quarry, UK, aided by computed tomography, yields additional information on the skeleton and hitherto undescribed bones
Figure 18. Photograph and surface models of Clevosaurus hudsoni left hind limb specimen NHMUK PV R36846. Specimen in (A, B) dorsal, (C) ventral and (D) posterolateral views.
Figure 7 in Anatomical study of two previously undescribed specimens of Clevosaurus hudsoni (Lepidosauria: Rhynchocephalia) from Cromhall Quarry, UK, aided by computed tomography, yields additional information on the skeleton and hitherto undescribed bones
Figure 7. Photographs and surface models of Clevosaurus hudsoni specimen NHMUK PV R36832. Left quadrate in (A) lateral and (B) medial views. Palate region in (C), (D) ventral view (refer to Fig. 3A for location of view). E, left lateral view of specimen between maxilla and dentary, showing bones out of position (refer to Fig. 3A for location of view). Possible left pterygoid in (F), (G) lateral view.
Figure 6 in Anatomical study of two previously undescribed specimens of Clevosaurus hudsoni (Lepidosauria: Rhynchocephalia) from Cromhall Quarry, UK, aided by computed tomography, yields additional information on the skeleton and hitherto undescribed bones
Figure 6. Photographs and surface models of Clevosaurus hudsoni specimen NHMUK PV R36832. Left nasal in (A) dorsolateral and (B) ventromedial views. C, right postfrontal in dorsal view. D, articulation between left postfrontal and left postorbital in anterolateral view. Left postorbital in (E) lateral and (F) medial views. Left prefrontal in (G) dorsolateral and (H) posterolateral views. Left jugal in (I) lateral and (J) medial views.
Figure 2. A in Anatomical study of two previously undescribed specimens of Clevosaurus hudsoni (Lepidosauria: Rhynchocephalia) from Cromhall Quarry, UK, aided by computed tomography, yields additional information on the skeleton and hitherto undescribed bones
Figure 2. A, sketch of the original fissure locality, no longer in existence (modified after Robinson, 1957). B, photograph of the quarry from 1954; the 'pendulum' has already been removed (P.L. Robinson, unpublished notebook, NHMUK). C, copy of the original field sketch of fossil locality B by P.L. Robinson, redrawn with minor modification for clarity by the authors (after P.L. Robinson, unpublished notebook, NHMUK).
Figure 5 in Anatomical study of two previously undescribed specimens of Clevosaurus hudsoni (Lepidosauria: Rhynchocephalia) from Cromhall Quarry, UK, aided by computed tomography, yields additional information on the skeleton and hitherto undescribed bones
Figure 5. Photographs and surface models of Clevosaurus hudsoni specimen NHMUK PV R36832. Left maxilla in (A) lateral and (B) medial views. Parietals in (C) dorsal and (D) ventral views. Frontals in (E) dorsal and (F) ventral views.
Figure 12 in Anatomical study of two previously undescribed specimens of Clevosaurus hudsoni (Lepidosauria: Rhynchocephalia) from Cromhall Quarry, UK, aided by computed tomography, yields additional information on the skeleton and hitherto undescribed bones
Figure 12. Photographs and surface models of Clevosaurus hudsoni specimen NHMUK PV R36832. A, right ischium in lateral view. B, pelvic girdle bones as preserved in the specimen, out of position (right ischium in medial view). C, postcranial bones at or near the pectoral region, left lateral view.
Figure 4 in Anatomical study of two previously undescribed specimens of Clevosaurus hudsoni (Lepidosauria: Rhynchocephalia) from Cromhall Quarry, UK, aided by computed tomography, yields additional information on the skeleton and hitherto undescribed bones
Figure 4. Postcranial bones of Clevosaurus hudsoni specimen NHMUK PV R36832. (A) photograph and (B) surface model (refer to Fig. 3B for location on specimen).
Figure 16 in Anatomical study of two previously undescribed specimens of Clevosaurus hudsoni (Lepidosauria: Rhynchocephalia) from Cromhall Quarry, UK, aided by computed tomography, yields additional information on the skeleton and hitherto undescribed bones
Figure 16. Photographs and surface models of Clevosaurus hudsoni specimen NHMUK PV R36832. Left scapulocoracoid in (A, B) lateral and (C) medial views. Left radius in (D) dorsolateral, (E) anterior and (F) posterior views.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.