Estimation and analysis ofvalues forI using paediatric mesh type reference computational phantoms.

This study examines the effect of paediatric mesh-type reference computational phantoms on organvalues resulting from radioiodine (I) intake. Using Geant4, we estimatedIvalues for 30 radiosensitive target tissues due to emission from the thyroid (Target ← Thyroid) in these phantoms. Our results show thatvalues differ between male and female phantoms of the same age andvalues also decrease as phantom age increases.

Modelling of constant and realistic chronic intake scenarios and their implications.

Chronic inhalation intake of radionuclides is possible for radiation workers in the nuclear industry. The International Commission on Radiological Protection (ICRP) provides organ retention fractions as well as daily urinary and fecal excretion for chronic intake of various radionuclides. In this study, organ retention fractions and daily urinary excretion for chronic intake were estimated for constant chronic intake (CCI) and realistic chronic intake (RCI) scenarios.

I dose coefficients for a reference population using age-specific models.

Age-specific dose coefficients are required to assess internal exposure to the general public. This study utilizes reference age-specific biokinetic models of iodine to estimate the total number of nuclear disintegrations ã(,τ) occurring in source regions () during the commitment time (τ). Age-specific S values are estimated for 35 target regions due toI present in 22using data from 10 paediatric reference computational phantoms (representing five ages for both sexes) published recently by the International Commission of Radiation Protection (ICRP).