Speaker
Dr
Helene BAYSSON
(IRSN)
Description
Children with congenital heart disease frequently undergo interventional cardiology procedures for diagnosis or intervention purposes. The complexity of these procedures may result in high radiation exposures. Given the high radiosensitivity of children, and their longer life span to develop radiation-health effects, an epidemiological cohort study is being launched in France in order to evaluate leukaemia and cancer risks among this specific population. In this context, precise retrospective evaluation of doses received by the children during paediatric interventional cardiology is needed.
The study population includes all children who underwent at least one interventional cardiology procedure since 2000, who were under 16 years old at the time of the procedure. Up to now, 4500 children have been already included in the cohort but recruitment is still ongoing. On average, each child has undergone 1.3 interventional cardiology procedures, for a total of over 5,000 procedures. Nearly half of these were performed during the first year of life of the children involved.
Dosimetric information have been collected and assessed over the period 2010-2011. Exposure parameters (dose x area product, fluoroscopy time and number of images) were retrieved from the dose-recording system and were tabulated and statistically analysed. The doses received at different organs were also evaluated using anthropomorphic phantoms (newborn, 1 year, 5 year, 10 year and 15 year old children) in which are inserted thermoluminescent dosimeters. Organ doses were calculated using software PCXMC 2.0, for different weight of the child at the time of the procedure. Finally, Dose Reference Levels will be established and effective doses will be calculated. Results will be presented according to different types of interventional cardiology procedures (diagnostic and therapeutic) and for different sub-categories of procedures, providing new information on typical levels of doses for paediatric interventional cardiology procedures in France.
Primary author
Dr
Helene BAYSSON
(IRSN)
Co-authors
Dr
Bernard Aubert
(IRSN)
Mrs
Brigitte Girodon
(Hôpital Necker, Paris)
Prof.
Damien Bonnet
(Hôpital Necker, Paris)
Dr
Dominique Laurier
(IRSN)
Mr
Jean Luc Réhel
(IRSN)
Dr
Marie-Odile Bernier
(IRSN)
Ms
Sérine Barnaoui
(IRSN)
Dr
Younes Boudjemline
(Hôpital Necker, Paris)
