Congress:
EuroSafe Imaging 2020
Keywords:
Performed at one institution, Not applicable, Retrospective, Pathology, Diagnostic procedure, Conventional radiography, Radioprotection / Radiation dose, Paediatric, Extremities, Action 7 - Radiation protection of children
DOI:
10.26044/esi2020/ESI-14200
Description of activity and work performed
Approx. 180 hand x-ray eximinations per year performed on patients under the age of 10 years and 20 patients under the age of 5 years on a Samsung XGEO GC80 x-ray system.
The standard hand examination procedure is performed with the flat panel detector positioned on the patient table and the patient hand on the detector. These routine exams are performed at tube voltages of 56-59kV and a current-time-product of 1,60 mAs with a Dose-Area-Product of 2...5 mGy*cm².
At times some examinations leads to false reconstructed images no matter of the age and the patient’s hand thickness. Even new reconstructions of the raw images with different reconstruction kernels were not able to render the image for diagnostic useage.
Therefore an additional image (retake) has to be taken which results in an double x-ray exposure. Approx. 5%-10% show the above mentioned failure in image reconstruction.
By analyzing the dicom headers of both images (error image and retake image) differences in the estimatated Region-of-Interest could be identified in this study.
The author assumes that this failure results in a false image reconstruction but there is no confirmation by the manufacturer.