Split-bolus computed tomography urography (CTU) achieves more than half of radiation dose reduction in females and overweight patients than conventional single-bolus computed tomography urography.

ABSTRACT:

Objective

To compare radiation dose between single-bolus and split-bolus computed tomography urography (CTU).

Materials and methods

We prospectively enrolled patients undergoing single-bolus and split-bolus CTU from 2019 June to 2020 June. The age, sex and body mass index (BMI) of each patient was recorded and categorized into BMI classes. The radiation dose indices including volumetric computed dose index, size-specific dose estimate, dose length product and effective dose of each patient were compared between 2 CTU groups with calculation of dose reduction proportions (DRPs).

Results

Seventy-six patients underwent single-bolus (n = 39) and split-bolus (n = 37) CTU. Single-bolus CTU had higher radiation doses than split-bolus CTU and there were statistically signific

SUBMITTER: Wang LJ 

PROVIDER: S-EPMC8193142 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature