How does diffusion tensor imaging work

If the DTI scan identifies water flow is obstructed or misdirected in white matter, that finding can be evidence of a TBI or concussion. This modern technology delivers fast, stress-free scans patients and technicians can trust.

For almost 20 years, Windsor Imaging has been able to provide thorough examinations throughout South Florida.

The Boca-Delray Beach , Fort Lauderdale , and Fort Pierce locations specialize in conducting safe and seamless diagnostic imaging services. Windsor Imaging will be glad to safely help you regardless of the imaging service you need.

For more information, contact Windsor Imaging today. Your email address will not be published. Corey Levin December 2, Lancet Neurol.

AFNI: what a long strange trip it's been. Neuroimage 62 , — Whole-brain histogram and voxel-based analyses of diffusion tensor imaging in patients with leukoaraiosis: correlation with motor and cognitive impairment. Deterministic and probabilistic tractography based on complex fibre orientation distributions. IEEE Trans. Imaging 28 , — MR color mapping of myelin fiber orientation.

Neuroimage 55 , — Brain templates and atlases. Effects of signal-to-noise ratio on the accuracy and reproducibility of diffusion tensor imaging-derived fractional anisotropy, mean diffusivity, and principal eigenvector measurements at 1. Imaging 26 , — Analysis of T2 limitations and off-resonance effects on spatial resolution and artifacts in echo-planar imaging.

The correlation between white-matter microstructure and the complexity of spontaneous brain activity: a difussion tensor imaging-MEG study. Neuroimage 57 , — Basic concepts of MR imaging, diffusion MR imaging, and diffusion tensor imaging. Quantitative evaluation of 10 tractography algorithms on a realistic diffusion MR phantom. Neuroimage 56 , — The relationship between diffusion tensor imaging and volumetry as measures of white matter properties.

Neuroimage 42 , — A Bayesian approach for stochastic white matter tractography. MR diffusion imaging in ischemic stroke. Neuroimaging Clin. Addressing a systematic vibration artifact in diffusion-weighted MRI.

Brain Mapp. BrainVoyager— past, present, future. Resting-state functional connectivity reflects structural connectivity in the default mode network. Cortex 19 , 72—78 Line scan diffusion imaging.

A high-resolution whole head simulation study. Neuroimage 51 , — Understanding changes in DTI metrics in patients with different stages of neurocysticercosis. Imaging 30 , — Understanding diffusion MR imaging techniques: from scalar diffusion-weighted imaging to diffusion tensor imaging and beyond. Radiographics 26 Suppl. A review of diffusion tensor magnetic resonance imaging computational methods and software tools. A standardised evaluation of pre-surgical imaging of the corticospinal tract: where to place the seed ROI.

More is not always better: increased fractional anisotropy of superior longitudinal fasciculus associated with poor visuospatial abilities in Williams syndrome. Correction of B0 susceptibility induced distortion in diffusion-weighted images using large-deformation diffeomorphic metric mapping. The relationship between TMS measures of functional properties and DTI measures of microstructure of the corticospinal tract.

Brain Stimul. Diffusion MR imaging: an important tool in the assessment of brain tumors. White matter plasticity in the corticospinal tract of musicians: a diffusion tensor imaging study. Neuroimage 46 , — Dummy version. Diffusion tensor imaging of cerebral white matter: a pictorial review of physics, fiber tract anatomy, and tumor imaging patterns.

DtiStudio: resource program for diffusion tensor computation and fiber bundle tracking. The effect of gradient sampling schemes on measures derived from diffusion tensor MRI: a Monte Carlo study. Studying connections in the living human brain with diffusion MRI.

Challenges and limitations of quantifying brain connectivity in vivo with diffusion MRI. Imaging Med. Precision and accuracy in diffusion tensor magnetic resonance imaging. Imaging 21 , 87—99 Twenty-five pitfalls in the analysis of diffusion MRI data.

Spatial normalization and averaging of diffusion tensor MRI data sets. Neuroimage 17 , — Optimal strategies for measuring diffusion in anisotropic systems by magnetic resonance imaging. White matter integrity, fiber count, and other fallacies: the do's and don'ts of diffusion MRI. Non-invasive assessment of axonal fiber connectivity in the human brain via diffusion tensor MRI.

Protocol error artifacts in MRI: sources and remedies revisited. Radiography 13 , — [ Google Scholar ] Kennedy S. Diffusion measurements free of motion artifacts using intermolecular dipole-dipole interactions. Diffusion tensor visualization with glyph packing. Investigation of anomalous estimates of tensor-derived quantities in diffusion tensor imaging. Prospective and retrospective motion correction in diffusion magnetic resonance imaging of the human brain.

Neuroimage 59 , — Fractional anisotropy of cerebral white matter and thickness of cortical gray matter across the lifespan.

Neuroimage 58 , 41—49 DTI parameter optimisation for acquisition at 1. Resolution of crossing fibers with constrained compressed sensing using diffusion tensor MRI. Atlas-based segmentation of white matter tracts of the human brain using diffusion tensor tractography and comparison with classical dissection. Neuroimage 39 , 62—79 White matter tractography using diffusion tensor deflection.

Diffusion, confusion and functional MRI. MR imaging of intravoxel incoherent motions: application to diffusion and perfusion in neurologic disorders. Diffusion tensor imaging: concepts and applications.

Imaging 13 , — Artifacts and pitfalls in diffusion MRI. Imaging 24 , — Six is enough? Comparison of diffusion parameters measured using six or more diffusion-encoding gradient directions with deterministic tractography.

Hawaii: , The B-matrix must be rotated when correcting for subject motion in DTI data. Individual functional ROI optimization via maximization of group-wise consistency of structural and functional profiles.

Neuroinformatics 10 , — Head injury or head motion? Assessment and quantification of motion artifacts in diffusion tensor imaging studies. Quality control of diffusion weighted images. SPIE : J Neuroinformatics 8 , 5—17 Cerebral white matter integrity and cognitive aging: contributions from diffusion tensor imaging.

Multi-planar image formation using NMR spin echoes. Self-diffusion NMR imaging using stimulated echoes. Analysis of functional magnetic resonance imaging in python. Correcting eddy current and motion effects by affine whole-brain registrations: evaluation of three-dimensional distortions and comparison with slicewise correction. Introduction to Diffusion Tensor Imaging. Diffusion magnetic resonance imaging: its principle and applications.

Three-dimensional tracking of axonal projections in the brain by magnetic resonance imaging. Fiber tracking: principles and strategies— a technical review.

Principles of diffusion tensor imaging and its applications to basic neuroscience research. Neuron 51 , — Gray and white matter volumetric and diffusion tensor imaging DTI analyses in the early stage of first-episode schizophrenia. Diffusion-tensor imaging of cognitive performance. Brain Cogn. Early detection of regional cerebral ischemia in cats: comparison of diffusion- and T2-weighted MRI and spectroscopy.

Diffusion tensor MR imaging and fiber tractography: theoretic underpinnings. Diffusion tensor MR imaging and fiber tractography: technical considerations. Development and initial evaluation of 7-T q-ball imaging of the human brain. Rapid isotropic diffusion mapping without susceptibility artifacts: whole brain studies using diffusion-weighted single-shot STEAM MR imaging.

Three-dimensional interactive and stereotactic human brain atlas of white matter tracts. Neuroinformatics 10 , 33—55 Diffusion-tensor MR imaging and tractography: exploring brain microstructure and connectivity. Radiology , — Human brain white matter atlas: identification and assignment of common anatomical structures in superficial white matter. Neuroimage 43 , — Correction of motional artifacts in diffusion-weighted MR images using navigator echoes.

Spatial normalization of diffusion tensor MRI using multiple channels. Neuroimage 20 , — A framework for a streamline-based probabilistic index of connectivity PICo using a structural interpretation of MRI diffusion measurements.

Imaging 18 , — Replicability of diffusion tensor imaging measurements of fractional anisotropy and trace in brain. Toward a quantitative assessment of diffusion anisotropy. Diffusion tensor MR imaging of the human brain. Signal to noise ratio and uncertainty in diffusion tensor imaging at 1.

Imaging 33 , — A combined fMRI and DTI examination of functional language lateralization and arcuate fasciculus structure: effects of degree versus direction of hand preference. Reduction of eddy-current-induced distortion in diffusion MRI using a twice-refocused spin echo. Comprehensive approach for correction of motion and distortion in diffusion-weighted MRI.

Imaging 17 , — High-resolution diffusion imaging using a radial turbo-spin-echo sequence: implementation, eddy current compensation, and self-navigation. Tract-based spatial statistics: voxelwise analysis of multi-subject diffusion data.

Neuroimage 31 , — Neuroimage 23 Suppl. Voxel based versus region of interest analysis in diffusion tensor imaging of neurodevelopment. Dysmyelination revealed through MRI as increased radial but unchanged axial diffusion of water. Echo-planar imaging: magnetic resonance imaging in a fraction of a second. Science , 43—50 Diffusion tensor imaging of the brain: review of clinical applications.

Neuroradiology 46 , — BMC Psychiatry 7 : 25 The spatial mapping of translational diffusion coefficients by the NMR imaging technique. Quantitative and reproducibility study of four tractography algorithms used in clinical routine. Imaging 34 , — COMT genotype affects prefrontal white matter pathways in children and adolescents. Neuroimage 53 , — You will see a monitor through a system of mirrors while in the magnet.

Instructions and tasks will be displayed on this screen. It is important that you devote all of your effort to the tasks in order for the images of your brain to be meaningful.

The most common tasks performed include:. Finger tapping: You will be instructed to tap your thumb and fingers in one or both hands. Word generation: When you see a letter, think of a word that starts with that letter. Do not say the word out loud. Verb generation: When you see a noun, think of a verb that is associated with that noun. Sentence completion: You will see a sentence with a blank.

Think of the word that completes the sentence. The exam usually takes 1 to 2 hours. It is important that you relax and lie as still as possible. Any movement during this time will blur the picture. You may be given an injection of contrast dye into your arm or through an IV to enhance the images. After the test is complete, you are free to go. You may be told to drink lots of fluids to help your kidneys remove the contrast dye from your body. There are no known health risks associated with the magnetic field or the radio waves used by the machine.

Some people are sensitive to the contrast agent and may develop an allergic reaction. All contrast agents are FDA-approved and safe. Be sure to tell your doctor if you have diabetes or kidney problems. A kidney function test may be needed prior to the MRI to make sure your kidneys are able to clear the contrast agent from your body.