Nikolay Yefremov

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UNLABELLED Precise PET/CT localization of focal (18)F-FDG uptake in the gastrointestinal tract (GIT) may exclude malignancy in sites of physiologic activity but may also induce false-negative reports for malignant or premalignant lesions. The purpose of the present study was to retrospectively evaluate the nature and significance of unexpected focal(More)
UNLABELLED The present study evaluated the role of SPECT/CT as an adjunct to (67)Ga (GS) or (111)In-labeled white blood cell (WBC) scintigraphy for diagnosis or localization of infection. METHODS Eighty-two patients (56 male and 26 female; mean age, 62 y) assessed for known or suspected infectious processes underwent 88 SPECT/CT studies. Forty-seven(More)
OBJECTIVE The purpose of this article is to illustrate the spectrum of common benign intraarticular and extraarticular disorders associated with focal (18)F-FDG uptake in the shoulder and pelvic areas in oncology patients referred for PET/CT. CONCLUSION A wide spectrum of benign musculoskeletal disorders associated with focal FDG uptake may be detected in(More)
OBJECTIVES The objectives of this study were to assess the value of F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) in patients with carcinoma of the larynx as compared with PET and CT alone and to assess the impact of PET/CT on further clinical management. STUDY DESIGN This was a prospective, nonrandomized study. (More)
OBJECTIVE Thrombotic disorders detected on PET/CT are usually incidental findings and may change the treatment strategy and patient's disease prognosis. The purpose of this article is to present the spectrum of venous thrombotic disorders found on PET/CT. CONCLUSION The division of thrombotic disorders into metabolically nonactive and active thrombus may(More)
PURPOSE To prospectively determine whether fluorine 18 fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT) early dynamic blood flow estimates could be used to discriminate hepatocellular carcinoma (HCC) from background liver and to characterize HCC in patients with and those without angioinvasion; and to evaluate the(More)
AIM To determine the effect of low tube voltage on positron-emission tomography (PET) image quality, quantitative analysis, and radiation dose in a combined PET/computed tomography (CT) study in patients with normal body mass index (BMI). MATERIALS AND METHODS One hundred and twenty-nine examinations performed in 46 patients (mean age 57 years), who had(More)
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