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Radiation dose to patients undergoing invasive coronary angiography ( ICA ) is relatively high. Guidelines suggest that a local benchmark or diagnostic reference level ( DRL ) be established for these procedures. This study sought to create a  DRL  for  ICA  procedures in Queensland public hospitals.    Methods  Data were collected for all Cardiac Catheter Laboratories in Queensland public hospitals. Data were collected for diagnostic coronary angiography ( CA ) and single‐vessel percutaneous intervention ( PCI ) procedures. Dose area product ( P  KA ), skin surface entrance dose (  K  AR  ), fluoroscopy time ( FT ), and patient height and weight were collected for 3 months. The  DRL  was set from the 75th percentile of the  P  KA.Results  2590 patients were included in the CA group where the median FT was 3.5 min (inter‐quartile range = 2.3–6.1). Median  K  AR  = 581 mGy (374–876). Median  P  KA  = 3908 uGym 2  (2489–5865) DRL = 5865 uGym 2 . 947 patients were included in the PCI group where median FT was 11.2 min (7.7–17.4). Median  K  AR  = 1501 mGy (928–2224). Median  P  KA  = 8736 uGym 2  (5449–12,900) DRL = 12,900 uGym 2 .    Conclusion  This study established a benchmark for radiation dose for diagnostic and interventional coronary angiography in Queensland public facilities.

journal of medical radiation sciences

Radiation dose in coronary angiography and intervention: initial results from the establishment of a multi‐centre diagnostic reference level in Queensland public hospitals