Browsing by Author "Gray, Benjamin R."

Now showing 1 - 3 of 3
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    Maximizing Radiologist Productivity: The Panopticon
    (Elsevier, 2016-02) Gunderman, Richard B.; Gray, Benjamin R.; Department of Radiology and Imaging Sciences, IU School of Medicine
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    Normal Patterns and Pitfalls of FDG Uptake in the Head and Neck
    (Elsevier, 2019) Gray, Benjamin R.; Koontz, Nicholas A.; Radiology and Imaging Sciences, School of Medicine
    In order to avoid misdiagnoses, medical imagers should be familiar with the normal patterns and distribution of fluorodeoxyglucose (FDG) activity within the head and neck, as well as the pathophysiology and imaging-findings of common diagnostic pitfalls related to incidental FDG-avid lesions. The purpose of this article is to provide an image-rich review of the normal patterns of FDG uptake in the head and neck, help differentiate benign from malignant incidentally found FDG-avid foci, and detail important “don't miss” hypometabolic head and neck lesions on positron emission tomography/computed tomography and positron emission tomography/magnetic resonance imaging.
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    PET and SPECT Imaging of Brain Neoplasia Mimics
    (Elsevier, 2020-12) Gray, Benjamin R.; Agarwal, Atul; Tann, Mark; Koontz, Nicholas A.; Radiology and Imaging Sciences, School of Medicine
    Several non-neoplastic processes, including infection, inflammation, demyelination, vasculitis, autoimmune disease, and post-treatment changes (radiation therapy or chemoradiation) can result in a mass-like, space-occupying lesion on conventional computed tomography (CT) or magnetic resonance (MR) imaging of the brain. Additionally, non-neoplastic processes can produce imaging findings that mimic nontumoral neoplastic involvement of the central nervous system. Such instances pose a substantial diagnostic dilemma for interpreting radiologists, as well as clinicians tasked with determining the appropriate diagnostic tests and therapeutic strategies for these patients. Nuclear medicine studies, including single positron emission computed tomography (SPECT) and positron emission tomography (PET), as well as hybrid SPECT/CT, PET/CT, and PET/MRI may offer important diagnostic insights into these challenging cases, often helping to differentiate these mimics from true brain neoplasms. In this review, we detail common and uncommon brain tumor mimics in specific context of PET and SPECT imaging of the brain, including the multimodality imaging appearance of tumor mimics and the potential roles these modalities may play in providing diagnostic clarity.