CT acquisition parameter selection in the real world: impacts on radiation dose and variation amongst 155 institutions.

ABSTRACT:

Objective

Quantify the relationship between CT acquisition parameters and radiation dose, how often parameters are adjusted in real-world practice, and their degree of contribution to real-world dose distribution. Identify discrepancies between parameters that are impactful in theory and impactful in practice.

Methods

This study analyses 1.3 million consecutive adult routine abdomen exams performed between November 2015 and Jan 2021 included in the University of California, San Francisco International CT Dose Registry of 155 institutions. We calculated geometric standard deviation (gSD) for five parameters (kV, mAs, spiral pitch, number of phases, scan length) to assess variation in practice. A Gaussian mixed regression model was performed to predict the radiation dose-lengt

SUBMITTER: Wang Y 

PROVIDER: S-EPMC10873435 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature