Congress:
EuroSafe Imaging 2019
Keywords:
Action 2 - Clinical diagnostic reference levels (DRLs), Radioprotection / Radiation dose, Interventional vascular, Fluoroscopy, Angioplasty, Dosimetric comparison
Authors:
E. Tzanis, E. Kehagias, D. Tsetis, J. Damilakis
DOI:
10.26044/esi2019/ESI-0008
Description of activity and work performed
Data were collected for 28 consecutive patients who underwent endovascular treatment of the iliac arteries.
DRLs are established as the 3rd quartile of the dose distribution.
For each patient total fluoroscopy time,
total DAP,
peak skin dose (PSD),
body mass index (BMI) and the number of digital subtraction angiography (DSA) series were recorded.
All procedures were performed on a Siemens Axiom Artis FA angiographic unit (Siemens,
Erlangen,
Germany) by two experienced interventional radiologists.
DRLs presented herein are divided into three groups.
DRLs for low,
medium and high complexity procedures.
The complexity scoring was based on Ruiz-Cruces et al study [3] (Figure 1).
Evaluation of the complexity level was performed in the end of each procedure by an interventional radiologist and the complexity score was recorded.
Complexity indices are well correlated with the median DAP values (Figure 2).
Specifically,
for procedures with low complexity score (≤5),
the median DAP was 5,113 μGym2,
while for procedures with a complexity score ≥ 7,
the median DAP was 7,952 μGym2.
Table 1 presents the preliminary DRL estimates for low,
medium and high complexity procedures.
Mean values of FT,
BMI DAP and complexity index (CI) are presented in Table 2 for comparison reasons.
Correlations between CI and DAP,
FT and PSD as well as between FT and DAP,
PSD were ranged from 0.49 to 0.67 (Table 3).
The strongest correlation was between FT and CI (0.67) while the weakest was between PSD and CI (0.49).