Diffusion tensor MR imaging of white matter integrity in HIV-positive patients with planning deficit
| Autor: | Rafael Ferracini Cabral, Paulo Roberto Valle Bahia, Emerson Leandro Gasparetto, Nina Ventura Wilner, Diogo Goulart Corrêa, Nicolle Zimmermann, Rochele Paz Fonseca, Thomas M. Doring, Sarah C.B. Leite |
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| Rok vydání: | 2015 |
| Předmět: |
Male
Pediatrics medicine.medical_specialty Pathology Neurology Human immunodeficiency virus (HIV) medicine.disease_cause White matter HIV Seropositivity medicine Humans Radiology Nuclear Medicine and imaging Prospective Studies Prospective cohort study Neuroradiology medicine.diagnostic_test business.industry Magnetic resonance imaging Middle Aged White Matter Diffusion Tensor Imaging medicine.anatomical_structure Female Neurology (clinical) Neurosurgery Cognition Disorders Cardiology and Cardiovascular Medicine business Diffusion MRI |
| Zdroj: | Neuroradiology. 57:475-482 |
| ISSN: | 1432-1920 0028-3940 |
| Popis: | The aim of this study was to evaluate whether normal controls and human immunodeficiency virus (HIV) patients with and without planning deficits differ on white matter integrity.A total of 34 HIV-positive patients with planning deficits were compared with 13 HIV-positive patients without planning deficits and 19 gender-, age-, and education-matched control subjects. Diffusion tensor imaging (DTI) was performed along 30 noncolinear directions in a 1.5-T scanner. For tract-based spatial statistics analysis, a white matter skeleton was created, and a permutation-based inference with 5000 permutations with a threshold of p 0.05 was used to identify abnormalities in fractional anisotropy (FA). The median, radial, and axial diffusivities were also projected onto the mean FA skeleton.Compared with controls, HIV-positive patients with planning deficits had decreased FA in bilateral anterior thalamic radiations, bilateral inferior fronto-occiptal fasciculi, genu and splenium of the corpus callosum, bilateral superior longitudinal fascicule, and bilateral uncinate fasciculi. Compared to HIV-positive patients without planning deficits, patients with planning deficits had decreased FA in bilateral anterior thalamic radiations, bilateral inferior fronto-occiptal fasciculi, genu of the corpus callosum, bilateral superior longitudinal fascicule, and right uncinate fascicule.DTI can detect extensive white matter abnormalities in the normal-appearing white matter of HIV-positive patients with planning deficits compared with controls and HIV-positive patients without planning deficits. |
| Databáze: | OpenAIRE |
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