Research Information System
3rd European Congress of Medical Physics, Taranto, Italy, 16 - 19 June 2021, vol.92, no.1, pp.111, (Summary Text)
Purpose: ICRP recommends the use of diagnostic reference levels
(DRLs) as an important tool for the management and optimization
of radiation dose to patients who undergo radiologic examinations.
In Turkey, there is no recent study or report considering DRLs
for interventional procedures. This study aims to present the
preliminary results for DRLs based on common interventional
procedures carried out at the Department of Radiology, Dokuz Eylül
University Hospital located in İzmir, Turkey.
Materials and Method: Retrospective data collection have been
based on four most frequent therapeutic or diagnostic interventional
procedures which are carried out between August 2018 - June 2020
and identified as cerebral angiography (CA), cerebral embolization
(CE), biliary drainage (BD) and hepatic chemoembolization (HC). All
of the procedures were performed with Phillips Allura Xper 20/10
biplane x-ray imaging system. Instructions of ICRP were followed for
the collection and statistical analysis of the data. Datasets involved
dose area product (DAP), cumulative air Kerma at the reference point
(Ka,r) and fluoroscopy time (FT). Median values of each dataset were
recorded as typical DRLs representing the institutional practice.
Results: 169 patients have been included in this study. 54.4% of the
patients were male and 45.6% were female, with a mean age of 56.1
(±15.8). Median DAP values were found to be 205, 75, 26 and 224
Gy.cm2 for CE, CA, BD and HC, respectively. Median Ka,r values were
found to be 2023, 550, 144 and 719 mGy for CE, CA, BD and HC,
respectively. Median FT values were found to be 18.55, 4.25, 4.0 and
5.33 min for CE, CA, BD and HC, respectively.
Conclusions: Findings of our study agree well with the findings
reported by various international studies. This indicates that the
interventional procedures in Dokuz Eylül University Department
of Radiology are carried out under consideration of radiation
protection measures. This pilot study is part of an institutional
project which is supported by Dokuz Eylül University and aims to
reach a more extensive database to cover local and national DRLs in
the near future.