Keywords:
Paediatric, CT, Radiation effects, Radiation safety, Kv imaging
Authors:
T. Oku1, T. Masuda1, N. Imada2, Y. Matsumoto1, M. yoshida1, Y. yamashita1; 1Hiroshima/JP, 2Hiroshima /JP
DOI:
10.26044/ecr2019/C-2995
Aims and objectives
Pediatric CT examination plays an important role in the diagnosis of pediatric patients,
and establishment of intervention management.
However,
the most serious drawback of CT is radiation exposure- which leads to an increased risk of cancer1-4).
Because pediatric patients' radiosensitivity is much higher than that of the adult patient,
from our understanding when performing the same protocol on CT exams,
doses 3 to 5 times greater than the exposures to adults are administered to the sensitive young patients5).
ALARA advocates strict efforts to reduce these radiation exposure doses in pediatric CT examination and with the use of bowtie filters6).
However,
the CT device is not specifically designed for use for children.
Equipment manufacturer's recommendation protocol for pediatric CT examination has selected a small bowtie filter and 120 kV tube voltage.
However,
there is no report to select the bowtie filter with various tube voltages in pediatric CT examination due to the manufacturer not being a pediatric radiological expert.
Therefore,
the purpose of this study was to evaluate the shape of the each bowtie and to select the optimal bowtie filter at the pediatric CT examination since we are pediatric radiological professionals.