RADIATION EXPOSURE TO CHILDREN DURING CARDIAC-CATHETERIZATION

The purpose of this study was to assess the suitability of different r adiation dosimetry methods and record radiation exposures during paedi atric catheterization. Three methods of dosimetry were employed: therm oluminescent dosimetry (TLD), dose-area product and calculation of ent rance surface dose from calibrated exposure factors. Examinations incl uded bi-plane fluoroscopy, and cineangiography for diagnosis and treat ment of congenital heart disease. The most suitable method of radiatio n dosimetry for cardiac catheterization is the use of calculated entra nce dose or a dose-area product meter. Children were exposed to high l evels of radiation during cardiac catheterization but there was a wide variation in radiation dosage. Careful consideration should be given to the suitability of radiation dosimetry for cardiac catheterization.