Svensk översättning av 'diffusion tensor imaging' - engelskt-svenskt lexikon med många fler översättningar från engelska till svenska gratis online Diffusion Tensor Imaging (DTI) är en typ av diffusions MR där vattenmolekylernas rörelse mäts i många riktningar. Metoden ger diffusion) inklusive avbildning av nervbanorna(Diffusion Tensor Imaging, DTI), bestämning av hjärnans kemiska sammansättning ( diffusion magnetic resonance imaging; neoplasms; Functional Magnetic Resonance Imaging Betydelser av DTI på Svenska Som nämnts ovan används DTI som en förkortning i textmeddelanden för att representera Diffusion Tensor Imaging. Den här sidan handlar om förkortningen DTI och dess betydelser som Diffusion Tensor Imaging. Observera att Diffusion Tensor Imaging inte är den enda innebörden av DTI Diffusion tensor imaging. Diffusion tensor imaging (DTI) is a magnetic resonance imaging technique that enables the measurement of the restricted diffusion of water in tissue in order to produce neural tract images instead of using this data solely for the purpose of assigning contrast or colors to pixels in a cross-sectional image
. Fiber tractography (FT) is a 3D reconstruction technique to assess neural tracts using data collected by diffusion tensor imaging. Diffusion-weighted imaging (DWI) is based on the measurement of thermal Brownian motion of water molecules Diffusion Tensor Imaging (DTI) is a state-of-the art diagnostic tool which uses advanced MRI technology to detect traumatic brain injury not visible on conventional MRI, CT or other imaging modalities. DTI identifies diffuse axonal injury (DAI), which occurs primarily in the white matter tracts of the brain
controls underwent diffusion tensor MRI and were then investigated and compared groupwise. It was shown that tractography analyses may preferably be performed regionally, such as along the tracts or in different segments of the tracts Diffusion tensor imaging Fra Wikipedia, den frie encyklopedi Diffusion tensor imaging (DTI) er en teknikk utviklet i midten og siste halvdel av 1990-tallet, basert på magnetresonanstomografi (MR). Begrepet, som er engelsk, har foreløpig ikke fått noe hevdvunnet norsk navn Diffusion Tensor Imaging* Female Humans Image Processing, Computer-Assisted Male Meige Syndrome / pathology
Abstract. Diffusion tensor MRI (DT-MRI) is the only non-invasive method for characterising the microstructural organization of tissue in vivo. Generating parametric maps that help to visualise different aspects of the tissue microstructure (mean diffusivity, tissue anisotropy and dominant fibre orientation) involves a number of steps from deciding on the optimal acquisition parameters on the. Diffusion tensor imaging is an advanced magnetic resonance imaging modality that uses the Brownian motion of water molecules to provide data for images. Diffusion tensor imaging has been shown to help with increased sensitivity of and improving identification of pathology earlier in its process. This activity outlines the clinical significance. Diffuusiotensorikuvaus (engl. Diffusion tensor imaging, DTI) on magneettikuvaukseen perustuva kuvantamismenetelmä, jonka avulla mitataan veden lämpöliikettä kudoksessa.Menetelmällä voidaan visualisoida esimerkiksi aivojen valkean aineen ratoja kolmiulotteisesti, sillä vesi diffundoituu hermosäiekimpuissa paremmin ratojen suuntaisesti kuin kohtisuoraan niitä vastaan Diffusion tensor magnetic resonance imaging (DTI) is unsurpassed in its ability to map tissue microstructure and structural connectivity in the living human brain
Tractografie is het in beeld brengen van neurale verbindingen in de hersenen, door middel van Diffusion Tensor Imaging (DTI). DTI is een MRI (magnetische resonantie) techniek die gevoelig is voor diffusie van watermoleculen in het lichaam, en waarbij diffusiepatronen in een driedimensionaal beeld worden weergegeven. Hiermee kunnen zowel de lange bundels van zenuwvezels als meer gecompliceerde. Diffusion tensor imaging (DTI) comprises a group of techniques where calculated eigenvalues (λ1, λ2, and λ3) and eigenvectors (ε1, ε 2, and ε3) are used to create images reflecting various diffusion properties of a tissue.Regular diffusion-weighted (DW) imaging produces images based on only the sum or average of the eigenvalues
During the past few years, The Journal of Neuroscience has published more than 30 articles that describe investigations that used Diffusion Tensor Imaging (DTI) and related techniques as a primary observation method. This illustrates a growing interest in DTI within the basic and clinical neuroscience communities. This article summarizes DTI methodology in terms that can be immediately. Differentiation of high-grade-astrocytomas from solitary-brain-metastases: comparing diffusion kurtosis imaging and diffusion tensor imaging. Eur J Radiol 2015; 84: 2618 - 24 doi: 10.1016/j.ejrad.2015.10.007 pmid: 2648274
Diffusion tensor imaging: concepts and applications. J Magn Reson Imaging. 2001 Apr;13(4):534-46. Also, please familiarize yourself with three-dimensional graphics navigation in Matlab using the camera toolbar. The following links are helpful: View Control with the Camera Toolbar, Camera Motion Controls DTI (Diffusion Tensor Imaging) Serving Nationwide - Brain DTI available in all 50 States! Texas Brain Institute is the gold standard in diagnosing and treating Traumatic Brain Injury (TBI). Proving the details of a TBI has been a nearly impossible task in the past . Diffusion tensor imaging (DTI) crossing fibres: •FA lower than for single direction . Diffusion tensor imaging (DTI) degeneration of one fibre population in crossing case The diffusion tensor, and its relation to FA, MD, AD and RD. In DTI 101 we described how diffusion tensor imaging estimates brain microstructure by modeling diffusion of water in the brain. We briefly discuss that this is done by using ellipsoid or ball shaped tensors. This leads to the question; what is a tensor
Diffusion tensor imaging (DTI) can be used to assess nervous pathways in the brain, non-invasively and in vivo. Diffusion properties, measured by DTI, have been shown to correspond to pathology in nervo us tissue and, furthermore, can be used for visualization of white matter tracts through tractography Functional diffusion tensor imaging: measuring task-related fractional anisotropy changes in the human brain along white matter tracts. PLoS ONE. 2008. 3(11):e3631. . Uda S, Matsui M, Tanaka C, Uematsu A, Miura K, Kawana I, et al. Normal Development of Human Brain White Matter from Infancy to Early Adulthood: A Diffusion Tensor Imaging Study Mohan gives an overview of the key terms and concepts of diffusion tensor imaging (DTI).Links to software mentioned in the video:FSL: https://fsl.fmrib.ox.ac.. Introduction. Diffusion-tensor imaging (DTI) is a subtype of diffusion-weighted imaging based on measurements of molecular diffusion along multiple directions in space, which may enable characterization of microarchitecture of biologic tissues ().In isotropic tissues, the mean diffusion-based displacement of water molecules per unit time is equally large along all directions of space; however. svenska (Swedish) Türkçe (Turkish) September 12th, 2011. Neuroimaging techniques, such as functional MRI and Diffusion Tensor Imaging have become increasingly useful in characterizing the cognitive and neural deficits in autism
Diffusion Tensor Imaging (DTI) studies (reference to which I will give at the end of this reply) for example are able to pick up changes to the microstructure like the axons or the white matter. Diffusion Tensor Imaging Integral in the Diagnosis of Concussions and Traumatic Brain Injury East Houston Hospital & Clinics is led by physicians who combine state-of-the-art medicine with patient-centered care. ADHS hospitals offer the Subacute Trauma Program - the only one of its kind in the Southwest region. Within the program, the Texas Brain Center provides [ Diffusion Tensor Imaging is an advanced MRI technique using specialized hardware and software that is highly capable in terms of providing information that helps to determine the structural integrity of the brain in patients that have experienced a Traumatic Brain Injury (TBI). TBI is often associated with motor vehicle accidents, falls, and. Probing the cellular structure of in vivo biological tissue is a fundamental problem in biomedical imaging and medical science. This work introduces an approach for analyzing diffusion magnetic resonance imaging data acquired by the novel tensor-valued encoding technique for characterizing tissue microstructure
In this work, we aim to assess the significance of diffusion tensor imaging (DTI) and diffusion kurtosis imaging (DKI) parameters in grading gliomas. Retrospective studies were performed on 53 subjects with gliomas belonging to WHO grade II (n = 19), grade III (n = 20) and grade IV (n = 14). Expert marked regions of interest (ROIs) covering the tumour on T2-weighted images Mukherjee Diffusion Tensor Imaging of Traumatic Brain Injury Diffusion-weighted imaging (DWI), which assesses the microscopic motion of water molecules in brain tissue, has improved the evaluation of TBI, especially for DAI, through its superior sensitivity to foci of acute shearing injury (Liu et al., 1999; Huisman et al., 2003). Th SUMMARY: In this article, the underlying theory of clinical diffusion MR imaging, including diffusion tensor imaging (DTI) and fiber tractography, is reviewed. First, a brief explanation of the basic physics of diffusion-weighted imaging (DWI) and apparent diffusion coefficient (ADC) mapping is provided. This is followed by an overview of the additional information that can be derived from the.
Diffusion tensor imaging (DTI) is an advanced MRI technique that provides quantitative information about the microscopic structural organization of the white matter and changes in cell density and myelination, and it is a suitable MRI tool for studying Krabbe's disease. This Review discusses the available studies on the application of. Diffusion tensor imaging (DTI) has primarily been investigated for studying the structural connectivity in the CNS. 19 Additionally, the quantitative assessment of diffusion restriction is a marker of the neuronal microstructural integrity. 13 Fractional anisotropy (FA) is a composite measure of magnitude and directionality of diffusion restriction Diffusion tensor imaging (DTI) basically serves as an MRI-based tool to identify in vivo the microstructure of the brain and pathological processes due to neurological disorders within the cerebral white matter. DTI-based analyses allow for application to brain diseases both at the group level and in single subject data In the spinal cord, diffusion is faster along the fibers as compared to the slower diffusion perpendicular to the fibers because of microscopic barriers including axonal membranes and myelin sheath. 2 The unique contrast provided by DWI has been further characterized more widely as DTI in which the contrast derived from DWI in multiple directions is used to calculate a diffusion tensor, a.
Corpus callosum morphology in first-episode and chronic schizophrenia: combined magnetic resonance and diffusion tensor imaging study of Chinese Singaporean patients - Volume 204 Issue Part I: Introduction -- How to Use This Book -- Introduction to Diffusion Tensor Imaging -- Part II: Diffusion Tensor Imaging: From Theory to Practice -- Concepts of Diffusion in MRI -- From Diffusion to the Diffusion Tensor -- Quantitative DTI Measures -- Survivor's Guide to DTI Acquisition -- Checking and Correcting DTI Data -- Part III: Diffusion Tensor Imaging Analysis -- Strategies and. Diffusion Tensor Imaging (DTI) is a Magnetic Resonance Imaging (MRI) technique, that permits assessing the micro-structural integrity of the central nervous system. Conventional structural MRI usually underestimates the actual brain alterations associated with various neurological diseases. The latter can be illustrated by the following example
. Jefferson Hospital for Neuroscience is one of the first medical centers in the U.S. to develop and begin using translational, interactive 3-D technology such as diffusion tensor imaging Imaging of diffusivity Diffusion Tensor Imaging Two types of images can be obtained with DTI: • Mean diffusivity (MD): average of diffusion at every voxel across trace. • Fractional anisotropy (FA): degree of diffusion anisotropy at every voxel estimated by the tensor model. Values are scalar: from 0 (isotropy) to 1 (anisotropy)
. The science behind diffusion tensor imaging is very complex, but put in the simplest of terms, this type of medical imaging involves agitating molecules with electromagnetic radiation and recording the release of that energy DIFFUSION TENSOR IMAGING (DTI) is a useful technique for the noninvasive structural characterization of various anisotropic tissues (1-10).This method involves estimation of the within‐voxel diffusion tensor using a series of diffusion‐weighted imaging (DWI) images Diffusion Tensor Imaging Tutorial, S.Pujol, PhD LabelMap Seeding Set the Seed Spacing to 2 mm and select the Stopping Mode Fractional Anisotropy Use the default parameters for the minimum and maximum tract length, stopping value and stopping track curvature
Diffusion-weighted imaging (DWI) is a form of MR imaging based upon measuring the random Brownian motion of water molecules within a voxel of tissue. In general simplified terms, highly cellular tissues or those with cellular swelling exhibit lower diffusion coefficients Diffusion-Tensor Imaging Implicates Prefrontal Axonal Injury in Executive Function Impairment following Very Mild Traumatic Brain Injury (Lipton M.L. et al 2009). The study was to determine whether frontal white matter diffusion abnormalities could predict acute executive function impairment after mild traumatic brain injury Diffusion Tensor Imaging, also known as DTI, is an MRI-based neuroimaging technique that can locate specific brain inconsistencies invisible to a standard computed tomography scan, or CT scan. The DTI is designed to more accurately track extant brain abnormalities that arise after a TBI or concussion
View Diffusion Tensor Imaging Research Papers on Academia.edu for free A longitudinal diffusion tensor imaging study assessing white matter fiber tracts after sports related concussion M. Murugavel1, V. Cubon4, M. Putukian2, R. Echemendia5, D. Osherson3, A. Dettwiler1 1Princeton Neuroscience Institute, 2University Health Services, 3Department of. Diffusion tensor imaging data were acquired from 61 subjects (26 Alzheimers disease [AD], 11 subjects with amnestic mild cognitive impairment [aMCI], and 24 age-matched controls). An atlas-based approach was used to.
Diffusion-weighted imaging (DWI), which uses motion of intrinsic water molecules as genuine contrast was explored, then diffusion tensor imaging (DTI) made a step further and detects diffusion properties along at least six different directions, from which the main diffusion direction and the degree of diffusion anisotropy can be calculated which is called MR diffusion imaging (LeBihan and Breton, 1985; LeBihan et al., 1986; Merboldt et al., 1985), we use Eqs. 2, 3, 7, and 8 to estimate Deff in a voxel, which wecall MRdiffusion tensor imaging.-v C 260 Biophysical Journa
What is diffusion tensor imaging (DTI)? DTI is a specialised imaging technique that uses MRI technology to investigate the movement of water within tissues of interest. By applying a magnetic field, the movement (diffusivity) of water molecules can be visualised in vivo. The diffusion of water.. Diffusion-weighted magnetic resonance imaging (DWI or DW-MRI) is the use of specific MRI sequences as well as software that generates images from the resulting data that uses the diffusion of water molecules to generate contrast in MR images. It allows the mapping of the diffusion process of molecules, mainly water, in biological tissues, in vivo and non-invasively Purpose In this work we present a dual-phase diffusion tensor imaging (DTI) technique that incorporates a correction scheme for the cardiac material strain, based on 3D myocardial tagging. Methods In vivo dual-phase cardiac DTI with a stimulated echo approach and 3D tagging was performed in 10 healthy volunteers. The time course of material strain was estimated from the tagging data and used. Diffusion tensor imaging (DTI) is an extension of DWI which measures diffusion in multiple directions and has been used to study white matter tracts 4,5,6; it allows the measurement of fractional.
Higher-Order Tensors in Diffusion Imaging 133 3 Mathematical Background We include a basic introduction to tensors and tensor ﬁelds. In a nutshell, a tensor of order por p-tensor is a multilinear functional on pvector spaces T W V V V ! R, and can be represented in coordinates as a p-dimensional matrix A Recently, attention has been oriented towards diffusion tensor imaging (DTI) to segment white matter tracts of the brain [11, 12]. Although the tensor model fails to describe higher order anisotropies in heterogeneous areas where more than one fiber population exists, it is practically useful for extracting major white matter tracts, particularly the ones with predominant diffusivity pattern. Single Shell Free Water Elimination Diffusion Tensor Model. This is a Python implementation of a Free Water Elimination Model for the analysis of Single Shell Diffusion Tensor MRI Images. We would like to separate out the signal decay of extracellular free water from water that is in the vicinity of cellular tissue
Diffusion tensor imaging. Obtaining the diffusion tensor. Anisotropic diffusion may be decribed in terms of an ellipsoid tensor. The tensor consists of 3 vectors: a major eigenvector (or principal eigenvector) and 2 minor eigenvectors, with magnitudes being the major eigenvalue and minor eigenvalues, respectively Diffusion Tensor Imaging. Kelvin Lim is using a new brain-imaging method to understand schizophrenia. Emily Singer. Monday, March 13, 2006. This article is the sixth in a series of 10 stories we're running over two weeks, covering today's most significant (and just plain cool) emerging technologies. It's part of our annual 10 Emerging.
Accelerated MR Diffusion Tensor Imaging Using Distributed Compressed Sensing Yin Wu1, 2, Yan-Jie Zhu1, 2, Qiu-Yang Tang1, 2, Chao Zou1, 2, Wei Liu1, 2, Rui-Bin Dai1, 2, Xin Liu1, 2, Ed X. Wu3, 4, Leslie Ying5, Dong Liang, PhD 1, 2* 1Paul C. Lauterbur Research Centre for Biomedical Imaging, Shenzhen Key Laboratory for MRI, Shenzhen Institutes of Advanced Technology, 2Key Laboratory of Health. Diffusion tensor imaging (DTI) is an advanced magnetic resonance (MR) imaging technique, which provides information about the microstructure of nerve fibers noninvasively .With the application of the appropriate magnetic field gradients, MR imaging can be sensitized to the thermally driven random motion of water molecules in the direction of the field gradient Diffusion tensor imaging (DTI) may have prognostic utility in patients with traumatic brain injury (TBI), but the optimal timing of DTI data acquisition is unknown because of dynamic changes in white matter water diffusion during the acute and subacute stages of TBI. We aimed to characterize the direction and magnitude of early longitudinal changes in white matter fractional anisotropy (FA. Objectives To assess the possibility that diffusion tensor imaging (DTI) can detect white matter damage in mild traumatic brain injury (mTBI) patients via systematic review and meta-analysis. Methods DTI studies that compared mTBI patients and controls were searched using MEDLINE, Web of Science, and EMBASE, (1980 through April 2012). Results A comprehensive literature search identified 28 DTI. Diffusion tensor imaging (DTI) A refinement of magnetic resonance imaging that allows the doctor to measure the flow of water and track the pathways of white matter in the brain. DTI is able to detect abnormalities in the brain that do not show up on standard MRI scans. Mentioned in: Magnetic Resonance Imaging. Gale Encyclopedia of Medicine
Diffusion tensor imaging (DTI) is a magnetic resonance imaging technique that is increasingly being used for the non-invasive evaluation of brain white matter abnormalities. In this review, we discuss the basic principles of DTI, its roots and the contribution of European centres in its development, and we review the findings from DTI studies in schizophrenia Last, we introduced a method for translating high-resolution cardiac myofiber orientation architecture to soft robotic structures using diffusion tensor magnetic resonance imaging (DT-MRI), a nondestructive technique that reveals fiber architecture by detecting anisotropic diffusion of water in tissue (32-34) Diffusion tensor imaging (DTI) is widely used to assess tissue microstructure non-invasively. Cardiac DTI enables inference of cell and sheetlet orientations, which are altered under pathological conditions. However, DTI is affected by many factors, therefore robust validation is critical. Existing histological validation is intrinsically flawed, since it requires further tissue processing. The role of diffusion tensor imaging in the diagnosis, prognosis, and assessment of recovery and treatment of spinal cord injury: a systematic review Orel A. Zaninovich MD 1 , Mauricio J. Avila MD, MHPE 2 , Matthew Kay MBBS 3 , Jennifer L. Becker BMBS, MRCS, FRCR 3 , R. John Hurlbert MD, PhD 2 , and Nikolay L. Martirosyan MD, PhD
For diffusion tensor imaging (DTI) based analysis of white matter, we used an echo-planar imaging (EPI) 2D sequence with the TR 7300 ms and TE 90 ms. TA was 9:44 min. We acquired 56 slices (sagittal orientation) with a thickness of 3 mm per slice Introduction: Cognitive impairment after concussion has been widely reported, but there is no reliable imaging biomarker that predicts the severity of cognitive decline post-concussion. This study tests the hypothesis that patients with a history of concussion and persistent cognitive impairment have fractional anisotropy (FA) and mean diffusivity (MD) values from diffusion tensor imaging (DTI.