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Comparison of image quality in pediatric head computed tomography reconstructed using blended iterative
Chang Ho1, Robert Oberle1, Isaac Wu1
1Indiana University School of Medicine, Radiology Department.
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.
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