Search results for "volumetry"

showing 5 items of 5 documents

Impairment of Everyday Spatial Navigation Abilities in Mild Cognitive Impairment Is Weakly Associated with Reduced Grey Matter Volume in the Medial P…

2020

Alzheimer’s Disease Neuroimaging Initiative.

0301 basic medicineMalephysiopathology [Cognitive Dysfunction]positron emission tomographypathology [Cognitive Dysfunction]diagnostic imaging [Cognitive Dysfunction]grid cellsAudiologySpatial memoryVolumetry0302 clinical medicinepathology [Gray Matter]Activities of Daily Livingmagnetic resonance imagingEntorhinal CortexGray MatterAged 80 and overGeneral NeuroscienceGgrid cellsCognitionGeneral MedicineHuman brainOrgan SizeMiddle AgedMagnetic Resonance ImagingPsychiatry and Mental healthClinical Psychologymedicine.anatomical_structureFemalediagnostic imaging [Entorhinal Cortex]Spatial NavigationPositron emission tomographymedicine.medical_specialtyphysiology [Spatial Navigation]spatial navigationGrey matter03 medical and health sciencesAtrophymild cognitive impairmentNeuroimagingFluorodeoxyglucose F18medicineHumansCognitive Dysfunctionddc:610Entorhinal cortexAgedvolumetrybusiness.industrydiagnostic imaging [Gray Matter]Mild cognitive impairmentpathology [Entorhinal Cortex]Entorhinal cortexmedicine.disease030104 developmental biologyPositron-Emission TomographyBrodmann area 34Geriatrics and Gerontology18F-fluorodeoxyglucoseAtrophyRadiopharmaceuticalsbusiness030217 neurology & neurosurgeryJournal of Alzheimer's disease : JAD
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SPLIT-LUNG VOLUMETRY IN PATIENTS AFTER SINGLE-LUNG TRANSPLANTATION USING 3HELIUM-MRI 

2000

medicine.medical_specialtyAnesthesiology and Pain Medicinebusiness.industryLung volumetrymedicineIn patientRadiologySingle Lung TransplantationbusinessAnesthesiology
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The EADC-ADNI Harmonized Protocol for manual hippocampal segmentation on magnetic resonance : Evidence of validity

2014

BackgroundAn international Delphi panel has defined a harmonized protocol (HarP) for the manual segmentation of the hippocampus on MR. The aim of this study is to study the concurrent validity of the HarP toward local protocols, and its major sources of variance.MethodsFourteen tracers segmented 10 Alzheimer's Disease Neuroimaging Initiative (ADNI) cases scanned at 1.5 T and 3T following local protocols, qualified for segmentation based on the HarP through a standard web-platform and resegmented following the HarP. The five most accurate tracers followed the HarP to segment 15 ADNI cases acquired at three time points on both 1.5 T and 3T.ResultsThe agreement among tracers was relatively low…

MalePathologyDiagnostic criteriaEpidemiologyImage Processinggenetics [Alzheimer Disease]HippocampusFunctional LateralityImagingpathology [Alzheimer Disease]ddc:616.89methods [Magnetic Resonance Imaging]Computer-AssistedClinical trialsddc:150methods [Image Processing Computer-Assisted]ValidationImage Processing Computer-AssistedSegmentationHARPmedicine.diagnostic_testHealth PolicyOrgan SizeAlzheimer's diseaseMiddle Agedinstrumentation [Magnetic Resonance Imaging]Manual segmentationMagnetic Resonance ImagingPsychiatry and Mental healthMagnetic resonanceBiomedical ImagingManual segmentationFemalemethods [Neuroimaging]methods [Imaging Three-Dimensional]EADC-ADNI Working Group on The Harmonized Protocol for Manual Hippocampal Volumetry and for the Alzheimer's Disease Neuroimaging Initiativemedicine.medical_specialtyHippocampal volumetry; Magnetic resonance; Alzheimer's disease; Biomarkers; Diagnostic criteria; Enrichment; Clinical trials; Validation; Harmonized protocol; Standard operating procedures; Manual segmentationConcurrent validityClinical SciencesHarmonized protocolNeuroimagingArticleHippocampal volumetryCellular and Molecular NeuroscienceImaging Three-DimensionalDevelopmental NeuroscienceNeuroimagingClinical ResearchAlzheimer DiseasemedicineHumansddc:610AgedProtocol (science)ReproducibilityInternetbusiness.industryNeurosciencesReproducibility of ResultsMagnetic resonance imagingBrain DisordersStandard operating procedurespathology [Hippocampus]EnrichmentGeriatricsThree-DimensionalNeurology (clinical)Geriatrics and GerontologyAtrophyNuclear medicinebusinessBiomarkers
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Hippocampal subfields predict positive symptoms in schizophrenia : First evidence from brain morphometry

2012

Alterations of hippocampal anatomy have been reported consistently in schizophrenia. Within the present study, we used FreeSurfer to determine hippocampal subfield volumes in 21 schizophrenic patients. A negative correlation between PANSS-positive symptom score and bilateral hippocampal subfield CA2/3 as well as CA1 volume was found on high-resolution magnetic resonance images. Our observation opens the gate for advanced investigation of the commonly reported hippocampal abnormalities in schizophrenia in terms of specific subfields.

AdultMalegenetic structureshippocampusFreeSurferHippocampusHippocampal formationCA1Cellular and Molecular NeurosciencemedicineImage Processing Computer-AssistedHumansddc:610Biological PsychiatryvolumetryPsychiatric Status Rating Scalesmedicine.diagnostic_testBrain morphometryMagnetic resonance imagingOrgan Sizemedicine.diseaseMagnetic Resonance ImagingJschizophreniaPsychiatry and Mental healthnervous systemCA2/3SchizophreniaPsychiatric status rating scalesOriginal ArticleFemaleNegative correlationPsychologyNeuroscienceSymptom score
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Workflow-centred open-source fully automated lung volumetry in chest CT

2019

Aim To develop a robust open-source method for fully automated extraction of total lung capacity (TLC) from computed tomography (CT) images and to demonstrate its integration into the clinical workflow. Materials and methods Using only open-source software, an algorithm was developed based on a region-growing method that does not require manual interaction. Lung volumes calculated from reconstructions with different kernels (TLCCT) were assessed. To validate the algorithm calculations, the results were correlated to TLC measured by pulmonary function testing (TLCPFT) in a subgroup of patients for which this information was available within 3 days of the CT examination. Results A total of 28…

MaleChest ct030218 nuclear medicine & medical imagingPulmonary function testing03 medical and health sciencesImaging Three-Dimensional0302 clinical medicineHumansMedicineRadiology Nuclear Medicine and imagingSegmentationLung volumesRetrospective Studiesbusiness.industryGeneral MedicineMiddle Agedrespiratory systemRespiratory Function Testsrespiratory tract diseasesWorkflowOpen sourceFully automated030220 oncology & carcinogenesisLung volumetryRadiographic Image Interpretation Computer-AssistedFemaleRadiography ThoracicLung Volume MeasurementsTomography X-Ray ComputedNuclear medicinebusinessAlgorithmsSoftwareClinical Radiology
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