The aim of this study was to evaluate the feasibility of using a machine learning approach based on diffusion tensor imaging (DTI) to identify patients with juvenile myoclonic epilepsy. We analyzed the usefulness of combining conventional DTI measures and structural connectomic profiles. This retrospective study was conducted at a tertiary hospital. We enrolled 55 patients with juvenile myoclonic epilepsy. All of the subjects underwent DTI from January 2017 to March 2020. We also enrolled 58 healthy subjects as a normal control group. We extracted conventional DTI measures and structural connectomic DTI profiles. We employed the support vector machines (SVM) algorithm to classify patients with juvenile myoclonic epilepsy and healthy subjects based on the conventional DTI measures and structural connectomic profiles. The SVM classifier based on conventional DTI measures had an accuracy of 68.1% and an area under the curve (AUC) of 0.682. Another SVM classifier based on the structural connectomic profiles demonstrated an accuracy of 72.7% and an AUC of 0.727. The SVM classifier based on combining the conventional DTI measures and structural connectomic profiles had an accuracy of 81.8% and an AUC of 0.818. DTI using machine learning is useful for classifying patients with juvenile myoclonic epilepsy and healthy subjects. Combining both the conventional DTI measures and structural connectomic profiles results in a better classification performance than using conventional DTI measures or the structural connectomic profiles alone to identify juvenile myoclonic epilepsy.
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http://dx.doi.org/10.1016/j.jocn.2021.07.035 | DOI Listing |
Neuro Oncol
December 2024
Department of Imaging and Pathology, KU Leuven, Leuven, Belgium.
Background: Hippocampal avoidance during prophylactic cranial irradiation (HA-PCI) is proposed to reduce neurocognitive decline, while preserving the benefits of PCI. We evaluated whether (HA-)PCI induces changes in white matter (WM) microstructure and whether sparing the hippocampus has an impact on preserving brain network topology. Additionally, we evaluated associations between topological metrics with hippocampal volume and neuropsychological outcomes.
View Article and Find Full Text PDFBrain Commun
November 2024
Department of Clinical Sciences, Diagnostic Radiology, Medical Faculty, Lund University, 221 85 Lund, Sweden.
Non-invasive evaluation of glymphatic function has emerged as a crucial goal in neuroimaging, and diffusion tensor imaging along the perivascular space (DTI-ALPS) has emerged as a candidate method for this purpose. Reduced ALPS index has been suggested to indicate impaired glymphatic function. However, the potential impact of crossing fibres on the ALPS index has not been assessed, which was the aim of this cross-sectional study.
View Article and Find Full Text PDFPediatr Neurol
November 2024
Department of Radiology Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, China. Electronic address:
Background: There are no apparent distinctions in clinical presentation or conventional imaging findings between brainstem gliomas and embryonal tumors occurring in the brainstem. Our aim was to study the role of diffusion tensor imaging in differentiating embryonal tumors from gliomas of the brainstem.
Methods: Three cases of embryonal tumors occurring in the brainstem and 19 cases of brainstem gliomas were analyzed retrospectively.
Magn Reson Imaging
December 2024
Department of Electrical and Computer Engineering, University of Arizona, Tucson, AZ 85721, United States of America; Department of Biomedical Engineering, University of Arizona, Tucson, AZ 85724, United States of America; Department of Medical Imaging, University of Arizona, Tucson, AZ 85724, United States of America; Program in Applied Mathematics, University of Arizona, Tucson, AZ 85724, United States of America. Electronic address:
Purpose: The purpose of this study was to develop DiffDL, a generative diffusion probabilistic model designed to produce high-quality diffusion tensor imaging (DTI) and diffusion kurtosis imaging (DKI) metrics from a reduced set of diffusion-weighted images (DWIs). This model addresses the challenge of prolonged data acquisition times in diffusion MRI while preserving metric accuracy.
Methods: DiffDL was trained using data from the Human Connectome Project, including 300 training/validation subjects and 50 testing subjects.
J Neuroimaging
December 2024
Cambridge Brain Tumour Imaging Laboratory, Division of Neurosurgery, Department of Clinical Neurosciences, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK.
Background And Purpose: Despite multimodal treatment of glioblastoma (GBM), recurrence beyond the initial tumor volume is inevitable. Moreover, conventional MRI has shortcomings that hinder the early detection of occult white matter tract infiltration by tumor, but diffusion tensor imaging (DTI) is a sensitive probe for assessing microstructural changes, facilitating the identification of progression before standard imaging. This sensitivity makes DTI a valuable tool for predicting recurrence.
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