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Dementia Care Practice.
Alzheimers Dement
December 2024
VA Boston Healthcare System, Jamaica Plain, MA, USA.
Background: Mixed dementia type - Alzheimer's Disease (AD), cerebral amyloid angiopathy (CAA), and vascular - is vastly recognized as a cause of dementia in older adults. Whereas CAA, primarily leptomeningeal, is a frequent complication in hereditary transthyretin cardiac amyloidosis (TTRCA), it is unusually reported in association with wild-type TTR, with or without polyneuropathy. The knowledge of mixed dementia and wild-type TTR association is even scarcer.
View Article and Find Full Text PDFHigh incidence of radiation-induced brain necrosis in the periventricular deep white matter: stereotactic radiotherapy for brain metastases using volumetric modulated arc therapy.
Radiat Oncol
January 2025
Department of Neurosurgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan.
Purpose: In this retrospective study, we aimed to evaluate the efficacy and incidence of radiation-induced brain necrosis (RBN) after volumetric modulated arc therapy-based stereotactic irradiation (VMAT-STI) for brain metastases.
Methods: In the 220 brain metastatic lesions included between January 2020 and June 2022, there were 1-9 concurrently treated lesions (median 1). A biologically effective dose (BED)10 of 80 Gy and a reduced BED10 of 50 Gy were prescribed to the gross tumor volume (GTV) and planning target volume (PTV) (PTV = GTV + 3 mm) margins, respectively.
Automated Quantification of Axonal and Myelin Changes in Contusion, Dislocation, and Distraction Spinal Cord Injuries: Insights into Targeted Remyelination and Axonal Regeneration.
Brain Res Bull
January 2025
Key Laboratory of Biomechanics and Mechanobiology, Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University - Yifu Science Hall, 37 Xueyuan Road, Haidian, Beijing, 100191, China. Electronic address:
Quantifying axons and myelin is essential for understanding spinal cord injury (SCI) mechanisms and developing targeted therapies. This study proposes and validates an automated method to measure axons and myelin, applied to compare contusion, dislocation, and distraction SCIs in a rat model. Spinal cords were processed and stained for neurofilament, tubulin, and myelin basic protein, with histology images segmented into dorsal, lateral, and ventral white matter regions.
View Article and Find Full Text PDFAn objective quantitative diagnosis of depression using a local-to-global multimodal fusion graph neural network.
Patterns (N Y)
December 2024
Medical Robot Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
This study developed an artificial intelligence (AI) system using a local-global multimodal fusion graph neural network (LGMF-GNN) to address the challenge of diagnosing major depressive disorder (MDD), a complex disease influenced by social, psychological, and biological factors. Utilizing functional MRI, structural MRI, and electronic health records, the system offers an objective diagnostic method by integrating individual brain regions and population data. Tested across cohorts from China, Japan, and Russia with 1,182 healthy controls and 1,260 MDD patients from 24 institutions, it achieved a classification accuracy of 78.
View Article and Find Full Text PDFPeriventricular Nodular Heterotopias Induced-Seizures in an Adolescent.
Cureus
December 2024
Pediatrics, Unidade Local de Saúde do Algarve-Hospital de Faro, Faro, PRT.
A female adolescent with no relevant past history was admitted to the Pediatric Emergency Department with two episodes of seizures without trauma, fever, or other symptoms. Head-MRI revealed bilateral subependymal nodular irregularities lining the lateral ventricles, with similar signal evolution to grey matter, confirming the diagnosis of periventricular nodular heterotopias (PVNH). Genetic testing revealed a Filamin A ( variant; family studies were negative.
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