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73 results for “diffusion weighted images”
ASPIDE: SERMAS diffusion-weighted image processing use-case
<p>This repository contains the outputs of the diffusion-weighted image processing use-case of the ASPIDE project for a single subject. The input files were obtained from the Human Connectome Project (HCP) database. HCP is an open project and the full unprocessed dataset can be obtained from <a href="https://db.humanconnectome.org/app/template/Login.vm">https://db.humanconnectome.org/app/template/Login.vm</a>.</p>
k-space dataset for Robust multishot diffusion-weighted imaging of the abdomen with region-based shot rejection
<p>k-space dataset for https://onlinelibrary.wiley.com/doi/epdf/10.1002/mrm.30102</p>
Utility of standard diffusion-weighted magnetic resonance imaging for the identification of ischemic optic neuropathy in giant cell arteritis
<p><span>Purpose: To assess diffusion abnormalities of the optic nerve (ON) in giant cell arteritis (GCA) patients with acute onset of visual impairment (VI) using diffusion-weighted magnetic resonance imaging (DWI).</span></p> <p><span>Methods: DWI scans of GCA patients with acute VI were evaluated in a case-control study. Two blinded neuroradiologists assessed randomized DWI scans of GCA and controls for ON restricted diffusion. Statistical quality criteria and inter-rater reliability (IRR) were calculated. DWI findings were compared to ophthalmological assessments.</span></p> <p><span>Results: 35 GCA patients (76.2 ± 6.4 years; 37 scans) and 35 controls (75.7±7.6 years; 38 scans) were included. ON restricted diffusion was detected in 81.1% (Reader 1) of GCA scans. Localization of ON restricted diffusion was at the optic nerve head in 80.6%, intraorbital in 11.1% and affecting both segments in 8.3%. DWI discerned affected from unaffected ON with a sensitivity, specificity, positive and negative predictive value of 87%/99%/96%/96%. IRR for ON restricted diffusion was κ<sub>inter </sub>= 0.72 (95% CI 0.59‑0.86). DWI findings challenged ophthalmologic diagnoses in 4 cases (11.4%).</span></p> <p><span>Conclusions: DWI visualizes anterior and posterior ON ischemia in GCA patients with high sensitivity and specificity, as well as substantial inter-rater reliability. DWI may complement the ophthalmological assessment in patients with acute VI.</span></p>
Diffusion Weighted Magnetic Resonance Imaging in Chronic Kidney Disease
ClinicalTrials.gov study NCT03174899. IPD Sharing: Not stated. Countries: 0. Publications: 2.
B-mode Ultrasound, Sono-Elastography, and Diffusion-weighted Imaging MRI in Thyroid Nodules
ClinicalTrials.gov study NCT06029946. IPD Sharing: Not stated. Countries: 0. Publications: 10.
" Role of Diffusion Weighted Image in the Diagnosis and Follow up of Breast Cancer"
ClinicalTrials.gov study NCT06494865. IPD Sharing: UNDECIDED. Countries: 0. Publications: 4.
Optimized Diffusion-Weighted Imaging for the Evaluation of Post-Treatment Squamous Cell Carcinoma in the Neck: Comparative Study With FDG PET/CT
ClinicalTrials.gov study NCT04685798. IPD Sharing: NO. Countries: 1. Publications: 0.
Utility of Diffusion-weighted MR Imaging
ClinicalTrials.gov study NCT03078868. IPD Sharing: NO. Countries: 1. Publications: 0.
Utility of standard diffusion-weighted magnetic resonance imaging for the identification of ischemic optic neuropathy in giant cell arteritis
Open the record for dataset details and reuse information.
Reversible Diffusion Weighted Imaging Lesion in Acute Ischemic Stroke – A Systematic Review
Open the record for dataset details and reuse information.
The role of intravoxel incoherent motion (IVIM) parameters in characterization of hypovascular liver lesions: the raw diffusion weighted images and IVIM data
<p class="western"><b>Background: </b><span>The utility of </span>intravoxel incoherent motion (IVIM) related parameters <span>in differentiation of hypovascular liver lesions is still unknown.</span></p> <p class="western"><b>Purpose: </b>The purpose of this study was to evaluate<b> </b>the value of IVIM related parameters in comparison to apparent diffusion coefficient (ADC) for differentiation among intrahepatic mass-forming cholangiocarcinoma (IMC), hypovascular liver metastases (HLM) and primary hepatic lymphoma (PHL).</p> <p class="western"><b>Methods:</b> Seventy-seven prospectively enrolled patients (21 IMC, 53 HLM, and 3 PHL) underwent 1,5T magnetic resonance examination with IVIM diffusion-weighted imaging using seven <i>b</i> values (0-800 s/mm<sup>2</sup>). Two independent readers performed quantitative analysis of IVIM-related parameters and ADC. Interobserver agreement was tested using a Pearson/Spearman-correlation. </p> <p class="western"><b>Results</b>: ADC, true diffusion coefficient (<i>D</i>), perfusion-related diffusion coefficient (<i>D</i>*), and perfusion fraction (ƒ) were compared among the lesions using Kruskal-Wallis H test. The diagnostic accuracy of each parameter was assessed by receiver operating curve (ROC) analysis. ADC, and <i>D</i> were significantly different among IMC and HLM with higher diagnostic performance of <i>D</i> (AUC=0.879 vs 0.821). Patients with PHL had significantly lower ADC, <i>D</i> and ƒ compared with IMC (<i>p</i><0.001, <i>p</i><0.001, and <i>p</i>=0.041, respectively) with highest diagnostic accuracy of <i>D</i> (AUC=0.905). <i>D</i> and ƒ were lower in PHL in comparison to HLM (<i>p</i>=0.031, and <i>p</i>=0.01). Good interobserver agreement was found among two readers (<i>r</i>=0.811 for ADC, 0.902 for <i>D</i>, 0.899 for <i>D</i>*, and 0.911 for ƒ maps).</p> <p class="western"><b>Conclusion</b>: IVIM-derived parameters in particular <i>D</i>, in addition to ADC, could help in differentiation among most common hypovascular malignant liver lesions. Moreover, they can be used for characterization of rare hypovascular entities such as primary hepatic lymphoma.</p>
Diffusion Weighted Magnetic Resonance Imaging for Preoperative Staging in Gastric Adenocarcinoma Patients
ClinicalTrials.gov study NCT01794026. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Role of 3 Tesla Diffusion Weighted Magnetic Resonance Imaging (DW-MRI) for Diagnosis Bladder Cancer Grade and Stage
ClinicalTrials.gov study NCT03138837. IPD Sharing: YES. Countries: 1. Publications: 0.
Non-invasive Diffusion-weighted Imaging With MRCP in the Diagnosis of Neoplastic Biliary Obstruction
ClinicalTrials.gov study NCT07108725. IPD Sharing: YES. Countries: 1. Publications: 0.
An Investigational Scan (Intravoxel Incoherent Motion Diffusion Weighted Imaging) for the Evaluation of Colorectal Cancer Liver Metastases Treatment Response
ClinicalTrials.gov study NCT04796818. IPD Sharing: Not stated. Countries: 1. Publications: 0.
DWI Breast MRI in Dense Breast: A Clinical Trial to Assess the Efficacy and Diagnostic Accuracy of Diffusion Weighted Imaging in Dense Breast Tissue
ClinicalTrials.gov study NCT06836089. IPD Sharing: NO. Countries: 1. Publications: 0.
Detection of Acid Sphingomyelinase/Ceramide Pathway Activation in Radiotherapy Patients Using Intravoxel Incoherent Motion (IVIM) Diffusion-weighted Magnetic Resonance Imaging and Serum Biomarkers
ClinicalTrials.gov study NCT02465723. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Diffusion-Weighted Magnetic Resonance Imaging
ClinicalTrials.gov study NCT02242786. IPD Sharing: Not stated. Countries: 1. Publications: 0.
MRI (Including Spectroscopy and Fat-Saturations and Diffusion-Weighted Imaging) in Cervical Cancer
ClinicalTrials.gov study NCT01060033. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Examination of the Effectiveness of Diffusion Weighted Magnetic Resonance Imaging for Identifying Poor Prognosis in Patients With Rheumatoid Arthritis
ClinicalTrials.gov study NCT01482507. IPD Sharing: Not stated. Countries: 1. Publications: 0.
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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.