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Fractional anisotropy (FA)

Diffusion tensor imaging and tractwise fractional anisotropy statistics: quantitative analysis in white matter pathology

Diffusion tensor imaging and tractwise fractional anisotropy statistics: quantitative analysis in white matter pathology

... tractwise fractional anisotropy statistics (TFAS) is ...on FA maps but on one newly created group averaged DTI data ...one FA map is ...

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Reduced Fractional Anisotropy on Diffusion Tensor Magnetic Resonance Imaging After Hypoxic-Ischemic Encephalopathy

Reduced Fractional Anisotropy on Diffusion Tensor Magnetic Resonance Imaging After Hypoxic-Ischemic Encephalopathy

... parameters FA and RA are only 2 of the func- tions that may be used to describe the diffusion ...aberrant FA values seem to be a sensitive detector of abnormal tissue, especially in WM, one could use the ...

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MR Imaging, MR Spectroscopy, and Diffusion Tensor Imaging of Sequential Studies in Neonates with Encephalopathy

MR Imaging, MR Spectroscopy, and Diffusion Tensor Imaging of Sequential Studies in Neonates with Encephalopathy

... From the DTI data, we computed the average diffusivity Dav, also called apparent diffusion coefficient [ADC], fractional anisotropy FA, and the 3 eigenvalues of the diffusion tensor ␭1, [r] ...

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The Perceived Impact of International Educational Experiences in the United States on Saudi Respiratory Therapists

The Perceived Impact of International Educational Experiences in the United States on Saudi Respiratory Therapists

... approach, Fractional Anisotropy Asymmetry (FAA) was previously able to define whole-brain FA asymmetry (more pronounced for their LTLE group ...

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Diffusion Tensor Imaging in Idiopathic Normal Pressure Hydrocephalus: Evaluation Between Shunt Responsive and Shunt Non-Responsive Groups in Siriraj Hospital

Diffusion Tensor Imaging in Idiopathic Normal Pressure Hydrocephalus: Evaluation Between Shunt Responsive and Shunt Non-Responsive Groups in Siriraj Hospital

... surgery. Fractional anisotropy (FA) and apparent diffusion coefficient (ADC) between 2 groups were assessed by manual region of interest (ROI) method with FA color ...

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Diffusion tensor imaging in elderly patients with idiopathic normal pressure hydrocephalus or Parkinson’s disease: diagnosis of gait abnormalities

Diffusion tensor imaging in elderly patients with idiopathic normal pressure hydrocephalus or Parkinson’s disease: diagnosis of gait abnormalities

... group). Fractional anisotropy (FA) of five brain areas was measured and compared among the three ...and FA of each brain area was ...lower FA for anterior thalamic radiation (ATR) and ...

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Diffusion Tensor Tractography Based Group Mapping of the Pyramidal Tract in Relapsing Remitting Multiple Sclerosis Patients

Diffusion Tensor Tractography Based Group Mapping of the Pyramidal Tract in Relapsing Remitting Multiple Sclerosis Patients

... D iffusion tensor imaging (DTI) is a noninvasive imaging tech- nique capable of characterizing the diffusion properties of water molecules in vivo and detecting microstructural tissue changes not visible on conventional ...

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Can diffusion tensor imaging lesion patterns predict the outcome of ischemic stroke?

Can diffusion tensor imaging lesion patterns predict the outcome of ischemic stroke?

... imaging; FA: Fractional anisotropy; IFOF: Inferior fronto-occipital fasciculus; MRC: Medical Research Council; MRI: Magnetic resonance imaging; NIHSS: National Institute of Health Stroke Scale; ROI: ...

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Principal Component Analysis of Diffusion Tensor Images to Determine White Matter Injury Patterns Underlying Postconcussive Headache

Principal Component Analysis of Diffusion Tensor Images to Determine White Matter Injury Patterns Underlying Postconcussive Headache

... in FA analysis, there are a few limitations of our ...the FA structure, larger sample sizes would allow generation of more refined principal ...the FA maps that can bias the principal components, ...

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Roux-en-Y gastric bypass surgery progressively alters radiologic measures of hypothalamic inflammation in obese patients

Roux-en-Y gastric bypass surgery progressively alters radiologic measures of hypothalamic inflammation in obese patients

... (33). Fractional anisotropy (FA) is a DW MRI metric that reflects the directionality of water movement in a given voxel as a function of 3 orthogonal eigenvalues of the diffusion ...tensor. FA ...

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The role of perfusion and diffusion MRI in the assessment of patients affected by probable idiopathic normal pressure hydrocephalus. A cohort-prospective preliminary study

The role of perfusion and diffusion MRI in the assessment of patients affected by probable idiopathic normal pressure hydrocephalus. A cohort-prospective preliminary study

... ADC: apparent diffusion coefficient; BG: basal ganglia; CSF: cerebral spinal fluid; DTI: diffusion tensor imaging; FA: fractional anisotropy; FLAIR: fluid attenuated inversion recovery[r] ...

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Original Article Whole-brain voxel-based analysis of diffusion tensor imaging and its correlation with visual evoked potential in patients with optic neuritis

Original Article Whole-brain voxel-based analysis of diffusion tensor imaging and its correlation with visual evoked potential in patients with optic neuritis

... the fractional anisotropy (FA) and mean diffusion (MD) values of diffusion tensor imaging (DTI) in the whole-brain voxel-based analysis of optic neuritis (ON) patients and examine their rela- ...

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The relationship between early life stress and microstructural integrity of the corpus callosum in a non-clinical population

The relationship between early life stress and microstructural integrity of the corpus callosum in a non-clinical population

... in fractional anisotropy (FA) within the genu of the corpus callosum among those exposed to the greatest number of early life stressors, suggesting reduced microstructural integrity associated with ...

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Noise reduction of diffusion tensor images by sparse representation and dictionary learning

Noise reduction of diffusion tensor images by sparse representation and dictionary learning

... DTI, fractional anisotropy (FA) maps and colored FA maps are the two important maps in clinical use and scientific ...the FA and colored FA maps were then computed from the ...

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Structural and functional brain changes in perimenopausal women who are susceptible to migraine: a study protocol of multi-modal MRI trial

Structural and functional brain changes in perimenopausal women who are susceptible to migraine: a study protocol of multi-modal MRI trial

... reduced fractional anisotropy (FA) in the right frontal of migraine patients by using a tract-based spatial statistics (TBSS) method, which means the microstructure of white matter (WM) in that ...

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White Matter Abnormality Correlates with Developmental and Seizure Outcomes in West Syndrome of Unknown Etiology

White Matter Abnormality Correlates with Developmental and Seizure Outcomes in West Syndrome of Unknown Etiology

... and fractional anisotropy (FA), mean diffusivity, axial diffusivity, and radial diffusivity maps were ...representative FA image was first identified, and all FA data for a subject were ...

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Diffusion tensor imaging in the characterization of multiple system atrophy

Diffusion tensor imaging in the characterization of multiple system atrophy

... Materials and methods: Twenty MSA subjects, ten parkinsonian dominant (MSA-P), ten cerebellar dominant (MSA-C), and 20 healthy volunteer subjects were recruited. Fractional anisotropy, mean diffusivity, ...

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Ultra High Field Diffusion MRI Reveals Early Axonal Pathology in Spinal Cord of ALS mice

Ultra High Field Diffusion MRI Reveals Early Axonal Pathology in Spinal Cord of ALS mice

... On the other hand, since the average life expectancy of ALS patients from the time of diagnosis ranges from two to five years, any meaningful improvement in the ALS survival rate would depend on the establishment of ...

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Impact of region-of-interest method on quantitative analysis of DTI data in the optic tracts

Impact of region-of-interest method on quantitative analysis of DTI data in the optic tracts

... the FA map, have been preferred for analysis of the anterior visual pathways [5, 20, ...that FA differed depending on ROI method and, in accordance with other studies, that the variability was larger the ...

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Diffusion tensor imaging for characterizing tumor microstructure and improving diagnostic performance on breast MRI: a prospective observational study

Diffusion tensor imaging for characterizing tumor microstructure and improving diagnostic performance on breast MRI: a prospective observational study

... diffusion anisotropy by blocking ducts [18, ...as fractional an- isotropy (FA), a measure of diffusion directionality in which higher FA indicates more anisotropic diffusion ori- ented along a ...

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