Table 3.

Follow-up schedules for four patient classes defined by sonographic plaque type (Gray-Weale) and percentage of ICA stenosis.

G-W modifieda – Stenose ICAb %	F–U iniziale	F–U successivo
Class A: Tipo 1 – Tipo 2, stenosi < 50%	6 months	12 months
Class B: Tipo 1 – Tipo 2, stenosi 50%–69%	3 months	6 months
Class C: Tipo 3 – Tipo 4 – Tipo 5, stenosi < 50%	12 months	18 months
Class D: Tipo 3 – Tipo 4 – Tipo 5, stenosi 50%–69%	6 months	12 months

^aModified Gray-Weale classification.

^bICA: internal carotid artery.