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Hum Brain Mapp
September 2025
Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
Perinatal stroke is a vascular injury occurring early in life, often resulting in motor deficits (hemiplegic cerebral palsy/HCP). Comorbidities may also include poor neuropsychological outcomes, such as deficits in memory. Previous studies have used resting state functional MRI (fMRI) to demonstrate that functional connectivity (FC) within hippocampal circuits is associated with memory function in typically developing controls (TDC) and in adults after stroke, but this is unexplored in perinatal stroke.
View Article and Find Full Text PDFAm Surg
August 2025
Department of Surgery, University of Tennessee College of Medicine Chattanooga, TN, USA.
Chordomas are a rare malignancy of the axial spine arising from primitive notochordal cells. Optimal management entails en bloc resection with negative margins, with some evidence to support adjuvant radiotherapy. Failure to achieve adequate margins has been shown to result in a higher rate of recurrence.
View Article and Find Full Text PDFDiagnostics (Basel)
August 2025
Oral and Maxilofacial Surgery University Clinic, Dental School, National and Kapodistrian University of Athens, Evangelismos General Hospital, 10676 Athens, Greece.
Intraosseous hemangiomas (IH) are rare intrabony lesions that represent less than 1% of intraosseous tumors. IH are mostly seen in the axial skeleton and skull. Most commonly, the frontal bone, zygomatic, sphenoid, maxilla, ethmoid, and lacrimal bone can manifest IH.
View Article and Find Full Text PDFPediatr Radiol
August 2025
Riley Hospital for Children at IU Health, Department of Radiology and Imaging Sciences, Indiana University School of Medicine, 705 Riley Hospital Drive, Indianapolis, IN, 46202, USA.
Background: Costochondral junction fractures are considered specific for child abuse and typically heal with a deformed costochondral junction.
Objective: To evaluate the types, location, and incidence of costochondral junction variations that can mimic fractures.
Materials And Methods: A 15-year retrospective study was conducted on children under 2 years of age who underwent chest and abdominal computerized tomography (CT) scans for pneumonia, fever, congenital lung disease, pain, or appendicitis.
Sci Rep
July 2025
National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan.
The mathematical framework used to address the geometrically non-conjugate gear tooth contact problem in three-dimensional space represents a sophisticated task that requires substantial computational resources. The conventional approach to tooth contact analysis (TCA), involving five non-linear equations with five unknown parameters, uses an implicit model where convergence cannot be guaranteed. In recent years, researchers have proposed several new methods for analyzing gear tooth contact, offering more efficient alternatives to the conventional TCA model.
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