“…However, some of the most common imaging methods, such as X-ray, computed tomography (CT) as well as nuclear medicine imaging (NUC) procedures, such as scintigraphy, single photon emission computed tomography (SPECT) and positron emission tomography (PET) make use of ionizing radiation, and, thus, inherently imply radiation exposure to patients [1] . Even though the exposure from diagnostic procedures is small (in the range of 0.01 mSv to 20 mSv effective dose) and eventual negative effects of such small exposures are controversially discussed [2] , [3] , [4] , in sum they substantially contribute to the general radiation exposure of the population [1] , [5] , [6] .…”