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Comparison of radiation doses between newborns and 6-y-old children undergoing head, chest and abdominal CT examinations: a phantom study.

Authors
  • Sugimoto, Naruto
  • Aoyama, Takahiko
  • Koyama, Shuji
  • Yamauchi-Kawaura, Chiyo
  • Fujii, Keisuke
Type
Published Article
Journal
Radiation Protection Dosimetry
Publisher
Oxford University Press
Publication Date
Jan 01, 2013
Volume
153
Issue
1
Pages
85–91
Identifiers
DOI: 10.1093/rpd/ncs085
PMID: 22645383
Source
Medline
License
Unknown

Abstract

Radiation doses in paediatric computed tomography (CT) were investigated for various types of recent CT scanners with newborn and 6-y-old phantoms in which silicon-photodiode dosemeters were implanted at various organ positions. In the head, chest and abdominal CT for the newborn phantom, doses for organs within the scan region were 21-40, 3-8 and 3-12 mGy, respectively. The corresponding doses for the child phantom were 20-37, 2-11 and 4-17 mGy, respectively. In the head, chest and abdominal CT, the effective doses were respectively 2.1-3.3, 2.0-6.0 and 2.2-10.0 mSv for the newborn, and 1.0-2.0, 1.2-6.6 and 2.9-11.8 mSv for the child. Radiation doses for the newborn were at the same levels as those for the child, excepting effective doses in head CT for the newborn, which were 1.8 times higher than those for the child.

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