scholarly journals Identification of optic radiation in-vivo using diffusion tensor imaging and fiber tractography

2010 ◽  
Vol 8 (6) ◽  
pp. 958-958 ◽  
Author(s):  
A. Sherbondy ◽  
R. Dougherty ◽  
B. Wandell
Keyword(s):  
Diffusion Tensor Imaging ◽  
Diffusion Tensor ◽  
Optic Radiation ◽  
Fiber Tractography

scholarly journals Meyer’s Loop Anatomy Demonstrated Using Diffusion Tensor MR Imaging and Fiber Tractography at 3T

2014 ◽  
Vol 60 (5) ◽  
pp. 215-222 ◽  
Author(s):  
Cristina Goga ◽  
Zeynep Firat ◽  
Klara Brinzaniuc ◽  
Is Florian
Keyword(s):  
Diffusion Tensor Imaging ◽  
Diffusion Tensor ◽  
Region Of Interest ◽  
Fiber Tractography ◽  
Brain Images ◽  
3 Dimensional ◽  
Software Release ◽  
Magnetic Resonance Imaging Mri ◽  
Meyer’S Loop

Abstract Objective: The ultimate anatomy of the Meyer’s loop continues to elude us. Diffusion tensor imaging (DTI) and diffusion tensor tractography (DTT) may be able to demonstrate, in vivo, the anatomy of the complex network of white matter fibers surrounding the Meyer’s loop and the optic radiations. This study aims at exploring the anatomy of the Meyer’s loop by using DTI and fiber tractography. Methods: Ten healthy subjects underwent magnetic resonance imaging (MRI) with DTI at 3 T. Using a region-of-interest (ROI) based diffusion tensor imaging and fiber tracking software (Release 2.6, Achieva, Philips), sequential ROI were placed to reconstruct visual fibers and neighboring projection fibers involved in the formation of Meyer’s loop. The 3-dimensional (3D) reconstructed fibers were visualized by superimposition on 3-planar MRI brain images to enhance their precise anatomical localization and relationship with other anatomical structures. Results: Several projection fiber including the optic radiation, occipitopontine/parietopontine fibers and posterior thalamic peduncle participated in the formation of Meyer’s loop. Two patterns of angulation of the Meyer’s loop were found. Conclusions: DTI with DTT provides a complimentary, in vivo, method to study the details of the anatomy of the Meyer’s loop.

scholarly journals In vivo visualization of the levator ani muscle subdivisions using MR fiber tractography with diffusion tensor imaging

2012 ◽  
Vol 221 (3) ◽  
pp. 221-228 ◽  
Author(s):  
Pascal Rousset ◽  
Vincent Delmas ◽  
Jean-Noël Buy ◽  
Alain Rahmouni ◽  
Dominique Vadrot ◽  
...  
Keyword(s):  
Diffusion Tensor Imaging ◽  
Diffusion Tensor ◽  
Levator Ani ◽  
Levator Ani Muscle ◽  
Fiber Tractography

scholarly journals Evaluation of Brachial Plexus Using Combined Stereological Techniques of Diffusion Tensor Imaging and Fiber Tracking

2019 ◽  
Vol 14 (01) ◽  
pp. e16-e23
Author(s):  
Niyazi Acer ◽  
Mehmet Turgut
Keyword(s):  
Diffusion Tensor Imaging ◽  
Brachial Plexus ◽  
Diffusion Tensor ◽  
Three Dimensional ◽  
Fiber Tracking ◽  
Nerve Fibers ◽  
Fiber Tractography ◽  
Functional Features

Background Brachial plexus (BP) is composed of intercommunications among the ventral roots of the nerves C5, C6, C7, C8, and T1 in the neck. The in vivo and in vitro evaluation of axons of the peripheral nervous system is performed using different techniques. Recently, many studies describing the application of fiber tractography and stereological axon number estimation to peripheral nerves have been published. Methods Various quantitative parameters of nerve fibers, including axon number, density, axonal area, and myelin thickness, can be estimated using stereological techniques. In vivo three-dimensional reconstruction of axons of BP can be visualized using a combined technique of diffusion tensor imaging (DTI) and fiber tracking with the potential to evaluate nerve fiber content. Conclusion It is concluded that terminal branches of BP can be successfully visualized using DTI, which is a highly reproducible method for the evaluation of BP as it shows anatomical and functional features of neural structures. We believe that quantitative morphological findings obtained from BP will be useful for new experimental, developmental, and pathological studies in the future.

scholarly journals Diffusion Tensor Imaging for In Vivo Detection of Degenerated Optic Radiation

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Georg Michelson ◽  
Tobias Engelhorn ◽  
Simone Waerntges ◽  
Arnd Doerfler
Keyword(s):  
Diffusion Tensor Imaging ◽  
Diffusion Tensor ◽  
Open Angle Glaucoma ◽  
Optic Radiation ◽  
New Approach ◽  
Transneuronal Degeneration ◽  
In Vivo Detection ◽  
Magnetic Resonance Imaging Mri ◽  
Diffusion Tensor Imaging Dti

Glaucomatous optic nerve atrophy may continue to the linked optic radiation by transneuronal degeneration, as described in animal models of glaucoma. In vivo visualization of the visual pathway represents a new challenge in the field of ophthalmology. We present a new approach for illustration of the optic radiation by diffusion tensor imaging (DTI) based on magnetic resonance imaging (MRI). The DTI was established by use of a 3T high-field scanner. The case of a patient with primary open-angle glaucoma is opposed to this one of a healthy subject to demonstrate the visible rarefication of the optic radiation. The goal was to introduce the technique of the DTI also in ophthalmology and to demonstrate that it may be useful to judge glaucoma-related differences.

scholarly journals Wallerian Degeneration in the Optic Radiation After Temporal Lobectomy Demonstrated In Vivo with Diffusion Tensor Imaging

Epilepsia ◽  
1999 ◽  
Vol 40 (8) ◽  
pp. 1155-1158 ◽  
Author(s):  
U. C. Wieshmann ◽  
M. R. Symms ◽  
C. A. Clark ◽  
L. Lemieux ◽  
F. Franconi ◽  
...  
Keyword(s):  
Diffusion Tensor Imaging ◽  
Wallerian Degeneration ◽  
Diffusion Tensor ◽  
Temporal Lobectomy ◽  
Optic Radiation

In vivo diffusion tensor imaging of the neonatal rat brain development

2013 ◽  
Vol 44 (S 01) ◽  
Author(s):  
M Breu ◽  
D Reisinger ◽  
D Wu ◽  
Y Zhang ◽  
A Fatemi ◽  
...  
Keyword(s):  
Diffusion Tensor Imaging ◽  
Brain Development ◽  
Rat Brain ◽  
Diffusion Tensor ◽  
Neonatal Rat ◽  
Neonatal Rat Brain

scholarly journals Diffusion tensor imaging and fiber tractography of the median nerve at 1.5T: optimization of b value

2008 ◽  
Vol 38 (1) ◽  
pp. 51-59 ◽  
Author(s):  
Gustav Andreisek ◽  
Lawrence M. White ◽  
Andrea Kassner ◽  
George Tomlinson ◽  
Marshall S. Sussman
Keyword(s):  
Diffusion Tensor Imaging ◽  
Median Nerve ◽  
Diffusion Tensor ◽  
B Value ◽  
Fiber Tractography
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