Impact of iterative model reconstruction combined with dose reduction on the image quality of head and neck CTA in children.

ABSTRACT: This study aimed to evaluate the imaging quality of head and neck computed tomographic angiography (CTA) in pediatric patients at a lowered radiation dose by combining an iterative model reconstruction (IMR) with low voltage scanning. Eighty-three pediatric patients were randomized into two groups as follows: Group A (n?=?42), 100?kV/50?ml contrast media (CM), using filtered back projection (FBP); and Group B (n?=?41), 80?kV/30?ml CM, using IMR. The enhanced CT value of the arteries, the image noise, the signal-to-noise ratio (SNR)/contrast-to-noise ratio (CNR), the image quality, the effective radiation dose (ED) and the iodine intake were compared between the two groups. The mean ED and iodine intake of group B were reduced by 69.8% and 40.0%, respectively, compared to those of group A. The mean CT values of the arteries in group B were higher than those in group A (p?

SUBMITTER: Cheng B 

PROVIDER: S-EPMC6105670 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature