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Updated: Sep 20, 2025

Author Spotlight: Advancing Cardiovascular Imaging - Introducing the Spatially Weighted Calcium Score for Early Disease Detection
Published on: September 22, 2023
Discrepancy Between Optical Coherence Tomography-Based and Intravascular Ultrasound-Based Calcium Scoring for Heavily
Wataru Sasaki1, Masaru Ishida1, Yuya Taguchi1,2
1Division of Cardiology, Department of Internal Medicine, Iwate Medical University.
Background:
Intravascular lithotripsy (IVL) is currently recommended for heavily calcified coronary lesions with an optical coherence tomography (OCT)- or intravascular ultrasound (IVUS)-based calcium score of 3 or 4.
Methods And Results:
We retrospectively assessed both calcium scores for the same lesions, which had a heavily calcified coronary lesion requiring plaque modification. Among 52 lesions, the mean OCT-based calcium score was 3.96, whereas the mean IVUS-based calcium score was 2.15 (P<0.001).
Conclusions:
This comparative study revealed a significant discrepancy between IVUS- and OCT-based calcium scores in heavily calcified coronary lesions, which may influence treatment strategies, including use of IVL.
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