Prediction of the development of new coronary atherosclerotic plaques with radiomics.

Document Type

Article

Publication Date

5-2024

Publication Title

J Cardiovasc Comput Tomogr

Abstract

BACKGROUND: Radiomics is expected to identify imaging features beyond the human eye. We investigated whether radiomics can identify coronary segments that will develop new atherosclerotic plaques on coronary computed tomography angiography (CCTA).

METHODS: From a prospective multinational registry of patients with serial CCTA studies at ≥ 2-year intervals, segments without identifiable coronary plaque at baseline were selected and radiomic features were extracted. Cox models using clinical risk factors (Model 1), radiomic features (Model 2) and both clinical risk factors and radiomic features (Model 3) were constructed to predict the development of a coronary plaque, defined as total PV ≥ 1 mm

RESULTS: In total, 9583 normal coronary segments were identified from 1162 patients (60.3 ± 9.2 years, 55.7% male) and divided 8:2 into training and test sets. At follow-up CCTA, 9.8% of the segments developed new coronary plaque. The predictive power of Models 1 and 2 was not different in both the training and test sets (C-index [95% confidence interval (CI)] of Model 1 vs. Model 2: 0.701 [0.690-0.712] vs. 0.699 [0.0.688-0.710] and 0.696 [0.671-0.725] vs. 0.0.691 [0.667-0.715], respectively, all p > 0.05). The addition of radiomic features to clinical risk factors improved the predictive power of the Cox model in both the training and test sets (C-index [95% CI] of Model 3: 0.772 [0.762-0.781] and 0.767 [0.751-0.787], respectively, all p < 00.0001 compared to Models 1 and 2).

CONCLUSION: Radiomic features can improve the identification of segments that would develop new coronary atherosclerotic plaque.

CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov NCT0280341.

Volume

18

Issue

3

First Page

274

Last Page

280

DOI

10.1016/j.jcct.2024.02.003

ISSN

1876-861X

PubMed ID

38378314

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