Article
Clinical Neurology
Thomas Jacquemont, Romain Valabregue, Lina Daghsen, Eric Moulton, Chiara Zavanone, Jean Charles Lamy, Charlotte Rosso
Summary: This study aimed to investigate the interaction between the central and frontal lobes of the brain and its relation to motor recovery in stroke patients. The results showed that white matter integrity is related to motor recovery, but does not significantly impact motor outcome.
FRONTIERS IN NEUROLOGY
(2023)
Article
Computer Science, Artificial Intelligence
Alexis Reymbaut, Alex Valcourt Caron, Guillaume Gilbert, Filip Szczepankiewicz, Markus Nilsson, Simon K. Warfield, Maxime Descoteaux, Benoit Scherrer
Summary: Diffusion tensor imaging provides increased sensitivity to microstructural tissue changes compared to conventional anatomical imaging, but presents limited specificity. To address this issue, the DIAMOND model subdivides voxel content into diffusion compartments and estimates compartmental non-central matrix-variate Gamma distributions of diffusion tensors. Incorporating tensor-valued diffusion encoding, the Magic DIAMOND model demonstrates improved accuracy in estimating brain microstructural features, particularly in regions of fiber crossing.
MEDICAL IMAGE ANALYSIS
(2021)
Article
Medicine, General & Internal
Sung Ho Jang, Jeong Pyo Seo, Young Hyeon Kwon
Summary: A patient's arcuate fasciculus and corticobulbar tract recovered following an infarct in the middle cerebral artery territory, as shown on serial diffusion tensor tractography. Initially, the patient exhibited moderate conduction aphasia, but there was improvement at 10 months. The results suggest a potential recovery mechanism for these tracts in stroke patients.
Article
Neurosciences
Sara Kieronska, Milena Switonska, Grzegorz Meder, Magdalena Piotrowska, Pawel Sokal
Summary: Through the use of DTI, this study was able to observe improvements in aphasia symptoms in a patient following a stroke, which were associated with changes in both the volume and fiber numbers of the uncinate fasciculus and arcuate fasciculus.
Article
Anatomy & Morphology
Wenjia Liang, Qiaowen Yu, Wenjun Wang, Thijs Dhollander, Emmanuel Suluba, Zhuoran Li, Feifei Xu, Yang Hu, Yuchun Tang, Shuwei Liu
Summary: This study compared the morphological and microstructural characteristics of each branch of the superior longitudinal fasciculus (SLF) in neonates and adults, using diffusion MRI data. The findings showed similar fiber morphology and connectivity in the SLF branches (excluding SLF II) between the neonatal and adult groups. The Mahalanobis distance values supported the idea of heterogeneous maturation among the SLF branches, with SLF II being the least mature.
BRAIN STRUCTURE & FUNCTION
(2022)
Article
Medicine, General & Internal
Anna Michalczyk, Ernest Tyburski, Piotr Podwalski, Katarzyna Waszczuk, Krzysztof Rudkowski, Jolanta Kucharska-Mazur, Monika Mak, Katarzyna Rek-Owodzin, Piotr Plichta, Maksymilian Bielecki, Wojciech Andrusewicz, Elzbieta Cecerska-Heryc, Agnieszka Samochowiec, Blazej Misiak, Leszek Sagan, Jerzy Samochowiec
Summary: Chronic subclinical inflammation is believed to play a role in schizophrenia. This study investigated the correlation between peripheral inflammatory markers (IM) levels and the integrity of brain regions in different stages of schizophrenia. The study did not find any correlations between IM levels and integrity of specific brain regions in schizophrenia spectrum disorders.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Neurosciences
Min Jye Cho, Sung Ho Jang
Summary: In patients with putaminal hemorrhage, language ability is closely related to the severity of arcuate fasciculus injury and lesion volume, with the volume of the arcuate fasciculus fully mediating the impact of lesion volume on language ability. The area under the receiver operating characteristic curve was higher for lesion volume compared to fractional anisotropy, tract volume, and aphasia quotient cutoff values.
JOURNAL OF INTEGRATIVE NEUROSCIENCE
(2021)
Article
Neurosciences
Mengjun Li, Fang-Cheng Yeh, Qingrun Zeng, Xiaolong Wu, Xu Wang, Zixin Zhu, Xiaohai Liu, Jiantao Liang, Ge Chen, Hongqi Zhang, Yuanjing Feng, Mingchu Li
Summary: The study investigated the trajectory of the medial longitudinal fasciculus (MLF) and its anatomical relationship with the oculomotor nerve using tractography technique. The protocol was tested on various subjects and patients, revealing the displacement of MLF in BCM patients and changes in QA, RDI, and FA. The reconstruction of MLF and oculomotor nerve was successfully visualized and validated with the GQI-based tractography technique.
HUMAN BRAIN MAPPING
(2021)
Article
Clinical Neurology
Tsukasa Koike, Shota Tanaka, Taichi Kin, Yuichi Suzuki, Shunsaku Takayanagi, Hirokazu Takami, Kazuha Kugasawa, Shohei Nambu, Takaki Omura, Erika Yamazawa, Yoshihiro Kushihara, Yasuyuki Furuta, Ryoko Niwa, Katsuya Sato, Tatsuya Uchida, Yasuhiro Takeda, Satoshi Kiyofuji, Toki Saito, Hiroshi Oyama, Nobuhito Saito
Summary: This study compared the reliability of DTT and QBT in predicting the distribution of cortical functional domains, showing that QBT had significantly better sensitivity and lower false-positive rate than DTT in the pars opercularis, with the same trend observed in other gyri. QBT is more reliable in identifying the motor speech area and may be clinically useful in brain tumor surgery.
WORLD NEUROSURGERY
(2022)
Review
Anatomy & Morphology
Joao Vitor Miranda Porto de Oliveira, Antonio Felipe Raquelo-Menegassio, Igor Lima Maldonado
Summary: Studies on the superior longitudinal fasciculus (SLF) have increased in recent years due to methodological advances, but the lack of a standardized nomenclature continues to cause confusion. Different methods have been used for tract designation, resulting in a lack of consensus in naming conventions. In clinical practice, vigilance is required when communicating due to the partial correspondence among available nomenclatures.
Article
Medicine, General & Internal
Jeong Pyo Seo, Dong Kyun Koo
Summary: This study used diffusion tensor tractography to investigate the effects of middle cerebral artery infarction on the nigrostriatal tract (NST). The results showed that infarction can lead to damage to the ipsilesional NST, impairing one's ability to control unwanted muscular contractions or voluntary movement.
Article
Orthopedics
Qi Zhao, Rees P. Ridout, Jikai Shen, Nian Wang
Summary: The study found that the direction and strength of diffusion gradients have significant influences on diffusion tensor imaging and fiber tracking in various connective tissues of the knee joint. Ligaments showed higher FA values compared to other tissues, while MD was less sensitive to angular resolution. Fiber tracking failed at low angular resolution or high b values, and measurements of fiber length and volume were highly dependent on angular resolution and b value.
Article
Behavioral Sciences
Kaoru Amemiya, Eiichi Naito, Hiromasa Takemura
Summary: The study revealed that the age dependency and lateralization properties of SLF branches are heterogeneous, suggesting that they are regulated by distinct developmental and aging processes.
Article
Clinical Neurology
Zehao Zhao, Chu-Chung Huang, Shiwen Yuan, Jie Zhang, Ching-Po Lin, Junfeng Lu, Hugues Duffau, Jinsong Wu
Summary: This study aimed to determine the relationship between the anterior terminations of the arcuate fasciculus (AF) and third branch of the superior longitudinal fasciculus (SLF-III) and the speech arrest sites induced by intraoperative direct cortical electrical stimulation (DCS). The results showed that the speech arrest sites were consistently associated with SLF-III anterior terminations and moderately associated with AF and AF/SLF-III complex terminations. The terminations of AF and SLF-III in healthy participants converged onto the ventral precentral gyrus anterior bank (vPCGa) and were able to predict the DCS speech output area.
JOURNAL OF NEUROSURGERY
(2023)
Editorial Material
Medicine, General & Internal
Giulio Vara, Gianmarco Tuzzato, Giuseppe Bianchi, Marco Miceli, Luca Spinardi, Rita Golfieri, Raffaella Rinaldi, Giancarlo Facchini
Summary: Brachial plexus injuries are commonly diagnosed clinically, and diffusion tensor imaging (DTI) shows promise in studying peripheral nerves. Deterministic fiber tracking and multishell acquisition are novel advances in the field.