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Radiation Exposure of Patients Undergoing Whole-Body Dual-Modality ¹⁸F-FDG PET/CT Examinations

¹ Division of Medical Radiation Hygiene and Dosimetry, Federal Office for Radiation Protection, Neuherberg, Germany
² Department of Nuclear Medicine, University of Ulm, Ulm, Germany
³ Department of Nuclear Medicine, Technical University Munich, Munich, Germany
⁴ Department of Nuclear Medicine, University of Munich, Munich, Germany
⁵ Department of Nuclear Medicine, University Hospital Essen, Essen, Germany

View larger version (16K): [in a new window]   FIGURE 1. CT dose coefficients TCT for some representative organs. Symbols give dose coefficients determined according to Equation 2 for each of the 7 CT scans listed in Table 3, whereas horizontal lines indicate corresponding mean values. RBM = red bone marrow.

View larger version (19K): [in a new window]   FIGURE 2. Statistical relation between calculated and measured effective doses for 7 CT scans listed in Table 3. Solid line gives result of linear regression analysis through origin with a slope of 1.03 and dashed curves indicate 95% confidence interval. Error bars indicate the uncertainty of dose estimates.