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Deep Learning-Based Precontrast CT Parcellation for MRI-Free Brain Amyloid PET Quantification.
Clin Nucl Med
January 2025
Department of Nuclear Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
Purpose: This study aimed to develop a deep learning (DL) model for brain region parcellation using CT data from PET/CT scans to enable accurate amyloid quantification in 18F-FBB PET/CT without relying on high-resolution MRI.
Patients And Methods: A retrospective dataset of PET/CT and T1-weighted MRI pairs from 226 individuals (157 with mild cognitive impairment or dementia and 69 healthy controls) was used. The dataset was split into training/validation (60%) and test (40%) sets.
Which combination of medical expulsive therapy is more effective for treatment of distal ureteral stone in adults? A systematic review and network meta-analysis.
BMC Urol
January 2025
Urology and Nephrology Research Center (UNRC), Research Institute for Urology and Nephrology, Center of Excellence in Urology, Shahid Labbafinejad Hospital, Shahid Beheshti University of Medical Sciences (SBMU), Tehran, Iran.
Background: Medical Expulsive Therapy (MET) has been recommended as an established modality for the treatment of distal ureteral stones due to its clearance rate, pain control, and patient satisfaction while having minimal morbidity in comparison to other urologic interventions. In some studies, a combination of medications has been used, which we assessed in this network meta-analysis (NMA).
Methods: We conducted systematic searches in PubMed, Scopus, and Web of Science to identify relevant trials published between 2001 and 2024.
Cognitive dysfunction in systemic lupus erythematosus: Its relationship with intracerebral volumes and antiphospholipid antibody profile. Case series.
Med Clin (Barc)
January 2025
Fundación Valle del Lili, Departamento de Radiología, Cali, Colombia.
Introduction: The incidence of cognitive compromise in systemic lupus erythematosus is variable; it presents early and is usually asymptomatic. Our study evaluated the frequency of cognitive impairment in patients without a previous diagnosis of neuropsychiatric lupus and compared the differences in intracerebral size in subgroups with cognitive alterations and positive autoantibodies.
Methods: This is a cross-sectional study.
Impact of segment length on bony changes following microvascular jaw reconstruction using virtually planned fibula flaps - A retrospective study.
J Craniomaxillofac Surg
January 2025
Department of Oral- and Maxillofacial Surgery, University Hospital RWTH Aachen, Pauwelsstraße 30, Germany.
Postoperative bone resorption within the first year after a free fibular flap is a common problem and poses major challenges for subsequent therapies. Due to the concerns of increased bone resorption, short segments in particular, i.e.
View Article and Find Full Text PDFApplication value of split-bolus contrast injection combined with dual-energy CT scanning technology in pediatric CTU imaging.
Eur J Radiol
January 2025
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, Chongqing Key Laboratory of Child Neurodevelopment and Cognitive Disorders, China. Electronic address:
Objective: To explore the clinical value of combining split-bolus contrast injection with dual-energy CT(DECT) scanning technology in pediatric computed tomography urography (CTU) imaging.
Methods: A total of 128 children aged 0-17 years were prospectively selected and randomly assigned to three groups: A, B, and C. For Group A, a high-pitch flash mode was employed, where a single bolus of contrast agent was followed by four-phase scanning (noncontrast, cortex, medulla, and excretory phases).
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