In the last years also in Slovakia it was found a significant increase of the number of CT examinations, performed not only in the group of adult patients, but also for children. Because the number of CT procedures performed in a year, accounts for more than 50% of the total population dose from the medical examinations and it is well known that the lifetime cancer risk from radiation exposure in childhood for a given dose is much higher for the younger age groups compared to...

The realization of the survey of CT exposures of the children was accomplished by the application of the automatized Dose Quality Control System (DQC) , in the year 2015. During our study there were analyzed 2 190 patients and 4 336 scan series. DQC system enables the estimation and analyses of the amount of energy delivered to the patient´s body by the CT scanner, determined by using appropriate conversion factors which account for the attenuation of the patient´s body size and all other scan parameters...

In many cases during the CT examinations there is observed unnecessary irradiation of patients body parts, which are not the area of interest, from the diagnostic point of view. It is therefore important for DRL estimation to incorporate not only the CTDI values, but also the dose length product (DLP), the quantity taking into account the scan length. The local diagnostic reference values were established in DLP (mGy.cm) for CT examinations of chest, abdomen and head.

V. Lehotska, Oncology Institute of Ss.Elizabeth in Bratislava D. Šalát, University of Ss.Cyril and Methodius in Trnava D.Haviar, Children faculty hospital in Bratislava D.Nikodemova, Slovak Medical University in Bratislava

D.Tack,P.A.Gevenois :Radiation Dose from Adult and Pediatric Multidetector Tomography , ISBN 978-3-540-28888-6