A practical slice averaged image method for precise CT size specific dose estimates.

ABSTRACT: Computed tomography (CT) is a widely used diagnostic tool, but variations in patient anatomy make accurate radiation dose estimation challenging. While size-specific dose estimates (SSDE) can serve as a more effective tool for dose prediction than conventional indices like CTDI_vol and DLP, calculating the water-equivalent diameter (D_w) for each slice is time-consuming and often impractical. To address this, we propose a novel method, the SSDE slice-averaged image (SSDE_SAI), which calculates D_w from a single image generated by averaging CT values across all slices. This approach captures anatomical variability while reducing calculation effort. We retrospectively analyzed CT data from 282 adult patients in three scan regions: chest, abdomen-pelvis

SUBMITTER: Dendo Y 

PROVIDER: S-EPMC12669235 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature