Survey of normalized CTDI_vol values across four major computed tomography vendors for use in the MIRDct software.

ABSTRACT:

Background

Computed tomography (CT) is an essential imaging modality for disease diagnosis, treatment efficacy, and image-based guidance of various medical procedures. The locally deposited radiation dose in tissues, as estimated by the computed tomography dose index (CTDI), can vary considerably across exposures delivered by CT scanners from different vendors, even if the scans are performed using similar technique factors, such as tube potential and tube current. The volumetric CTDI (CTDI_vol) is a common dose metric that reports an average radiation dose (in mGy) delivered to a specific volume within a test phantom. The CTDI_vol is important in dosimetry applications as the organ absorbed dose within the patient has been shown to scale in near-linear proporti

SUBMITTER: Dinwiddie LE 

PROVIDER: S-EPMC12835190 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature