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Meike Weis, Thomas Henzler, John W Nance, Holger Haubenreisser, Mathias Meyer, Sonja Sudarski, Stefan O Schoenberg, K Wolfgang Neff, Claudia Hagelstein
OBJECTIVE: The aim of this prospective randomized controlled study was to compare 2 techniques for radiation dose reduction in non-contrast-enhanced pediatric chest computed tomography (CT): low peak kilovoltage imaging at 70 kVp and spectral beam shaping at 100 kVp using a dedicated tin filter (100-kVp Sn). MATERIALS AND METHODS: All chest CT examinations were performed on a third-generation dual-source CT system (SOMATOM Force; Siemens Healthineers, Germany). Fifty children (mean age, 6...
September 22, 2016: Investigative Radiology
J Gawlitza, H Haubenreisser, M Meyer, C Hagelstein, S Sudarski, S O Schoenberg, T Henzler
PURPOSE: The aim of this study was to systematically compare organ-specific-radiation dose levels between a radiation dose optimized perfusion CT (dVPCT) protocol of the liver and a tri-phasic standard CT protocol of the liver using a Monte-Carlo-Simulation-based analysis platform. METHODS AND MATERIALS: The complete CT data of 52 patients (41 males; mean age 65 ± 12) with suspected HCC that underwent dVPCT examinations on a 3rd generation dual-source CT (Somatom Force, Siemens) with a dose optimized tube voltage of 70 kVp or 80 kVp were exported to an analysis platform (Radimetrics, Bayer)...
2016: European Journal of Radiology Open
Ruba Kado, Emily Siegwald, Emily Lewis, Mitchell M Goodsitt, Emmanuel Christodoulou, Ella Kazerooni, W Joseph McCune
OBJECTIVE: Systemic lupus erythematosus patients are frequently evaluated for chest pain and may have multiple pulmonary embolism (PE) computed tomography (CT) scans. This study was undertaken to determine the incidence of pulmonary embolism in the University of Michigan Lupus Cohort patients who have undergone PE CT scans and to estimate the associated increased risk of breast and lung cancer from radiation exposure. METHODS: We reviewed records of patients in the University of Michigan Lupus Cohort (n = 854) and determined the number and outcome of PE CT scans...
March 2016: Arthritis Care & Research
R Ia Maslovskií, A I Mamin
No abstract text is available yet for this article.
October 1974: Gigiena i Sanitariia
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