A computer network system and a method are disclosed for accessing a dose image database for medical imaging using ionizing radiation via an imaging device. An embodiment includes a multiplicity of imaging devices connected via a network connection to the dose image database, each imaging device including a transmit unit to transmit the images captured by the imaging device to the dose image database. An allocation between an image or a class of images, a dose measurement value, an image quality measurement value and optionally further medical metadata are stored in the dose image database. A control unit is included to exchange date with the dose image database and to generate control variables automatically while accessing the dose image database depending on at least one selection parameter to be defined, the parameters being forwarded via a network connection to at least one imaging device to control the imaging.
