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Table 1 The Total Plaque Risk Score (TPRS)

From: Plaque morphology detected with Duplex ultrasound before carotid angioplasty and stenting (CAS) is not a predictor of carotid artery in-stent restenosis, a case control study

Parameter Score = 0 Score = 1 Score = 2 Score = 3
I) Degree of stenosis < 40% (NASCET) ≥ 40% (NASCET)   
II) Echogenicity   Low echogenicity or echolucency Intermediate echogenicity Hyper-echogenicity
III) Texture Homogeneous Heterogeneous   
IV) Surface Smooth Irregular