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Table 3 The classifications of lipid percentage index (LPI) and cap thickness index (CTI) for vulnerable plaque

From: Predicting plaque vulnerability change using intravascular ultrasound + optical coherence tomography image-based fluid–structure interaction models and machine learning methods with patient follow-up data: a feasibility study

LPI The range of lipid percentage CTI The range of Min cap thickness
0 LP = 0% (no lipid) 0 No lipid
1 0% < LP < 5% 1 MinCT > 0.3 mm
2 5% ≤ LP < 15% 2 0.20 mm < MinCT ≤ 0.3 mm
3 15% ≤ LP < 25% 3 0.065 mm < MinCT ≤ 0.2 mm
4 25% ≤ LP < 100% 4 MinCT ≤ 0.065 mm