Radiation dose reduction in pediatric great vessel stent computed tomography using iterative reconstruction: A phantom study.

ABSTRACT:

Background

To study dose reduction using iterative reconstruction (IR) for pediatric great vessel stent computed tomography (CT).

Methods

Five different great vessel stents were separately placed in a gel-containing plastic holder within an anthropomorphic chest phantom. The stent lumen was filled with diluted contrast gel. CT acquisitions were performed at routine dose, 52% and 81% reduced dose and reconstructed with filtered back projection (FBP) and IR. Objective image quality in terms of noise, signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) as well as subjective image quality were evaluated.

Results

Noise, SNR and CNR were improved with IR at routine and 52% reduced dose, compared to FBP at routine dose. The lowest dose level resulted in decreased o

SUBMITTER: den Harder AM 

PROVIDER: S-EPMC5391930 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature