Results 61 to 70 of about 2,999,829 (296)

Stability effects on results of diffusion tensor imaging analysis by reduction of the number of gradient directions due to motion artifacts: an application to presymptomatic Huntington's disease. [PDF]

, 2011
In diffusion tensor imaging (DTI), an improvement in the signal-to-noise ratio (SNR) of the fractional anisotropy (FA) maps can be obtained when the number of recorded gradient directions (GD) is increased.
Müller, HP, Kassubek, J, Landwehrmeyer, GB, Kloppel, S, Tabrizi, SJ, Süssmuth, SD, Ludolph, A   +6 more
core  

Diffusion tensor MR microscopy of tissues with low diffusional anisotropy

Radiology and Oncology, 2016
Diffusion tensor imaging exploits preferential diffusional motion of water molecules residing within tissue compartments for assessment of tissue structural anisotropy.
Bajd Franci, Mattea Carlos, Stapf Siegfried, Sersa Igor   +3 more
doaj   +1 more source

Diffusion tensor magnetic resonance imaging strategies for color mapping of human brain anatomy

Journal of Medical Signals and Sensors, 2018
Background: A color mapping of fiber tract orientation using diffusion tensor imaging (DTI) can be prominent in clinical practice. The goal of this paper is to perform a comparative study of visualized diffusion anisotropy in the human brain anatomical ...
Saïd Boujraf
doaj   +1 more source

Arterial Spin‐Labeling MRI at the Cortical‐CSF Interface: A Novel Biomarker in Alzheimer Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background/Objective Arterial spin‐labeling (ASL) MRI can measure perfusion signal adjacent to CSF spaces and may provide information regarding CSF‐adjacent water transport physiology. We developed an automated pipeline to extract cortical‐CSF interface (IF) perfusion for comparison between Alzheimer disease (AD) and cognitively normal ...
Mona Asghariahmadabad, Pouya Metanat, Michael Thomas, Luke W. Bonham, Tyson Lam, Mehmet Kurt, Hong Nguyen, Tara Ellingson, Mauro Zucchelli, Stefano Casagranda, Quin Lu, Andreas M. Rauschecker, Leo Sugrue, Luis E. Savastano, Christopher P. Hess, Kamalini Ranasinghe, S. Andrew Josephson, Bruce L. Miller, Jennifer S. Yokoyama, Gil D. Rabinovici, Peter A. Ljubenkov, Lawren VandeVrede, Kambiz Nael   +22 more
wiley   +1 more source

Correcting for Motion between Acquisitions in Diffusion MR Imaging [PDF]

, 2009
The diffusion tensor (DT) and other diffusion models assume that each voxel corresponds to the same anatomical location in all the measurements. Movements and distortions violate this assumption and typically the images are realigned before model ...
Bai, Y
core  

Different patterns of white matter degeneration using multiple diffusion indices and volumetric data in mild cognitive impairment and Alzheimer patients [PDF]

, 2012
Alzheimeŕs disease (AD) represents the most prevalent neurodegenerative disorder that causes cognitive decline in old age. In its early stages, AD is associated with microstructural abnormalities in white matter (WM).
Alves, Gilberto Sousa, Gilberto Sousa Alves, Felipe Sudo, Tarik Karakaya, Letice Valente, Laurence O’Dwyer, Viola Oertel-Knöchel, Engelhardt, Eliasz, David Prvulovic, Denise Moreira, Christian Knöchel, O’Dwyer, Laurence, Karakaya, Tarik, Fabian Fuβer, Carlos Eduardo Alves, Fußer, Fabian, Johannes Pantel, Laurence O'Dwyer, Valente, Letice, Jerson Laks, Prvulovic, David, Moreira, Denise, Alves, Carlos Eduardo, Alina Jurcoane, Pantel, Johannes, Oertel-Knöchel, Viola, Laks, Jerson, Eliasz Engelhardt, Sudo, Felipe, Fabian Fußer, Jurcoane, Alina, Knöchel, Christian   +31 more
core   +2 more sources

Posterior Disconnection Syndrome in Early‐Stage Adult‐Onset Cerebral Adrenoleukodystrophy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Adult‐onset cerebral adrenoleukodystrophy is potentially treatable but often difficult to recognize before advanced cerebral involvement. Herein, we describe three men with early‐stage disease who initially presented with subtle visual complaints rather than subcortical dementia. Targeted neuropsychological testing revealed higher‐order visual
Kazuto Katsuse, Takashi Matsukawa, Yumiko Nakamura, Kazuo Kakinuma, Shoko Ota, Ryo Hara, Saki Nakashima, Kaoru Ito, Yutaro Nakamori, Toshiyuki Kakumoto, Masashi Hamada, Shigenori Kanno, Kyoko Suzuki, Tatsushi Toda   +13 more
wiley   +1 more source

Multi-site genetic analysis of diffusion images and voxelwise heritability analysis : a pilot project of the ENIGMA–DTI working group [PDF]

, 2013
The ENIGMA (Enhancing NeuroImaging Genetics through Meta-Analysis) Consortium was set up to analyze brain measures and genotypes from multiple sites across the world to improve the power to detect genetic variants that influence the brain.
Sprooten, Emma, Glahn, David C., Curran, Joanne E., Mandl, R.C., Almasy, L., Kochunov, Peter V., Hulshoff Pol, H.E., Curran, J.E., Starr, John M., Brouwer, Rachel M., Wardlaw, J.M., Mitchell, Braxton D., Brouwer, R.M., Wright, M.J., Bastin, M.E., Mandl, René C., Medland, Sarah E., Glahn, D.C., Sussmann, Jessika E., Medland, S.E., Martin, N.G., McMahon, K.L., Landman, Bennett A., Hulshoff Pol, Hilleke E., Nichols, T.E., Nichols, Thomas E., Toga, Arthur W., Peterson, C.P., Thompson, P.M., Jahanshad, N., Martin, Nicholas G., Wardlaw, Joanna M., Sprooten, E., Mitchell, B.D., McIntosh, A.M.; id_orcid, Pol, Hilleke E. Hulshoff, Hong, L. Elliot, Peterson, Charles P., Deary, Ian J., Hong, L.E., Kochunov, P.V., Jahanshad, Neda, Duggirala, Ravi, Bastin, Mark E., Fox, Peter T., McIntosh, Andrew M., de Zubicaray, G.I., de Zubicaray, Greig I., Landman, B.A., Fox, P.T., Thompson, Paul M., McMahon, Katie L., Blangero, J., Olvera, Rene L., Sussmann, J.E., Olvera, R.L., McIntosh, A.M., Wright, Margaret J., Duggirala, R., Almasy, Laura, Blangero, John, Starr, J.M., Toga, A.W., Deary, I.J.   +63 more
core   +2 more sources

Diffusion Tensor Imaging [PDF]

Current Protocols in Magnetic Resonance Imaging, 2003
AbstractThis unit provides step‐by‐step instructions on how to perform diffusion tensor imaging (DTI) in a clinical setting. A brief introduction on DTI techniques and current clinical applications is also presented. Additional technical details, practical considerations, and anticipated results are discussed in a commentary section.
Zhou, Xiaohong Joe, Thulborn, Keith R.
openaire   +2 more sources

White Matter and Perivascular Imaging Changes in Alzheimer's Disease and Cerebral Amyloid Angiopathy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Peak‐width of skeletonized mean diffusivity (PSMD) and diffusion tensor imaging–analysis along the perivascular space (DTI‐ALPS), reflecting white matter integrity and glymphatic function, are altered in Alzheimer's disease (AD).
Debina Laishram, Guangwei Du, Sangam Kanekar, Nandakumar Nagaraja   +3 more
wiley   +1 more source