Effect of arm position, presence of medical devices, and off-centering during acquisition of scout image on automatic tube voltage selection and current modulation in pediatric chest CT.

ABSTRACT:

Purpose

To evaluate the patients' morphologic factors affecting radiation dose in pediatric chest CT.

Materials and methods

From November 2013 to May 2015, 315 pediatric chest CT scans were obtained using a CT scanner, and classified into 5 groups according to the patients' age. For each age group, the chest CT scans were divided into two subgroups. A cut-off value used was the 75th percentile of size-specific dose estimates (SSDE), age-specific diagnostic reference level (DRL): less than the 75th percentile of SSDE (Group A, n = 238) and greater than the 75th percentile of SSDE (Group B, n = 77). All CT scans were performed with the same protocol using automatic tube voltage selection and current modulation techniques. The morphologic factors of the patients including body

SUBMITTER: Ryu YJ 

PROVIDER: S-EPMC5903633 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature