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Artículos de revistas sobre el tema "Bundle based tractography"

Autor: Grafiati
Publicado: 11 de marzo de 2023

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1

Sweet, Jennifer A., Sinem Balta Beylergil, Suraj Thyagaraj, et al. "Clinical Evaluation of Cingulum Bundle Connectivity for Neurosurgical Hypothesis Development." Neurosurgery 86, no. 5 (2019): 724–35. http://dx.doi.org/10.1093/neuros/nyz225.

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Abstract BACKGROUND The cingulum bundle (CB) has long been a target for psychiatric neurosurgical procedures, but with limited understanding of the brain networks being impacted. Recent advances in human tractography could provide a foundation to better understand the effects of neurosurgical interventions on the CB; however, the reliability of tractography remains in question. OBJECTIVE To evaluate the ability of different tractography techniques, derived from typical, human diffusion-weighted imaging (DWI) data, to characterize CB connectivity described in animal models. This will help valid
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2

Ameis, Stephanie H., Jin Fan, Conrad Rockel, Latha Soorya, A. Ting Wang, and Evdokia Anagnostou. "Altered cingulum bundle microstructure in autism spectrum disorder." Acta Neuropsychiatrica 25, no. 5 (2013): 275–82. http://dx.doi.org/10.1017/neu.2013.2.

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ObjectiveHere, we examined the cingulum bundle, a long-range white matter tract mediating dorsal limbic connectivity, using diffusion tensor imaging (DTI) tractography, in children and adolescents with autism spectrum disorder (ASD) versus controls. We hypothesised that cingulum bundle microstructure would be altered in ASD, based on evidence implicating abnormal white matter connectivity in this disorder.MethodsDTI data were acquired for 19 ASD participants (IQ ⩾ 70; 7–18 years; mean = 12.4 ± 3.1) and 16 age-matched controls (7–18 years; mean = 12.3 ± 3.6) on a 3 T magnetic resonance imaging
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3

Guo, Zhe, Yi Wang, Tao Lei, Yangyu Fan, and Xiuwei Zhang. "DTI Image Registration under Probabilistic Fiber Bundles Tractography Learning." BioMed Research International 2016 (2016): 1–12. http://dx.doi.org/10.1155/2016/4674658.

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Diffusion Tensor Imaging (DTI) image registration is an essential step for diffusion tensor image analysis. Most of the fiber bundle based registration algorithms use deterministic fiber tracking technique to get the white matter fiber bundles, which will be affected by the noise and volume. In order to overcome the above problem, we proposed a Diffusion Tensor Imaging image registration method under probabilistic fiber bundles tractography learning. Probabilistic tractography technique can more reasonably trace to the structure of the nerve fibers. The residual error estimation step in active
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4

Behrman-Lay, Ashley M., Christina Usher, Thomas E. Conturo, et al. "Fiber bundle length and cognition: a length-based tractography MRI study." Brain Imaging and Behavior 9, no. 4 (2014): 765–75. http://dx.doi.org/10.1007/s11682-014-9334-8.

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5

Baur, Alexander DJ, Tareef Daqqaq, Federico Collettini, et al. "Influence of fractional anisotropy thresholds on diffusion tensor imaging tractography of the periprostatic neurovascular bundle and selected pelvic tissues: do visualized tracts really represent nerves?" Acta Radiologica 58, no. 4 (2016): 472–80. http://dx.doi.org/10.1177/0284185116651004.

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Background Diffusion tensor imaging (DTI) tractography has recently been shown to successfully visualize periprostatic tracts allegedly representing the neurovascular bundle. Purpose To examine the impact of different fractional anisotropy (FA) thresholds on the results of DTI tractography in the male pelvis as well as to evaluate the resulting specificity for nerve tracts. Material and Methods Ten healthy male volunteers were examined at 3 Tesla. DTI tractography was performed based on seed points placed circularly around the prostate, in the rectoprostatic angle, the peripheral zone of the p
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6

Román, Claudio, Cecilia Hernández, Miguel Figueroa, et al. "Superficial white matter bundle atlas based on hierarchical fiber clustering over probabilistic tractography data." NeuroImage 262 (November 2022): 119550. http://dx.doi.org/10.1016/j.neuroimage.2022.119550.

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7

Briggs, Robert G., Onur Tanglay, Nicholas B. Dadario, et al. "The Unique Fiber Anatomy of Middle Temporal Gyrus Default Mode Connectivity." Operative Neurosurgery 21, no. 1 (2021): E8—E14. http://dx.doi.org/10.1093/ons/opab109.

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Abstract BACKGROUND The middle temporal gyrus (MTG) is understood to play a role in language-related tasks such as lexical comprehension and semantic cognition. However, a more specific understanding of its key white matter connections could promote the preservation of these functions during neurosurgery. OBJECTIVE To provide a detailed description of the underlying white matter tracts associated with the MTG to improve semantic preservation during neurosurgery. METHODS Tractography was performed using diffusion imaging obtained from 10 healthy adults from the Human Connectome Project. All tra
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8

Burks, Joshua D., Andrew K. Conner, Phillip A. Bonney, et al. "Anatomy and white matter connections of the orbitofrontal gyrus." Journal of Neurosurgery 128, no. 6 (2018): 1865–72. http://dx.doi.org/10.3171/2017.3.jns162070.

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OBJECTIVEThe orbitofrontal cortex (OFC) is understood to have a role in outcome evaluation and risk assessment and is commonly involved with infiltrative tumors. A detailed understanding of the exact location and nature of associated white matter tracts could significantly improve postoperative morbidity related to declining capacity. Through diffusion tensor imaging–based fiber tracking validated by gross anatomical dissection as ground truth, the authors have characterized these connections based on relationships to other well-known structures.METHODSDiffusion imaging from the Human Connecto
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9

Bracht, T., A. N. Doidge, P. A. Keedwell, and D. K. Jones. "Hedonic tone is associated with left supero-lateral medial forebrain bundle microstructure." Psychological Medicine 45, no. 4 (2014): 865–74. http://dx.doi.org/10.1017/s0033291714001949.

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Background.The medial forebrain bundle (MFB) is an important pathway of the reward system. Two branches have been described using diffusion magnetic resonance imaging (MRI)-based tractography: the infero-medial MFB (imMFB) and the supero-lateral MFB (slMFB). Previous studies point to white-matter microstructural alterations of the slMFB in major depressive disorder (MDD) during acute episodes. To extend this finding, this study investigates whether white-matter microstructure is also altered in MDD patients that are in remission. Further, we explore associations between diffusion MRI-based met
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10

Lin, Yueh-Hsin, Nicholas B. Dadario, Jorge Hormovas, et al. "Anatomy and White Matter Connections of the Superior Parietal Lobule." Operative Neurosurgery 21, no. 3 (2021): E199—E214. http://dx.doi.org/10.1093/ons/opab174.

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Abstract BACKGROUND The superior parietal lobule (SPL) is involved in somatosensory and visuospatial integration with additional roles in attention, written language, and working memory. A detailed understanding of the exact location and nature of associated white matter tracts could improve surgical decisions and subsequent postoperative morbidity related to surgery in and around this gyrus. OBJECTIVE To characterize the fiber tracts of the SPL based on relationships to other well-known neuroanatomic structures through diffusion spectrum imaging (DSI)-based fiber tracking validated by gross a
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11

Bu, Xuan, Miao Cao, Xiaoqi Huang, and Yong He. "The structural connectome in ADHD." Psychoradiology 1, no. 4 (2021): 257–71. http://dx.doi.org/10.1093/psyrad/kkab021.

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Abstract Attention-deficit/hyperactivity disorder (ADHD) has been conceptualized as a brain dysconnectivity disorder. In the past decade, noninvasive diffusion magnetic resonance imaging (dMRI) studies have demonstrated that individuals with ADHD have alterations in the white matter structural connectome, and that these alterations are associated with core symptoms and cognitive deficits in patients. This review aims to summarize recent dMRI-based structural connectome studies in ADHD from voxel-, tractography-, and network-based perspectives. Voxel- and tractography-based studies have demonst
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12

Kierońska, Sara, Paweł Sokal, Marta Dura, Magdalena Jabłońska, Marcin Rudaś, and Renata Jabłońska. "Tractography-Based Analysis of Morphological and Anatomical Characteristics of the Uncinate Fasciculus in Human Brains." Brain Sciences 10, no. 10 (2020): 709. http://dx.doi.org/10.3390/brainsci10100709.

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(1) Background: The uncinate fasciculus (UF) is a white matter bundle connecting the prefrontal cortex and temporal lobe. The functional role of the uncinate fasciculus is still uncertain. The role of the UF is attributed to the emotional empathy network. The present study aimed to more accurately the describe anatomical variability of the UF by focusing on the volume of fibers and testing for correlations with sex and age. (2) Material and Methods: Magnetic resonance imaging of adult patients with diffusion tensor imaging (DTI) was performed on 34 patients. The total number of fibers, volume
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13

Koenig, Katherine A., Ken E. Sakaie, Mark J. Lowe, et al. "The relationship between cognitive function and high-resolution diffusion tensor MRI of the cingulum bundle in multiple sclerosis." Multiple Sclerosis Journal 21, no. 14 (2015): 1794–801. http://dx.doi.org/10.1177/1352458515576983.

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Background: Imaging can provide noninvasive neural markers of disease progression in multiple sclerosis (MS) that are related to behavioral and cognitive symptoms. Past work suggests that diffusion tensor imaging (DTI) provides a measure of white matter pathology, including demyelination and axonal counts. Objectives: In the current study, the authors investigate the relationship of DTI measures in the cingulum bundle to common deficits in MS, including episodic memory, working memory, and information processing speed. Methods: Fifty-seven patients with MS and 17 age- and education-matched con
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14

Baker, Laurie M., Ryan P. Cabeen, Sarah Cooley, David H. Laidlaw, and Robert H. Paul. "Application of a Novel Quantitative Tractography-based Analysis of Diffusion Tensor Imaging to Examine Fiber Bundle Length In Human Cerebral White Matter." Technology & Innovation 18, no. 1 (2016): 21–29. http://dx.doi.org/10.21300/18.1.2016.21.

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15

Monroy-Sosa, Alejandro, Srikant S. Chakravarthi, Melanie B. Fukui, et al. "White Matter-Governed Superior Frontal Sulcus Surgical Paradigm: A Radioanatomic Microsurgical Study—Part I." Operative Neurosurgery 19, no. 4 (2020): E343—E356. http://dx.doi.org/10.1093/ons/opaa065.

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Abstract BACKGROUND Frontal subcortical and intraventricular pathologies are traditionally accessed via transcortical or interhemispheric-transcallosal corridors. OBJECTIVE To describe the microsurgical subcortical anatomy of the superior frontal sulcus (SFS) corridor. METHODS Cadaveric dissections were undertaken and correlated with magnetic resonance imaging/diffusion-tensor imaging-Tractography. Surgical cases demonstrated clinical applicability. RESULTS SFS was divided into the following divisions: proximal, precentral sulcus to coronal suture; middle, 3-cm anterior to coronal suture; and
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16

Noriega-Gonzalez, David C., Jesús Crespo, Francisco Ardura, et al. "Cerebral White Matter Connectivity in Adolescent Idiopathic Scoliosis: A Diffusion Magnetic Resonance Imaging Study." Children 9, no. 7 (2022): 1023. http://dx.doi.org/10.3390/children9071023.

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Adolescent idiopathic scoliosis (AIS) is characterized by the radiographic presence of a frontal plane curve, with a magnitude greater than 10° (Cobb technique). Diffusion MRI can be employed to assess the cerebral white matter. The aim of this study was to analyze, by means of MRI, the presence of any alteration in the connectivity of cerebral white matter in AIS patients. In this study, 22 patients with AIS participated. The imaging protocol consisted in T1 and diffusion-weighted acquisitions. Based on the information from one of the diffusion acquisitions, a whole brain tractography was per
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17

Meola, Antonio, Ayhan Comert, Fang-Cheng Yeh, Sananthan Sivakanthan, and Juan C. Fernandez-Miranda. "The nondecussating pathway of the dentatorubrothalamic tract in humans: human connectome-based tractographic study and microdissection validation." Journal of Neurosurgery 124, no. 5 (2016): 1406–12. http://dx.doi.org/10.3171/2015.4.jns142741.

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OBJECT The dentatorubrothalamic tract (DRTT) is the major efferent cerebellar pathway arising from the dentate nucleus (DN) and decussating to the contralateral red nucleus (RN) and thalamus. Surprisingly, hemispheric cerebellar output influences bilateral limb movements. In animals, uncrossed projections from the DN to the ipsilateral RN and thalamus may explain this phenomenon. The aim of this study was to clarify the anatomy of the dentatorubrothalamic connections in humans. METHODS The authors applied advanced deterministic fiber tractography to a template of 488 subjects from the Human Co
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18

Shao, Junming, Klaus Hahn, Qinli Yang, et al. "Hierarchical Density-Based Clustering of White Matter Tracts in the Human Brain." International Journal of Knowledge Discovery in Bioinformatics 1, no. 4 (2010): 1–25. http://dx.doi.org/10.4018/jkdb.2010100101.

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Diffusion tensor magnetic resonance imaging (DTI) provides a promising way of estimating the neural fiber pathways in the human brain non-invasively via white matter tractography. However, it is difficult to analyze the vast number of resulting tracts quantitatively. Automatic tract clustering would be useful for the neuroscience community, as it can contribute to accurate neurosurgical planning, tract-based analysis, or white matter atlas creation. In this paper, the authors propose a new framework for automatic white matter tract clustering using a hierarchical density-based approach. A nove
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19

Lin, H. Y., S. S. F. Gau, S. L. Huang-Gu, C. Y. Shang, Y. H. Wu, and W. Y. I. Tseng. "Neural substrates of behavioral variability in attention deficit hyperactivity disorder: based on ex-Gaussian reaction time distribution and diffusion spectrum imaging tractography." Psychological Medicine 44, no. 8 (2013): 1751–64. http://dx.doi.org/10.1017/s0033291713001955.

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BackgroundIncreased intra-individual variability (IIV) in reaction time (RT) across various tasks is one ubiquitous neuropsychological finding in attention deficit hyperactivity disorder (ADHD). However, neurobiological underpinnings of IIV in individuals with ADHD have not yet been fully delineated. The ex-Gaussian distribution has been proved to capture IIV in RT. The authors explored the three parameters [μ (mu), σ (sigma), τ (tau)] of an ex-Gaussian RT distribution derived from the Conners' continuous performance test (CCPT) and their correlations with the microstructural integrity of the
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20

Binding, Lawrence, Peter Taylor, Sallie Baxendale, et al. "Network changes predicting language decline following anterior temporal lobe resection." Journal of Neurology, Neurosurgery & Psychiatry 93, no. 9 (2022): e2.178. http://dx.doi.org/10.1136/jnnp-2022-abn2.32.

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Anterior temporal lobe resection (ATLR), while successful can result in lasting impairment of language function. White matter bundles have been shown to explain some of the variance seen in language decline after ATLR. Network analysis of the structural connectome has been shown superior in predicting preoperative language ability but remains unexplored in predicting postoperative ability.Diffusion MRI-based tractography was used to generate the preoperative connectome on 54 left-lat- eralised (as determined by functional MRI), left-hemisphere ATLR. Postoperative connectomes were estimated via
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21

Khalilian, Maedeh, Kamran Kazemi, Mahshid Fouladivanda, Malek Makki, Mohammad Sadegh Helfroush, and Ardalan Aarabi. "Effect of Multishell Diffusion MRI Acquisition Strategy and Parcellation Scale on Rich-Club Organization of Human Brain Structural Networks." Diagnostics 11, no. 6 (2021): 970. http://dx.doi.org/10.3390/diagnostics11060970.

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The majority of network studies of human brain structural connectivity are based on single-shell diffusion-weighted imaging (DWI) data. Recent advances in imaging hardware and software capabilities have made it possible to acquire multishell (b-values) high-quality data required for better characterization of white-matter crossing-fiber microstructures. The purpose of this study was to investigate the extent to which brain structural organization and network topology are affected by the choice of diffusion magnetic resonance imaging (MRI) acquisition strategy and parcellation scale. We perform
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22

Renauld, Emmanuelle, Antoine Théberge, Laurent Petit, Jean-Christophe Houde, and Maxime Descoteaux. "Validate your white matter tractography algorithms with a reappraised ISMRM 2015 Tractography Challenge scoring system." Scientific Reports 13, no. 1 (2023). http://dx.doi.org/10.1038/s41598-023-28560-w.

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AbstractSince 2015, research groups have sought to produce the ne plus ultra of tractography algorithms using the ISMRM 2015 Tractography Challenge as evaluation. In particular, since 2017, machine learning has made its entrance into the tractography world. The ISMRM 2015 Tractography Challenge is the most used phantom during tractography validation, although it contains limitations. Here, we offer a new scoring system for this phantom, where segmentation of the bundles is now based on manually defined regions of interest rather than on bundle recognition. Bundles are now more reliably segment
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Zhong, Shenjun, Zhaolin Chen, and Gary Egan. "Auto-encoded Latent Representations of White Matter Streamlines for Quantitative Distance Analysis." Neuroinformatics, June 22, 2022. http://dx.doi.org/10.1007/s12021-022-09593-4.

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AbstractParcellation of whole brain tractograms is a critical step to study brain white matter structures and connectivity patterns. The existing methods based on supervised classification of streamlines into predefined streamline bundle types are not designed to explore sub-bundle structures, and methods with manually designed features are expensive to compute streamline-wise similarities. To resolve these issues, we propose a novel atlas-free method that learns a latent space using a deep recurrent auto-encoder trained in an unsupervised manner. The method efficiently embeds any length of st
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Di Cristofori, Andrea, Gianpaolo Basso, Camilla de Laurentis, et al. "Perspectives on (A)symmetry of Arcuate Fasciculus. A Short Review About Anatomy, Tractography and TMS for Arcuate Fasciculus Reconstruction in Planning Surgery for Gliomas in Language Areas." Frontiers in Neurology 12 (February 10, 2021). http://dx.doi.org/10.3389/fneur.2021.639822.

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Gliomas are brain tumors that are treated with surgical resection. Prognosis is influenced by the extent of resection and postoperative neurological status. As consequence, given the extreme interindividual and interhemispheric variability of subcortical white matter (WM) surgical planning requires to be patient's tailored. According to the “connectionist model,” there is a huge variability among both cortical areas and subcortical WM in all human beings, and it is known that brain is able to reorganize itself and to adapt to WM lesions. Brain magnetic resonance imaging diffusion tensor imagin
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Zhylka, Andrey, Nico Sollmann, Florian Kofler, et al. "Tracking the Corticospinal Tract in Patients With High-Grade Glioma: Clinical Evaluation of Multi-Level Fiber Tracking and Comparison to Conventional Deterministic Approaches." Frontiers in Oncology 11 (December 14, 2021). http://dx.doi.org/10.3389/fonc.2021.761169.

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While the diagnosis of high-grade glioma (HGG) is still associated with a considerably poor prognosis, neurosurgical tumor resection provides an opportunity for prolonged survival and improved quality of life for affected patients. However, successful tumor resection is dependent on a proper surgical planning to avoid surgery-induced functional deficits whilst achieving a maximum extent of resection (EOR). With diffusion magnetic resonance imaging (MRI) providing insight into individual white matter neuroanatomy, the challenge remains to disentangle that information as correctly and as complet
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Zhang, J., K. Xia, M. Ahn, et al. "Genome-Wide Association Analysis of Neonatal White Matter Microstructure." Cerebral Cortex, October 3, 2020. http://dx.doi.org/10.1093/cercor/bhaa266.

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ABSTRACT A better understanding of genetic influences on early white matter development could significantly advance our understanding of neurological and psychiatric conditions characterized by altered integrity of axonal pathways. We conducted a genome-wide association study (GWAS) of diffusion tensor imaging (DTI) phenotypes in 471 neonates. We used a hierarchical functional principal regression model (HFPRM) to perform joint analysis of 44 fiber bundles. HFPRM revealed a latent measure of white matter microstructure that explained approximately 50% of variation in our tractography-based mea
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Hansen, Colin B., Qi Yang, Ilwoo Lyu, et al. "Pandora: 4-D White Matter Bundle Population-Based Atlases Derived from Diffusion MRI Fiber Tractography." Neuroinformatics, November 16, 2020. http://dx.doi.org/10.1007/s12021-020-09497-1.

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Goicovich, Isaac, Paulo Olivares, Claudio Román, et al. "Fiber Clustering Acceleration With a Modified Kmeans++ Algorithm Using Data Parallelism." Frontiers in Neuroinformatics 15 (September 1, 2021). http://dx.doi.org/10.3389/fninf.2021.727859.

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Fiber clustering methods are typically used in brain research to study the organization of white matter bundles from large diffusion MRI tractography datasets. These methods enable exploratory bundle inspection using visualization and other methods that require identifying brain white matter structures in individuals or a population. Some applications, such as real-time visualization and inter-subject clustering, need fast and high-quality intra-subject clustering algorithms. This work proposes a parallel algorithm using a General Purpose Graphics Processing Unit (GPGPU) for fiber clustering b
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Barakovic, Muhamed, Gabriel Girard, Simona Schiavi, et al. "Bundle-Specific Axon Diameter Index as a New Contrast to Differentiate White Matter Tracts." Frontiers in Neuroscience 15 (June 15, 2021). http://dx.doi.org/10.3389/fnins.2021.646034.

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In the central nervous system of primates, several pathways are characterized by different spectra of axon diameters. In vivo methods, based on diffusion-weighted magnetic resonance imaging, can provide axon diameter index estimates non-invasively. However, such methods report voxel-wise estimates, which vary from voxel-to-voxel for the same white matter bundle due to partial volume contributions from other pathways having different microstructure properties. Here, we propose a novel microstructure-informed tractography approach, COMMITAxSize, to resolve axon diameter index estimates at the st
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Wu, Yupeng, Dandan Sun, Yong Wang, Yibao Wang, and Shaowu Ou. "Segmentation of the Cingulum Bundle in the Human Brain: A New Perspective Based on DSI Tractography and Fiber Dissection Study." Frontiers in Neuroanatomy 10 (September 7, 2016). http://dx.doi.org/10.3389/fnana.2016.00084.

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Beyh, Ahmad, Flavio Dell’Acqua, Daniele Cancemi, Francisco De Santiago Requejo, Dominic ffytche, and Marco Catani. "The medial occipital longitudinal tract supports early stage encoding of visuospatial information." Communications Biology 5, no. 1 (2022). http://dx.doi.org/10.1038/s42003-022-03265-4.

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AbstractVisuospatial learning depends on the parahippocampal place area (PPA), a functionally heterogenous area which current visuospatial processing models place downstream from parietal cortex and only from area V4 of early visual cortex (EVC). However, evidence for anatomical connections between the PPA and other EVC areas is inconsistent, and these connections are not discussed in current models. Through a data-driven analysis based on diffusion MRI tractography, we present evidence that the PPA sits at the confluence of two white matter systems. The first conveys information from the retr
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Coenen, Volker A., Bastian E. A. Sajonz, Trevor A. Hurwitz, et al. "A Neuroanatomy of Positive Affect Display – Subcortical Fiber Pathways Relevant for Initiation and Modulation of Smiling and Laughing." Frontiers in Behavioral Neuroscience 16 (March 30, 2022). http://dx.doi.org/10.3389/fnbeh.2022.817554.

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BackgroundWe here report two cases of stimulation induced pathological laughter (PL) under thalamic deep brain stimulation (DBS) for essential tremor and interpret the effects based on a modified neuroanatomy of positive affect display (PAD).Objective/HypothesisThe hitherto existing neuroanatomy of PAD can be augmented with recently described parts of the motor medial forebrain bundle (motorMFB). We speculate that a co-stimulation of parts of this fiber structure might lead to a non-volitional modulation of PAD resulting in PL.MethodsWe describe the clinical and individual imaging workup and c
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Liang, Wenjia, Qiaowen Yu, Wenjun Wang, et al. "A comparative study of the superior longitudinal fasciculus subdivisions between neonates and young adults." Brain Structure and Function, September 17, 2022. http://dx.doi.org/10.1007/s00429-022-02565-z.

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AbstractThe superior longitudinal fasciculus (SLF) is a complex associative tract comprising three distinct subdivisions in the frontoparietal cortex, each of which has its own anatomical connectivity and functional roles. However, many studies on white matter development, hampered by limitations of data quality and tractography methods, treated the SLF as a single entity. The exact anatomical trajectory and developmental status of each sub-bundle of the human SLF in neonates remain poorly understood. Here, we compared the morphological and microstructural characteristics of each branch of the
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Basile, Gianpaolo Antonio, Marina Quartu, Salvatore Bertino, et al. "In vivo probabilistic atlas of white matter tracts of the human subthalamic area combining track density imaging and optimized diffusion tractography." Brain Structure and Function, September 17, 2022. http://dx.doi.org/10.1007/s00429-022-02561-3.

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AbstractThe human subthalamic area is a region of high anatomical complexity, tightly packed with tiny fiber bundles. Some of them, including the pallidothalamic, cerebello-thalamic, and mammillothalamic tracts, are relevant targets in functional neurosurgery for various brain diseases. Diffusion-weighted imaging-based tractography has been suggested as a useful tool to map white matter pathways in the human brain in vivo and non-invasively, though the reconstruction of these specific fiber bundles is challenging due to their small dimensions and complex anatomy. To the best of our knowledge,
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Decroocq, Méghane, Morgane Des Ligneris, Titouan Poquillon, et al. "Automation of Cranial Nerve Tractography by Filtering Tractograms for Skull Base Surgery." Frontiers in Neuroimaging 1 (March 29, 2022). http://dx.doi.org/10.3389/fnimg.2022.838483.

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Fiber tractography enables the in vivo reconstruction of white matter fibers in 3 dimensions using data collected by diffusion tensor imaging, thereby helping to understand functional neuroanatomy. In a pre-operative context, it provides essential information on the trajectory of fiber bundles of medical interest, such as cranial nerves. However, the optimization of tractography parameters is a time-consuming process and requires expert neuroanatomical knowledge, making the use of tractography difficult in clinical routine. Tractogram filtering is a method used to isolate the most relevant fib
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Theaud, Guillaume, Manon Edde, Matthieu Dumont, et al. "DORIS: A diffusion MRI-based 10 tissue class deep learning segmentation algorithm tailored to improve anatomically-constrained tractography." Frontiers in Neuroimaging 1 (September 22, 2022). http://dx.doi.org/10.3389/fnimg.2022.917806.

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Modern tractography algorithms such as anatomically-constrained tractography (ACT) are based on segmentation maps of white matter (WM), gray matter (GM), and cerebrospinal fluid (CSF). These maps are generally estimated from a T1-weighted (T1w) image and then registered in diffusion weighted images (DWI) space. Registration of T1w to diffusion space and partial volume estimation are challenging and rarely voxel-perfect. Diffusion-based segmentation would, thus, potentially allow not to have higher quality anatomical priors injected in the tractography process. On the other hand, even if FA-bas
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Reisch, Klara, Franziska Böttcher, Mehmet S. Tuncer, et al. "Tractography-based navigated TMS language mapping protocol." Frontiers in Oncology 12 (December 9, 2022). http://dx.doi.org/10.3389/fonc.2022.1008442.

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IntroductionThis study explores the feasibility of implementing a tractography-based navigated transcranial magnetic stimulation (nTMS) language mapping protocol targeting cortical terminations of the arcuate fasciculus (AF). We compared the results and distribution of errors from the new protocol to an established perisylvian nTMS protocol that stimulated without any specific targeting over the entire perisylvian cortex.MethodsSixty right-handed patients with language-eloquent brain tumors were examined in this study with one half of the cohort receiving the tractographybased protocol and the
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38

Yan, Mingchao, Wenwen Yu, Qian Lv, et al. "Mapping brain-wide excitatory projectome of primate prefrontal cortex at submicron resolution and comparison with diffusion tractography." eLife 11 (May 20, 2022). http://dx.doi.org/10.7554/elife.72534.

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Resolving trajectories of axonal pathways in the primate prefrontal cortex remains crucial to gain insights into higher-order processes of cognition and emotion, which requires a comprehensive map of axonal projections linking demarcated subdivisions of prefrontal cortex and the rest of brain. Here, we report a mesoscale excitatory projectome issued from the ventrolateral prefrontal cortex (vlPFC) to the entire macaque brain by using viral-based genetic axonal tracing in tandem with high-throughput serial two-photon tomography, which demonstrated prominent monosynaptic projections to other pre
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39

Wilde, Elisabeth A., Ilirjana Hyseni, Hannah M. Lindsey, et al. "A Preliminary DTI Tractography Study of Developmental Neuroplasticity 5–15 Years After Early Childhood Traumatic Brain Injury." Frontiers in Neurology 12 (December 23, 2021). http://dx.doi.org/10.3389/fneur.2021.734055.

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Plasticity is often implicated as a reparative mechanism when addressing structural and functional brain development in young children following traumatic brain injury (TBI); however, conventional imaging methods may not capture the complexities of post-trauma development. The present study examined the cingulum bundles and perforant pathways using diffusion tensor imaging (DTI) in 21 children and adolescents (ages 10–18 years) 5–15 years after sustaining early childhood TBI in comparison with 19 demographically-matched typically-developing children. Verbal memory and executive functioning wer
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40

Boukadi, Mariem, Karine Marcotte, Christophe Bedetti, et al. "Test-Retest Reliability of Diffusion Measures Extracted Along White Matter Language Fiber Bundles Using HARDI-Based Tractography." Frontiers in Neuroscience 12 (January 14, 2019). http://dx.doi.org/10.3389/fnins.2018.01055.

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41

Walker, Matthew R., Jidan Zhong, Adam C. Waspe, et al. "Peripheral Nerve Focused Ultrasound Lesioning—Visualization and Assessment Using Diffusion Weighted Imaging." Frontiers in Neurology 12 (July 9, 2021). http://dx.doi.org/10.3389/fneur.2021.673060.

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Objectives: Magnetic resonance-guided focused ultrasound (MRgFUS) is a non-invasive targeted tissue ablation technique that can be applied to the nervous system. Diffusion weighted imaging (DWI) can visualize and evaluate nervous system microstructure. Tractography algorithms can reconstruct fiber bundles which can be used for treatment navigation and diffusion tensor imaging (DTI) metrics permit the quantitative assessment of nerve microstructure in vivo. There is a need for imaging tools to aid in the visualization and quantitative assessment of treatment-related nerve changes in MRgFUS. We
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42

"Neurocircuitry of emotion and cognition in alcoholism: contributions from white matter fiber tractography." Neurocircuitry of Cognition, Emotion, and Behavior 12, no. 4 (2010): 554–60. http://dx.doi.org/10.31887/dcns.2010.12.4/tschulte.

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Chronic alcoholism is characterized by impaired control over emotionally motivated actions towards alcohol use. Neuropathologically, it is associated with widespread brain structural compromise marked by gray matter shrinkage, ventricular enlargement, and white matter degradation. The extent to which cortical damage itself or cortical disconnection by white matter fiber pathway disruption contribute to deficits in emotion, cognition, and behavior can be investigated with in vivo structural neuroimaging and diffusion tensor imaging (DTI)-based quantitative fiber tracking. Tractography in alcoho
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43

Hwang, Young-Eun, Young-Bo Kim, and Young-Don Son. "Finding Cortical Subregions Regarding the Dorsal Language Pathway Based on the Structural Connectivity." Frontiers in Human Neuroscience 16 (May 2, 2022). http://dx.doi.org/10.3389/fnhum.2022.784340.

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Although the language-related fiber pathways in the human brain, such as the superior longitudinal fasciculus (SLF) and arcuate fasciculus (AF), are already well-known, understanding more sophisticated cortical regions connected by the fiber tracts is essential to scrutinize the structural connectivity of language circuits. With the regions of interest that were selected based on the Brainnetome atlas, the fiber orientation distribution estimation method for tractography was used to produce further elaborate connectivity information. The results indicated that both fiber bundles had two distin
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44

Short, Sarah J., Dae Kun Jang, Rachel J. Steiner, et al. "Diffusion Tensor Based White Matter Tract Atlases for Pediatric Populations." Frontiers in Neuroscience 16 (March 23, 2022). http://dx.doi.org/10.3389/fnins.2022.806268.

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Diffusion Tensor Imaging (DTI) is a non-invasive neuroimaging method that has become the most widely employed MRI modality for investigations of white matter fiber pathways. DTI has proven especially valuable for improving our understanding of normative white matter maturation across the life span and has also been used to index clinical pathology and cognitive function. Despite its increasing popularity, especially in pediatric research, the majority of existing studies examining infant white matter maturation depend on regional or white matter skeleton-based approaches. These methods general
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45

Santos, Carlos, Carlos Velasquez, Jesus Esteban, et al. "Transopercular Insular Approach, Overcoming the Training Curve Using a Cadaveric Simulation Model: 2-Dimensional Operative Video." Operative Neurosurgery, September 24, 2021. http://dx.doi.org/10.1093/ons/opab342.

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Abstract Transopercular approach to the insula is indicated for resection of insular low-grade gliomas, particularly for Yasargil's 3B, 5A, and 5B types. Nevertheless, the infrequent location and its challenging approach make it difficult to master the surgery. Consequently, a realistic laboratory training model might help to acquire key surgical skills. In this video, we describe a cadaveric-based model simulating the resection of a temporo-insular low-grade glioma. Kingler's fixation technique was used to fix the cadaver head before injecting red and blue colorants for a realistic vascular a
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46

Liu, Yuchen, Chih-Chin Heather Hsu, Chu-Chung Huang, et al. "Connectivity-Based Topographical Changes of the Corpus Callosum During Aging." Frontiers in Aging Neuroscience 13 (October 20, 2021). http://dx.doi.org/10.3389/fnagi.2021.753236.

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Background: The corpus callosum (CC) is the most prominent white matter connection for interhemispheric information transfer. It is implicated in a variety of cognitive functions, which tend to decline with age. The region-specific projections of the fiber bundles with microstructural heterogeneity of the CC are associated with cognitive functions and diseases. However, how the CC is associated with the information transfer within functional networks and the connectivity changes during aging remain unclear. Studying the CC topography helps to understand the functional specialization and age-re
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47

Henriques, Rafael Neto, Marta M. Correia, Maurizio Marrale, et al. "Diffusional Kurtosis Imaging in the Diffusion Imaging in Python Project." Frontiers in Human Neuroscience 15 (July 19, 2021). http://dx.doi.org/10.3389/fnhum.2021.675433.

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Diffusion-weighted magnetic resonance imaging (dMRI) measurements and models provide information about brain connectivity and are sensitive to the physical properties of tissue microstructure. Diffusional Kurtosis Imaging (DKI) quantifies the degree of non-Gaussian diffusion in biological tissue from dMRI. These estimates are of interest because they were shown to be more sensitive to microstructural alterations in health and diseases than measures based on the total anisotropy of diffusion which are highly confounded by tissue dispersion and fiber crossings. In this work, we implemented DKI i
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48

Lenga, Pavlina, Moritz Scherer, Peter Neher, et al. "Tensor- and high-resolution fiber tractography for the delineation of the optic radiation and corticospinal tract in the proximity of intracerebral lesions: a reproducibility and repeatability study." Acta Neurochirurgica, March 2, 2023. http://dx.doi.org/10.1007/s00701-023-05540-7.

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Abstract Purpose Fiber tracking (FT) is used in neurosurgical planning for the resection of lesions in proximity to fiber pathways, as it contributes to a substantial amelioration of postoperative neurological impairments. Currently, diffusion-tensor imaging (DTI)-based FT is the most frequently used technique; however, sophisticated techniques such as Q-ball (QBI) for high-resolution FT (HRFT) have suggested favorable results. Little is known about the reproducibility of both techniques in the clinical setting. Therefore, this study aimed to examine the intra- and interrater agreement for the
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