The rapid technological progress is also reflected in radiology and its digitalization. In just a few years, conventional radiography has made the transition from classic X-ray film via phosphor storage plate to digital detectors. The dose evolution in the course of this modernization will be highlighted in this study.

In 2017 the last phosphor storage plate systems (AGFA CR MD 4.0) were replaced by digital detectors (Fuji FDR D-EVO II) in our university medical center. Both phosphor storage plates and detectors are image-receiving systems that deliver digital images and are characterized by a particularly wide dynamic range. In addition, the detectors with indirect conversion have a very high quantum efficiency of 60-70% compared to the previously used phosphor storage plates (20-35%). In order to compare the influence of the detector system changeover on the...

The results of dose area product analysis for different anatomies are summarized in Figure 1. For X-rays of the chest, the average dose area product (DAP) for 3-year-old children was reduced from 2.76 µGcm² in 2013-2014 to 0.48 µGcm² in 2017-2019. For adults, the dose reduction was slightly lower. Here, a reduction of 79% was observed instead of 83% for children. In general, the DAP for adults was at a significantly higher level due to the greater absorption length for an adult chest compared to...

The implementation of digital detectors lead to a reduction of exposure in daily practice of 70% (range 25% - 86%). Particularly with regard to pediatric radiology, digital detectors should be the standard of care.

[1] © "Institute for Diagnostic and Interventional Radiology, Pediatric and Neuroradiology of the Rostock University Medical Center” [2] DIN 6868-150:2013-06 Image quality assurance in diagnostic X-ray departments - Part 150: RöV acceptance test of medical radiographic and fluoroscopic X-ray equipment

P. Sänger: Nothing to disclose C. Lappe: Nothing to disclose M-A. Weber: Nothing to disclose M. Lütgens: Nothing to disclose