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Updated: May 1, 2026
Author Spotlight: Advancing Cardiovascular Imaging - Introducing the Spatially Weighted Calcium Score for Early Disease Detection
Published on: September 22, 2023
Calcium score: semiautomatic calculation using different vendors versus fully automatic software
Olga R Brook1, Subhi Abadi, Reuven Shreiber
1From the *Department of Diagnostic Imaging, Rambam Health Care Campus, Haifa, Israel; †Department of Radiology, Beth Israel Deaconess Medical Center, Boston, MA; and ‡Diagnostic Radiology, Henry Ford Hospital, Detroit, MI.
Calcium score measurements show strong agreement across different vendors and software types. This indicates robust and reliable results regardless of whether vendor-specific, unrelated, or fully automatic software is used for cardiac imaging analysis.
Area of Science:
- Cardiovascular Imaging
- Medical Physics
- Radiology
Background:
- Technological advancements have led to diverse cardiac imaging postprocessing software.
- Software from vendors unrelated to the original scanner is now common.
- Fully automatic calcium score software has emerged as a new option.
Purpose of the Study:
- To assess intervendor variability in calcium score measurements.
- To compare vendor-specific, unrelated vendor, and fully automatic software.
- To evaluate the robustness of calcium scoring across different software platforms.
Main Methods:
- Retrospective analysis of 101 patients undergoing calcium scoring from March 2007 to January 2008.
- Studies performed on 64-slice CT scanners from two different vendors.
- Calcium scores measured using semiautomatic software on vendor-specific and unrelated workstations, and by fully automatic software, with blinded readings.
- Agreement assessed using Pearson correlation, Bland-Altman plots, and Fleiss kappa (κ).
Main Results:
- High intervendor agreement observed (κ = 0.98 ± 0.01 and κ = 0.96 ± 0.02).
- Excellent interobserver agreement (κ = 1).
- Semiautomatic versus automatic software showed strong agreement (κ = 0.88 to 0.94).
Conclusions:
- Calcium score measurements demonstrate very strong agreement across different software vendors and types.
- Measurements are robust whether using vendor-specific, unrelated, or fully automatic software.
- This consistency supports the reliable use of various software solutions for cardiac calcium scoring.
