the 5th European Congress of Medical Physics At the 5th European Congress of Medical Physics, which was held 11 – 14 September 2024 in Science Congress Center Munich, our consortium presented two oral presentations and three posters. CHALLENGES IN MEDICAL X-RAY IMAGING DOSIMETRY: THE TRACEABILITY CHAIN IS BROKEN(presentation) FIELD CALIBRATION FOR AIR KERMA AND HALF-VALUE LAYER OF XRAY MULTIMETERS ON TWO DIFFERENT MAMMOGRAPHY SYSTEMS X-RAY FLUENCE SPECTRA OF DIAGNOSTIC AND INTERVENTIONAL RADIOLOGY X-RAY IMAGING EQUIPMENT MEASURED WITH A COMPACT CADMIUM TELLURIDE SPECTROMETER(poster) MISMATCH BETWEEN DOSIMETER CALIBRATION AND CLINICALLY RELEVANT X-RAY SPECTRA AND RESULTING CONSEQUENCES(poster) CALIBRATION OF SEMICONDUCTOR-BASED X-RAY MULTIMETERS IN DIAGNOSTIC RADIOLOGY BEAMS(poster)