Comparison of image quality in pediatric head computed tomography reconstructed using blended iterative reconstruction versus filtered back projection

Chang Ho; Robert Oberle; Isaac Wu; Eugene Kim

doi:10.1016/j.clinimag.2013.12.009

Comparison of image quality in pediatric head computed tomography reconstructed using blended iterative reconstruction versus filtered back projection

Clin Imaging. 2014 May-Jun;38(3):231-5. doi: 10.1016/j.clinimag.2013.12.009. Epub 2013 Dec 21.

Authors

Chang Ho¹, Robert Oberle², Isaac Wu², Eugene Kim²

Affiliations

¹ Indiana University School of Medicine, Radiology Department. Electronic address: cyho@iupui.edu.
² Indiana University School of Medicine, Radiology Department.

PMID: 24456988
DOI: 10.1016/j.clinimag.2013.12.009

Abstract

We compared image quality in 44 pediatric head computed tomographic exams reconstructed using four levels of blended iterative techniques (iDOSE 1-4) versus filtered back projection. Three radiologists reviewed the 220 series in a randomized, blinded manner. They scored each series based on gray-white matter differentiation, visibility of the pre-pontine cistern, caudate head, image noise, and image quality. Noise was measured in the vitreous and the thalamus. Composite scores were highest with iDOSE 4 (P<.0001). Interobserver agreement was fair to moderate. Spearman's rho of the vitreous (-0.62, P<.001) and thalamus (-0.58, P<.001) confirmed a significant inverse correlation between iDOSE level and noise.

Keywords: Dose reduction; Image quality; Iterative reconstruction; Pediatric head CT.

Publication types

Comparative Study
Randomized Controlled Trial

MeSH terms

Adolescent
Brain / diagnostic imaging*
Child
Child, Preschool
Female
Humans
Infant
Infant, Newborn
Male
Neuroimaging*
Radiation Dosage
Radiographic Image Interpretation, Computer-Assisted / methods*
Tomography, X-Ray Computed*
Young Adult