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Dataset results
444 results for “CT scan”
Stone Pipe (2020a8737) (CT scan)
**Stone pipe** Location: Coweeta Creek site (31Ma34), Macon County, North Carolina. Period: Mississippian, Qualla phase (AD 1400-1700). Material: soapstone. Dimensions: length, 145.0 mm; width, 62.0 mm; thickness, 55.0 mm. Notes: Catalog no. 2020a8737. This artifact model was created by Abigail Gancz and is derived from a computerized tomography (CT) scan of the object performed at UNC Hospitals in 2014. The model's texture is derived from digital photographs of the object taken in 1994 and only approximates the object's actual texture. Source: Objaverse 1.0 / Sketchfab
Olivella Shell Beads (2020a8720) (CT Scan)
**Olivella shell beads** Location: Coweeta Creek site (31Ma34), Macon County, North Carolina. Period: Mississippian, Qualla phase (AD 1400-1700). Material: marine shell. Dimensions: none. Notes: Catalog no. 2020a8720. These artifacts were repatriated to the Eastern Band of Cherokee Indians in 2014. The model was created by Abigail Gancz and is derived from a computerized tomography (CT) scan of the objects performed at UNC Hospitals prior to repatriation. The model's texture is derived from digital photographs of the objects taken in 1994 and only approximates the objects' actual texture. Source: Objaverse 1.0 / Sketchfab
Shell Gorget (2020a8728) (CT scan)
**Shell gorget** Location: Coweeta Creek site (31Ma34), Macon County, North Carolina. Period: Mississippian, Qualla phase (AD 1400-1700). Material: marine shell. Dimensions: length, 127.8 mm; width, 98.4 mm; thickness, 26 mm. Notes: Catalog no. 2020a8728. This artifact model was created by Abigail Gancz and is derived from a computerized tomography (CT) scan of the object performed at UNC Hospitals in 2014. The model's texture is derived from digital photographs of the object taken in 1994 and only approximates the object's actual texture. Source: Objaverse 1.0 / Sketchfab
3D Mapping from micro-CT scans of Equisetum arvense Rhizome
<p>These two animation (rotating 360 degrees) show <strong>1)</strong> a full 10cm x 5cm core of <em>E. arvense</em> L., and <strong>2)</strong> a section of nodal root whorls with good-quality mapping of parent roots, but no lateral root detail. These images were mapped by Conor Haynes-Mannering from micro-CT scans taken in the Hounsfield Lab (Sutton Bonnington campus, UK), supervised by Craig Sturrock and Brian Atkinson.</p>
FIGURE 9 in Synchrotron micro-CT scanning leads to the discovery of a new genus of morphologically conserved echinoid (Echinodermata: Cassiduloida)
FIGURE 9. Kassandrina malayana comb. nov. (Mortensen, 1948b) (ZMUC 236 [S]), SEM images: (A–D) valves and (E) stem of ophicephalous pedicellariae, and (F) spine from bourrelet. Scale bars: A–D, 50 µm; E–F, 100 µm.
FIGURE 8 in Synchrotron micro-CT scanning leads to the discovery of a new genus of morphologically conserved echinoid (Echinodermata: Cassiduloida)
FIGURE 8. Kassandrina malayana comb. nov. (Mortensen, 1948b) (ZMUC 236 [sytype]): (A–C, F) SRµCT-based volume renderings and (D–E, G–I) drawings showing (A) apical disc, (B) oral view of test, (C) internal view of petal III (light-colored pores in the middle are not open on the outside of the test), (D) plates beyond ambulacrum I, (E) periproct (external view; solid white region indicates anal opening), (F) internal view of peristome and phyllodes, and (G–I) internal views of the phyllodes V, II and III, respectively. Scale bars: A, C–I, 1 mm; B, 5 mm.
FIGURE 1 in Synchrotron micro-CT scanning leads to the discovery of a new genus of morphologically conserved echinoid (Echinodermata: Cassiduloida)
FIGURE 1. Cassidulus briareus sp. nov. (MP 1267 MNHWU): test of holotype in (A) aboral and (B) oral view, and (C) detail of peristome and phyllodes; and test of paratype in (D) aboral and (E) posterior view. Scale bars: A–E, 5 mm.
FIGURE 4. Cassidulus caribaearum Lamarck, 1801 in Synchrotron micro-CT scanning leads to the discovery of a new genus of morphologically conserved echinoid (Echinodermata: Cassiduloida)
FIGURE 4. Cassidulus caribaearum Lamarck, 1801 (CASIZ 222205 [neotype] [A–E]; CASIZ 112683B [F–G, I–J]; CASIZ 112683A [H]): photos of test in (A) aboral and (B) oral view, (C) detail of peristome and phyllodes, and test in (D) side and (E) posterior view; SRµCT-based volume renderings of apical disc in (F) external and (G) internal view (arrows indicate calcareous ridges beneath madreporic plate), (H) of peristome in internal view, and of periproct in (I) internal and (J) external view. Scale bars: A–E, 5 mm; F–J, 1 mm.
FIGURE 3 in Synchrotron micro-CT scanning leads to the discovery of a new genus of morphologically conserved echinoid (Echinodermata: Cassiduloida)
FIGURE 3. Cassidulus caribaearum (?) (MNHN-IE-2013-10590 [syntype?]): photos of (A) internal and (B) external view of oral region of carapace; (C) part of the aboral region of carapace showing petal II or V (according to the position of smaller column of pore-pairs); (D) detail of phyllode I, arrows indicate sphaeridiae in enclosed pits; and drawings of internal view of phyllodes (E) V and (F) III, and (G) petal depicted in (C). Scale bars: A–C, 5 mm; D, 2 mm.
FIGURE 2 in Synchrotron micro-CT scanning leads to the discovery of a new genus of morphologically conserved echinoid (Echinodermata: Cassiduloida)
FIGURE 2. Cassidulus briareus sp. nov. (MP 1267 MNHWU; all from holotype except B, F–H): (A–D, G–H) SRµCT-based volume renderings and (E–F, I–L) drawings showing (A) apical disc, (B–D) internal view of petals I–III, respectively, (E) plates beyond ambulacrum V, (F) periproct (internal view; solid white region indicates anal opening), (G) internal view of peristome and phyllodes, (H) longitudinal section of phyllode III (arrows indicate sphaeridia), and (I–L) internal views of the phyllodes V, II–IV, respectively. Scale bars: A–L, 1 mm.
FIGURE 10 in Synchrotron micro-CT scanning leads to the discovery of a new genus of morphologically conserved echinoid (Echinodermata: Cassiduloida)
FIGURE 10. SRµCT-based volume renderings of bourrelets from (A–B) Cassidulus briareus sp. nov. (MP 1267 MNHWU [paratype]) and (C–F) Kassandrina malayana comb. nov. (Mortensen, 1948b) (ZMUC 236 [syntype]): (A, C) oral view of test showing the peristome and part of the phyllodes I, III–V; dotted lines indicate region depicted in (B) and (D), i.e., cross section (x – x' axis) of bourrelet 5 on the left, and of phyllode III on the right (the inside of the test is towards the top of the page); (E) frontal cross section (y – y' axis) of test showing depression on bourrelets 2 and 3; and (F) internal view of test showing phyllodes I and V, and basicoronal 5 between them. AMB, ambulacrum; INT, interambulacrum. Scale bars: A–F, 1 mm.
FIGURE 7 in Synchrotron micro-CT scanning leads to the discovery of a new genus of morphologically conserved echinoid (Echinodermata: Cassiduloida)
FIGURE 7. Kassandrina malayana comb. nov. (Mortensen, 1948b) (ZMUC 236 [syntype]): photos of test in (A) aboral and (B) oral view, (C) detail of peristome and phyllodes, and test in (D) side and (E) posterior view. Kassandrina florescens comb. nov. (CASIZ 71853): test in (F) aboral and (G) oral view, and (H) detail of peristome and phyllodes. Scale bars: A–B, D–G, 10 mm; C, H, 5 mm.
FIGURE 5. Cassidulus caribaearum Lamarck, 1801 in Synchrotron micro-CT scanning leads to the discovery of a new genus of morphologically conserved echinoid (Echinodermata: Cassiduloida)
FIGURE 5. Cassidulus caribaearum Lamarck, 1801 (CASIZ 222205 [neotype] [A–D, I–L]; CASIZ 112638 [E–G, M]), SEM images: (A–B) juveniles attached to the test; (C) aboral, (D) bourrelet, (E) oral and (F) miliary spines; stalk of (G) large tridentate pedicellariae (detail of projections in H), (I) small tridentate pedicellariae (detail of stereom in J), and of (K) ophicephalous pedicellariae; (L) sphaeridium; and (M) young spine. Scale bars: A–B, M, 100 µm; C–I, 200 µm; K–L, 50 µm.
FIGURE 6. Cassidulus caribaearum Lamarck, 1801 in Synchrotron micro-CT scanning leads to the discovery of a new genus of morphologically conserved echinoid (Echinodermata: Cassiduloida)
FIGURE 6. Cassidulus caribaearum Lamarck, 1801 (CASIZ 222205 [neotype] [B–E, J–L]; CASIZ 112638 [A, F–I]), SEM images: valves of (A–B) triphyllous pedicellariae, (C–D) ophicephalous pedicellariae, (E–G) large tridentate pedicellariae ([H] detail of valve head), and (I–K) small tridentate pedicellariae ([L] detail of valve head). Scale bars: A–B, 15 µm; C–D, H, L, 30 µm; E–G, I–K, 100 µm.
Outpatient CT scan scheduling data
<p>Outpatient Scheduling Data for Computed Tomography (CT) obtained from the consultation scheduling management system of the Radiology Department of Hospital de Clinicas de Porto Alegre (HCPA), a public, 850-bed, tertiary care teaching hospital in southern Brazil. Data collected cover 8,382 appointments made for this type of radiological exam performed in the year 2017.</p>
Fig. 6. 3D in An XXL-CT-scan of an XXL Tyrannosaurus rex skull
Fig. 6. 3D-rendering of the CT dataset with crate sideways removed (left). Cutting through the crate in lateral directions reveals the bone structures inside the sandstone matrix (right).
Figure 6 in An XXL-CT-scan of an XXL Tyrannosaurus rex skull
Figure 6 (left) shows a 3D-rendering of the same dataset. To distinguish the different materials a false-color representation based on the different absorption values of the materials were used. The virtually removed sideways uncovers the wrapping around the skull and sandstone block as well as the additional wooden supporting structures. Figure 6 (right) cuts through the crate in lateral direction and shows the interior of the skull and sandstone block. The white colored structure marks the bone fragments. The next step was to virtually excavate the skull. The good material contrast made it possible to mask out the bulk of the sandstone matrix and the supporting structures by setting appropriate thresholds. High absorption parts like the screws as well as noise particles had to be removed manually. The result of this segmentation can be seen in figure 7. At this stage the segmented skull is still represented by three dimensional pixels (Voxels) with a specific absorption value. To allow for further processing in CAD software e.g. for 3D-printing preparation the segmented skull was converted to a triangular surface mesh in the stl Format.
Fig. 5 in An XXL-CT-scan of an XXL Tyrannosaurus rex skull
Fig. 5. CT slice through the skull. The skull bones clearly stand out from the sandstone matrix and the supporting structures.
Fig. 4 in An XXL-CT-scan of an XXL Tyrannosaurus rex skull
Fig. 4. Top view of crate with skull included when scanning in natural orientation (left) and upright orientation (right). The arrow marks the estimated maximum penetration length for both setups.
Micro-CT scans of unloaded and loaded glenoid bone used for DVC
<p>Micro-CT (mCT) scans to estimate glenoid bone strain with Digital Volume Correlation (DVC). There are 8 mCT sets of the same sample. Sets mCT1 to mCT6 are unloaded glenoid for error estimation. Sets mCT7 and mCT8 are used for strain measurement: set mCT7 is unloaded and set mCT8 corresponds to 1500 N axial loading. Scans were performed consecutively pairwise: after each scan pair, the specimen was removed from the micro-CT and repositioned. Rigid registration of the fixed side and bone masking have been performed. Scans format is MHD.</p>
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