scholarly journals Aberrant Anterior Thalamic Radiation Structure in Bipolar Disorder: A Diffusion Tensor Tractography Study

2018 ◽  
Vol 9 ◽  
Author(s):  
Richi Niida ◽  
Bun Yamagata ◽  
Akira Niida ◽  
Akihiko Uechi ◽  
Hiroshi Matsuda ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Diffusion Tensor ◽  
Diffusion Tensor Tractography ◽  
Anterior Thalamic Radiation

scholarly journals Improved Visualization of the Anterior Thalamic Radiation in Bipolar Disorder by Diffusion Tensor Tractography

2018 ◽  
Vol 07 (09) ◽  
pp. 505-512
Author(s):  
Richi Niida ◽  
Akihiko Uechi ◽  
Akira Niida ◽  
Hiroshi Matsuda ◽  
Bun Yamagata ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Diffusion Tensor ◽  
Diffusion Tensor Tractography ◽  
Anterior Thalamic Radiation

scholarly journals Pictorial essay: How co-registered BOLD fMRI and DTI data can improve diffusion tensor tractography

2021 ◽  
pp. 101258
Author(s):  
Bojan D. Petrovic ◽  
Doug Burman ◽  
Shakeel Chowdhry ◽  
Julian E. Bailes ◽  
Joel Meyer
Keyword(s):  
Diffusion Tensor ◽  
Diffusion Tensor Tractography ◽  
Bold Fmri ◽  
Pictorial Essay

Corticoreticular pathway in the human brain: Diffusion tensor tractography study

2012 ◽  
Vol 508 (1) ◽  
pp. 9-12 ◽  
Author(s):  
Sang Seok Yeo ◽  
Min Cheol Chang ◽  
Yong Hyun Kwon ◽  
Young Jin Jung ◽  
Sung Ho Jang
Keyword(s):  
Human Brain ◽  
Diffusion Tensor ◽  
Diffusion Tensor Tractography ◽  
Corticoreticular Pathway

Diffusion tensor tractography indices in patients with frontal lobe injury and its correlation with neuropsychological tests

2012 ◽  
Vol 114 (6) ◽  
pp. 564-571 ◽  
Author(s):  
Deepa Pal ◽  
Rakesh K. Gupta ◽  
Shruti Agarwal ◽  
Abhishek Yadav ◽  
Bal K. Ojha ◽  
...  
Keyword(s):  
Frontal Lobe ◽  
Neuropsychological Tests ◽  
Diffusion Tensor ◽  
Diffusion Tensor Tractography

Diffusion tensor tractography of the temporal stem on the inferior limiting sulcus

2008 ◽  
Vol 108 (4) ◽  
pp. 775-781 ◽  
Author(s):  
Feng Wang ◽  
Tao Sun ◽  
Xing-Gang Li ◽  
Na-Jia Liu
Keyword(s):  
White Matter ◽  
Diffusion Tensor ◽  
Anterior Commissure ◽  
Region Of Interest ◽  
Diffusion Tensor Tractography ◽  
Optic Radiation ◽  
Uncinate Fasciculus ◽  
White Matter Tracts ◽  
Temporal Horn ◽  
Temporal Stem

Object The aim of this study was to use diffusion tensor tractography (DTT) to define the 3D relationships of the uncinate fasciculus, anterior commissure, inferior occipitofrontal fasciculus, inferior thalamic peduncle, and optic radiation and to determine the positioning landmarks of these white matter tracts. Methods The anatomy was studied in 10 adult human brain specimens. Brain DTT was performed in 10 healthy volunteers. Diffusion tensor tractography images of the white matter tracts in the temporal stem were obtained using the simple single region of interest (ROI) and multi-ROIs based on the anatomical knowledge. Results The posteroinferior insular point is the anterior extremity of intersection of the Heschl gyrus and the inferior limiting sulcus. On the inferior limiting sulcus, this point is the posterior limit of the optic radiation, and the temporal stem begins at the limen insulae and ends at the posteroinferior insular point. The distance from the limen insulae to the tip of the temporal horn is just one third the length of the temporal stem. The uncinate fasciculus comprises the core of the anterior temporal stem, behind which the anterior commissure and the inferior thalamic peduncle are located, and they occupy the anterior third of the temporal stem. The inferior occipitofrontal fasciculus passes through the entire temporal stem. The most anterior extent of the Meyer loop is located between the anterior tip of the temporal horn and the limen insulae. Most of the optic radiation crosses the postmedian two thirds of the temporal stem. Conclusions On the inferior limiting sulcus, the posteroinferior insular point is a reliable landmark of the posterior limit of the optic radiations. The limen insulae, anterior tip of the temporal horn, and posteroinferior insular point may be used to localize the white matter fibers of the temporal stem in analyzing magnetic resonance imaging or during surgery.

scholarly journals Relationship between white matter integrity and serum cortisol levels in drug-naive patients with major depressive disorder: Diffusion tensor imaging study using tract-based spatial statistics

2016 ◽  
Vol 208 (6) ◽  
pp. 585-590 ◽  
Author(s):  
Xiaodan Liu ◽  
Keita Watanabe ◽  
Shingo Kakeda ◽  
Reiji Yoshimura ◽  
Osamu Abe ◽  
...  
Keyword(s):  
Major Depressive Disorder ◽  
White Matter ◽  
Diffusion Tensor ◽  
Serum Cortisol ◽  
White Matter Integrity ◽  
Uncinate Fasciculus ◽  
Major Depressive ◽  
Drug Naïve ◽  
Cortisol Levels ◽  
Anterior Thalamic Radiation

BackgroundHigher daytime cortisol levels because of a hyperactive hypothalamic–pituitary–adrenal axis have been reported in patients with major depressive disorder (MDD). The elevated glucocorticoids inhibit the proliferation of the oligodendrocytes that are responsible for myelinating the axons of white matter fibre tracts.AimsTo evaluate the relationship between white matter integrity and serum cortisol levels during a first depressive episode in drug-naive patients with MDD (MDD group) using a tract-based spatial statistics (TBSS) method.MethodThe MDD group (n = 29) and a healthy control group (n = 47) underwent diffusion tensor imaging (DTI) scans and an analysis was conducted using TBSS. Morning blood samples were obtained from both groups for cortisol measurement.ResultsCompared with the controls, the MDD group had significantly reduced fractional anisotropy values (P<0.05, family-wise error (FWE)-corrected) in the inferior fronto-occipital fasciculus, uncinate fasciculus and anterior thalamic radiation. The fractional anisotropy values of the inferior fronto-occipital fasciculus, uncinate fasciculus and anterior thalamic radiation had significantly negative correlations with the serum cortisol levels in the MDD group (P<0.05, FWE-corrected).ConclusionsOur findings indicate that the elevated cortisol levels in the MDD group may injure the white matter integrity in the frontal–subcortical and frontal–limbic circuits.

Sign in / Sign up

Export Citation Format

Share Document