Fluorescence Imaging of the Parathyroid Glands of Children

Patients that participate in this study will always receive standard care. For the purpose of this study, the camera settings (i.e. camera distance to the operating field, switching of OR-lights, and angle of the camera on the operating field) and ICG-protocol (i.e. dose, injection speed) will be standardized among the participating centers in order to generate an homogeneous data set for quantification of the fluorescence signal intensity.