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3,036 results for “ct”
Learn2Reg Challenge: CT Lung Registration - Training Data
<p>For more information about this dataset go to: https://learn2reg.grand-challenge.org/</p>
Learn2Reg Challenge: CT Lung Registration - Test Data
<p>For more information about this dataset go to: https://learn2reg.grand-challenge.org/</p>
Dataset related to article "A reference framework for standardization and harmonization of CT Radiomics features: the "CadAIver" analysis"
<p><strong>Abstract</strong></p><p> </p><p><strong>Background</strong></p><p> </p><p>In recent years, Radiomics features (RFs) have been developed to provide quantitative, standardized information about shape, density/intensity and texture patterns on radiological images. Several studies showed limitations in the reproducibility of RFs in different acquisition settings. To date, reproducibility studies using CT images mainly rely on phantoms, due to the harness of patient exposure to X-rays. In this study we analyze the effects of CT acquisition parameters on RFs of lumbar vertebrae in a cadaveric donor.</p><p> </p><p><strong>Methods</strong></p><p> </p><p>112 unique CT acquisitions from cadaveric truck were performed on 3 different CT scanners varying KV, mA, field of view and reconstruction kernel settings. Lumbar vertebrae were segmented through a deep learning convolutional neural network and RFs were computed. The effects of each protocol on each RFs were assessed by univariate and multivariate Generalized Linear Model. Further, we compared the GLM model to the ComBat algorithm in the efficiency in harmonizing CT images.</p><p> </p><p><strong>Findings</strong></p><p> </p><p>From GLM, mA variation was not associated with alteration of RFs , whereas kV modification was associated with exponential variation of several RFs, including First Order (94.4%), GLCM (87.5%) and NGTDM (100%).</p><p>Upon cross-validation, ComBat algorithm obtained a mean R2 higher than 0.90 in 1 RFs (0.90%), whereas GLM model obtained high R2 in 21 RFs (19.6%), showing that the proposed GLM could effectively harmonize acquisitions better than ComBat.</p><p> </p><p> </p><p><strong>Interpretation</strong></p><p> </p><p>This study represents the first attempt in describing the effects of CT acquisition parameters in bone RFs in a cadaveric donor. Our analyses showed that RFs could be substantially different according to the variation of each acquisition parameter and in dataset obtained from different CT scanners. These differences can be minimized using the proposed GLM model. Publicly available dataset and GLM could foster the research of Radiomics-based studies by increasing harmonization across CT protocols and vendors.</p>
Figure 4 from: Tran TT, Do QH, Pham CT, Phan TQ, Ngo HT, Le MD, Ziegler T, Nguyen TQ (2024) A new species of the Cyrtodactylus chauquangensis species group (Squamata, Gekkonidae) from Lao Cai Province, Vietnam. ZooKeys 1192: 83-102. https://doi.org/10.3897/zookeys.1192.117135
Figure 4 Male holotype of Cyrtodactylus luci sp. nov. (IEBR R.5237) in life. Photo: T.Q. Phan.
Figure 1 from: Tran TT, Do QH, Pham CT, Phan TQ, Ngo HT, Le MD, Ziegler T, Nguyen TQ (2024) A new species of the Cyrtodactylus chauquangensis species group (Squamata, Gekkonidae) from Lao Cai Province, Vietnam. ZooKeys 1192: 83-102. https://doi.org/10.3897/zookeys.1192.117135
Figure 1 Type locality of Cyrtodactylus luci sp. nov. in Lao Cai Province (red circle), Vietnam.
Figure 5 from: Tran TT, Do QH, Pham CT, Phan TQ, Ngo HT, Le MD, Ziegler T, Nguyen TQ (2024) A new species of the Cyrtodactylus chauquangensis species group (Squamata, Gekkonidae) from Lao Cai Province, Vietnam. ZooKeys 1192: 83-102. https://doi.org/10.3897/zookeys.1192.117135
Figure 5 Female paratype of Cyrtodactylus luci sp. nov. (IEBR R.5241) in life. Photo: T.Q. Phan.
GeCKO_NPC_mito - GFP_FNZ_CT + MITO_1_2
<p>Cas9-NPCs cells were generated via lentivirus-mediated transduction of the Cas9 gene, followed by selection with 10 µg/ml blasticidin. Cas9-NPCs were further transduced with lentivirus particles containing a human sgRNA library at a MOI of 0.3 to achieve no greater than 1 sgRNA per cell, followed by selection with both 1 ug/ml puromycin and 10 μg/ml blasticidin for more than 9 days. After, 5 × 10<sup>6</sup> cells were collected for determining initial sgRNA abundance. Infected cells, expanded to 5 × 10<sup>7</sup> cells, were treated with FNZ for 3 days, followed by FACS sorting of GFP-positive cells. Genomic DNA was isolated from all samples, and the sgRNA sequences were amplified by PCR and sequenced on a HiSeq 2500.</p>
CT-Audiolink : Auralisations of cultural heritage buildings of Thrace - http://ct-audiolink.gr
<p>The auralizations were created using pseudoanechoic recordings of speech and music combined with measured binaural impulse responses of various cultural heritage buildings in the region of Thrace.</p>
Figure 5 from: Schmitt M, Uhl G (2017) Oulema septentrionis and O. erichsonii are neither conspecific nor melanic variants of O. melanopus as assessed by micro CT analysis of their lectotypes (Insecta, Coleoptera, Chrysomelidae, Criocerinae). In: Chaboo CS, Schmitt M (Eds) Research on Chrysomelidae 7. ZooKeys 720: 121-130. https://doi.org/10.3897/zookeys.720.19760
Figure 5 - Flagella of a Oulema duftschmidi b O. melanopus, photos taken at the same magnification.
Dataset related to article: ENHANCING SOFT TISSUE DIFFERENTIATION WITH DIFFERENT DUAL-ENERGY CT SYSTEMS: A PHANTOM STUDY
<p><strong><span>The database includes the mean and standard deviation values of the CT numbers extracted from each slice and acquisition, after being reconstructed with the FBP and the iterative algorithms, for all tissue-equivalent inserts and all energy levels of the DECT, as well as for the SECT.</span></strong></p>
Figure 1 from: Staab M, Hita Garcia F, Liu C, Xu Z-H, Economo EP (2018) Systematics of the ant genus Proceratium Roger (Hymenoptera, Formicidae, Proceratiinae) in China – with descriptions of three new species based on micro-CT enhanced next-generation-morphology. ZooKeys 770: 137-192. https://doi.org/10.3897/zookeys.770.24908
Figure 1 Petiole in profile view. A P. japonicum (CASENT0790834) B P. itoi (OKENT0016142).
Figure 5 from: Staab M, Hita Garcia F, Liu C, Xu Z-H, Economo EP (2018) Systematics of the ant genus Proceratium Roger (Hymenoptera, Formicidae, Proceratiinae) in China – with descriptions of three new species based on micro-CT enhanced next-generation-morphology. ZooKeys 770: 137-192. https://doi.org/10.3897/zookeys.770.24908
Figure 5 Propodeum and petiole in profile. A P. itoi (OKENT0016142) B P. kepingmai (CASENT0790031).
Figure 5 from: Hornung-Leoni CT, Chavarria-Olmedo YJ, Ramírez-Morillo IM (2019) The Reserva de la Biosfera Barranca de Metztitlán (Hidalgo): An illustrated checklist of bromeliads and orchids and their high levels of Mexican endemisms. PhytoKeys 118: 105-123. https://doi.org/10.3897/phytokeys.118.31603
Figure 5 Habits in species present in RBBM
Figure 14 from: Jochum A, Prieto CE, Kampschulte M, Martels G, Ruthensteiner B, Vrabec M, Dörge DD, de Winter AJ (2019) Re-evaluation of Zospeum schaufussi von Frauenfeld, 1862 and Z. suarezi Gittenberger, 1980, including the description of two new Iberian species using Computer Tomography (CT) (Eupulmonata, Ellobioidea, Carychiidae). ZooKeys 835: 65-86. https://doi.org/10.3897/zookeys.835.33231
Figure 14 CT scans of Zospeumgittenbergeri sp. n. holotype (RMNH.MOL.234166). Scale bar: 500 µm.
Figure 5 from: McDonnell AJ, Wetreich HB, Cantley JT, Jobson P, Martine CT (2019) Solanum plastisexum, an enigmatic new bush tomato from the Australian Monsoon Tropics exhibiting breeding system fluidity. PhytoKeys 124: 39-55. https://doi.org/10.3897/phytokeys.124.33526
Figure 5 Scan of holotype of Solanumplastisexum, held at DNA.
Figure 6 from: McDonnell AJ, Wetreich HB, Cantley JT, Jobson P, Martine CT (2019) Solanum plastisexum, an enigmatic new bush tomato from the Australian Monsoon Tropics exhibiting breeding system fluidity. PhytoKeys 124: 39-55. https://doi.org/10.3897/phytokeys.124.33526
Figure 6 Typical habitat of Solanumplastisexum, taken from the Buchanan Highway.
Figure 2 from: Janssen HY, Pham CT, Ngo HT, Le MD, Nguyen TQ, Ziegler T (2019) A new species of Lycodon Boie, 1826 (Serpentes, Colubridae) from northern Vietnam. ZooKeys 875: 1-29. https://doi.org/10.3897/zookeys.875.35933
Figure 2 Holotype of Lycodon pictus sp. nov. (IEBR 4166) in life. Photograph T. Lehmann.
Figure 7 from: Janssen HY, Pham CT, Ngo HT, Le MD, Nguyen TQ, Ziegler T (2019) A new species of Lycodon Boie, 1826 (Serpentes, Colubridae) from northern Vietnam. ZooKeys 875: 1-29. https://doi.org/10.3897/zookeys.875.35933
Figure 7 Map showing the type locality of Lycodon pictus sp. nov. in Cao Bang Province.
Figure 4 from: Janssen HY, Pham CT, Ngo HT, Le MD, Nguyen TQ, Ziegler T (2019) A new species of Lycodon Boie, 1826 (Serpentes, Colubridae) from northern Vietnam. ZooKeys 875: 1-29. https://doi.org/10.3897/zookeys.875.35933
Figure 4 Female paratype of Lycodon pictus sp. nov. (ZFMK 93746) in life. Photographs T.Q. Nguyen.
Data and Codes for: Segmentation uncertainty of vegetated porous media propagates during X-ray CT image-based analysis
<p>Phase segmentation is a crucial step in X-ray computed tomography (CT) for image-based analysis (CT-IBA) to derive soil and root information. How segmentation uncertainty (SU) affects CT-IBA of vegetated soil has never been explored. The enclosed data and codes are used to assist the analysis of SU quantification and propagation in the journal paper published in Plant & Soil. The title of the paper is Segmentation uncertainty of vegetated porous media propagates during X-ray CT image-based analysis. </p>
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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)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
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.