Assessment of the global noise algorithm for automatic noise measurement in head CT examinations.

ABSTRACT:

Purpose

The global noise (GN) algorithm has been previously introduced as a method for automatic noise measurement in clinical CT images. The accuracy of the GN algorithm has been assessed in abdomen CT examinations, but not in any other body part until now. This work assesses the GN algorithm accuracy in automatic noise measurement in head CT examinations.

Methods

A publicly available image dataset of 99 head CT examinations was used to evaluate the accuracy of the GN algorithm in comparison to reference noise values. Reference noise values were acquired using a manual noise measurement procedure. The procedure used a consistent instruction protocol and multiple observers to mitigate the influence of intra- and interobserver variation, resulting in precise reference values.

SUBMITTER: Ahmad M 

PROVIDER: S-EPMC9291315 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature