Pediatric head computed tomography with advanced modeled iterative reconstruction: focus on image quality and reduction of radiation dose

  • Hyun-Hae ChoEmail author
  • So Mi Lee
  • Sun Kyoung You
Original Article



Iterative reconstruction has become the standard method for reconstructing computed tomography (CT) scans and needs to be verified for adaptation.


To assess the image quality after adapting advanced modeled iterative reconstruction (ADMIRE) for pediatric head CT.

Materials and methods

We included image sets with filtered back projection reconstruction (the cFBP group, n=105) and both filtered back projection and ADMIRE reconstruction (the lower-dose group, n=109) after dose reduction. All five strength levels of ADMIRE and filtered back projection were adapted for the lower-dose group and compared with the cFBP group. Quantitative parameters including noise, signal-to-noise ratio and contrast-to-noise ratio and qualitative parameters including noise, white matter and gray matter differentiation of the supra- and infratentorial levels, sharpness, artifact, and diagnostic accuracy were also evaluated and compared with interobserver agreement.


There was a mean dose reduction of 30.6% in CT dose index volume, 32.1% in dose length product, and 32.1% in effective dose after tube current reduction. There was gradual reduction of noise in air, cerebrospinal fluid and white matter with strength levels of ADMIRE from 1 to 5 (P<0.001). Signal-to-noise ratio and contrast-to-noise ratio in all age groups increased among strength levels of ADMIRE, in sequence from 1 to 5, with statistical significance (P<0.001). Gradual reduction of qualitative parameters was noted among strength levels of ADMIRE in sequence from 1 to 5 (P<0.001).


Use of ADMIRE for pediatric head CT can reduce radiation dose without degrading image quality.


Brain Children Computed tomography Image quality Iterative reconstruction Radiation dose 


Compliance with ethical standards

Conflicts of interest



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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of RadiologyEwha Womans University Mokdong HospitalSeoulRepublic of Korea
  2. 2.Department of Radiology, School of MedicineKyungpook National University, Kyungpook National University HospitalDaeguSouth Korea
  3. 3.Department of RadiologyChungnam National University HospitalDaejeonRepublic of Korea

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