Why the study?
What are the radiation doses and fluoroscopy times for pediatric patients undergoing coronary angiography and PTCA?
What are the radiation doses and fluoroscopy times for pediatric patients undergoing coronary angiography and PTCA?
Pediatric fluoroscopy times and number of images during interventional cardiology procedures reach or exceed adult diagnostic reference levels, highlighting the need for pediatric-specific reference levels and dose optimization.
Pediatric CA/PTCA radiation metrics may exceed adult DRLs; leaves open need for age-specific benchmarks and optimization trials.
The objective was to investigate paediatric doses in coronary angiography (CA) and percutaneous transluminal coronary angioplasty (PTCA) in the largest cardiac hospital in Greece. Forty procedures were carried out by two board-certified senior interventional cardiologists. Data collected were: patient weight, height, age, fluoroscopy time (FT), total number of images (N) and kerma-area product (KAP). Median (range) age was 7.5 y (17 d to 17 y). Median FT, N and KAP were 4 min, 655, 2.1 Gy cm2 for CA and 12.1 min, 1296, 14.7 Gy cm2 for PTCA (corresponding adult diagnostic reference levels (DRLs) are: 6.5 min, 700, 45 Gy cm2 for CA and 15.5 min, 1000 and 85 Gy cm2 for PTCA). The highest percentage of cine dose was in newborns (0-1 y) (CA: 92% and PTCA: 100%). As age increased, cine dose percentage decreased, whereas total radiation dose increased. Median paediatric FT and N recorded reached or even exceeded adult DRL and should be optimised. Paediatric DRL should be set.
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Tsapaki et al. (2009) studied this question.
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