Coronary computed tomography angiography using the diluted contrast material protocol: a technique for achieving uniform coronary artery enhancement.

ABSTRACT:

Purpose

A diluted contrast material (CM) protocol is used to achieve consistent coronary artery enhancement. In this study, we aimed to evaluate the feasibility of the diluted CM protocol compared with the fractional dose (FD) protocol for coronary computed tomography angiography (CCTA) performed at a low tube voltage (100 kVp).

Materials and methods

We analyzed 103 patients (mean age, 68 ± 14 years; 54 males) who underwent CCTA between July 2022 and September 2024. A total of 50 and 53 patients underwent the diluted CM and the FD protocols, respectively. The diluted CM protocol involves individualized contrast dilution based on a simulated time-attenuation curve to attain a target arterial attenuation of 450 Hounsfield units (HU). In the FD protocol, contrast material volum

SUBMITTER: Ohara K 

PROVIDER: S-EPMC12647354 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature