Assessment of radiation exposure on a dual-source computed tomography-scanner performing coronary computed tomography-angiography  S. Kirchhoff, P. Herzog,

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Assessment of radiation exposure on a dual-source computed tomography-scanner performing coronary computed tomography-angiography  S. Kirchhoff, P. Herzog, T. Johnson, H. Böhm, K. Nikolaou, M.F. Reiser, C.H. Becker  European Journal of Radiology  Volume 74, Issue 3, Pages e181-e185 (June 2010) DOI: 10.1016/j.ejrad.2009.06.001 Copyright © 2009 Elsevier Ireland Ltd Terms and Conditions

Fig. 1 Standard 32-cm computed tomography dose index (CTDI) body phantom with calibrated ionization chamber (length 100mm) and computerized counter with the set placed in the isocenter of the scanner gantry. European Journal of Radiology 2010 74, e181-e185DOI: (10.1016/j.ejrad.2009.06.001) Copyright © 2009 Elsevier Ireland Ltd Terms and Conditions

Fig. 2 (a) Comparison between phantom-based radiation exposure and patients’ exposure during routine with lower heart rates and narrow pulsing window of 65%. (b) Comparison between phantom-based radiation exposure and patients’ exposure during routine with higher heart rates and a larger pulsing window between 30 and 70% of cardiac cycle. European Journal of Radiology 2010 74, e181-e185DOI: (10.1016/j.ejrad.2009.06.001) Copyright © 2009 Elsevier Ireland Ltd Terms and Conditions

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