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Updated: Jul 14, 2026

A Whole Body Dosimetry Protocol for Peptide-Receptor Radionuclide Therapy (PRRT): 2D Planar Image and Hybrid 2D+3D SPECT/CT Image Methods
Published on: April 24, 2020
CT dose optimization when changing to CT multi-detector row technology
Francis R Verdun1, Daniel Gutierrez, Pierre Schnyder
1University Institute for Radiation Physics, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland. francis.verdun@chuv.ch
Abstract:
The purpose of this article was to review the strategies to control patient dose in adult and pediatric computed tomography (CT), taking into account the change of technology from single-detector row CT to multi-detector row CT. First the relationships between computed tomography dose index, dose length product, and effective dose in adult and pediatric CT are revised, along with the diagnostic reference level concept. Then the effect of image noise as a function of volume computed tomography dose index, reconstructed slice thickness, and the size of the patient are described. Finally, the potential of tube current modulation CT is discussed.
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