TH-AB-207A-08: Variation of Size-Specific Dose Estimates Across Patient Sizes Under the Conditions of Automatic Exposure Control

Purpose: CT automatic exposure control (AEC) systems adjust tube current output in response to changes in patient attenuation. Some have interpreted this to mean that the use of AEC results in constant size-specific dose estimates (SSDE) across patient sizes. The purpose of this work was to derive the AEC parameters that yield constant SSDE across patient sizes and compare these conditions with clinical implementations of AEC. Methods: The...