Risk stratification using coronary artery calcium scoring based on low tube voltage computed tomography.

ABSTRACT: To determine if coronary artery calcium (CAC) scoring using computed tomography at 80 kilovolt-peak (kVp) and 70-kVp and tube voltage-adapted scoring-thresholds allow for accurate risk stratification as compared to the standard 120-kVp protocol. We prospectively included 170 patients who underwent standard CAC scanning at 120-kVp and 200 milliamperes and additional scans with 80-kVp and 70-kVp tube voltage with adapted tube current to normalize image noise across scans. Novel kVp-adapted thresholds were applied to calculate CAC scores from the low-kVp scans and were compared to those from standard 120-kVp scans by assessing risk reclassification rates and agreement using Kendall's rank correlation coefficients (Τ_b) for risk categories bounded by 0, 1, 100, and 400. Interreader r

SUBMITTER: Bechtiger FA 

PROVIDER: S-EPMC10509109 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature