Effects of various tilt angles on radiation dose and image quality in pediatric head computed tomography: A phantom study.

ABSTRACT:

Background

Various methods have been employed to reduce radiation dose and improve image quality in head computed tomography (CT); however, the impact of different head tilt angles on these factors remains underexplored.

Objective

To investigate the effects of different head tilt angles on radiation dose and image quality in head CT.

Materials and methods

A pediatric anthropomorphic head phantom was scanned using dual-source CT at 18 different tilt angles, repeated 10 times at each angle. Image quality was assessed using mean CT (CT_mean) attenuation values and image noise at six regions of interest (ROIs), while radiation dose was evaluated using volume CT dose index (CTDI_vol), size-specific dose estimate (SSDE), and dose-length product (DLP). Th

SUBMITTER: Xu H 

PROVIDER: S-EPMC12260256 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature