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Assessment of a New CT Detector and Filtration Technology: Part 2-Image Quality in Phantoms, Cadavers, and Patients.
J Comput Assist Tomogr
January 2025
Department of Radiology, College of Medicine, University of Florida, Gainesville, FL.
Purpose: The purpose of this work was to evaluate the image quality of a commercial CT scanner equipped with a novel detector and filtration technology called PureVision Optics (PVO).
Methods: CT number, noise, contrast-to-noise ratio (CNR), modulation transfer function (MTF), and noise power spectrum (NPS) were assessed using the ACR CT Accreditation phantom scanned with various acquisitions at 80 kV, 100 kV, 120 kV, and 135 kV, each with multiple CTDIvol values of 20 mGy, 40 mGy, and 65 mGy. Artifacts were evaluated in an anthropomorphic head phantom, a cadaver head, and in patient studies.
Variations in the Terminal Branches of the Brachial Plexus in the Axillary Fossa.
Biomed Res Int
January 2025
Department of Maxillofacial Surgery, University Hospital "Medika", Ruse, Bulgaria.
The brachial plexus is the primary nerve source for the upper limb. Variations in its anatomy can alter the nerve supply to the upper extremity. Such deviations are clinically important, as they can change the symptomatology of various pathologic conditions, leading to misdiagnosis, inadequate treatment, and surgical failures as a consequence.
View Article and Find Full Text PDFA novel POT1-TPD presentation: A germline pathogenic POT1 variant discovered in a patient with newly diagnosed posterior fossa ependymoma.
Cancer Genet
January 2025
Cincinnati Children's Hospital Medical Center, Division of Oncology, Cincinnati, OH, USA; University of Cincinnati College of Medicine, Cincinnati, OH, USA. Electronic address:
Introduction: POT1 tumor predisposition (POT1-TPD) is an autosomal dominant disorder characterized by increased lifetime malignancy risk. Melanoma, angiosarcoma, and chronic lymphocytic leukemia are the most frequently reported malignancies [1]. Protection of telomeres protein 1 (POT1) is part of the shelterin protein complex to maintain/protect telomeres [2].
View Article and Find Full Text PDFPosterior Fossa Stereotactic Biopsy with Leksell Vantage Frame-Case Series and Review of Literature.
J Clin Med
January 2025
Department of Neurosurgery, University Medical Centre Maribor, 2000 Maribor, Slovenia.
Stereotactic biopsy of posterior fossa lesions, which are often inoperable, enables a safe trajectory and provides tissue samples for accurate diagnosis, which is crucial for correct treatment since the latest World Health Organization Classification of Tumors of the Central Nervous System from 2021 places immense emphasis on molecular diagnostics. Stereotactic biopsy using the Leksell Vantage headframe is, due to its rigid design, extremely accurate, but stiffer, making the procedure more challenging and the learning curve steeper. This retrospective analysis demonstrates the introduction of the new Leksell Vantage headframe in day-to-day practice at the University Medical Center in Maribor, Slovenia, in demanding procedures of posterior fossa biopsies, and also provides a review of the literature available on the topic with emphasis on the technical aspect of posterior fossa biopsy using the Leksell Vantage headframe in adults.
View Article and Find Full Text PDFClinically oriented automatic three-dimensional enamel segmentation via deep learning.
BMC Oral Health
January 2025
Center of Digital Dentistry, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, No.22, Zhongguancun South Avenue, Haidian District, Beijing, 100081, PR China.
Background: Establishing accurate, reliable, and convenient methods for enamel segmentation and analysis is crucial for effectively planning endodontic, orthodontic, and restorative treatments, as well as exploring the evolutionary patterns of mammals. However, no mature, non-destructive method currently exists in clinical dentistry to quickly, accurately, and comprehensively assess the integrity and thickness of enamel chair-side. This study aims to develop a deep learning work, 2.
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