Table 2. IVUS stent optimization criteria.

TULIP criteria (31)	AVID criteria (32)	MUSIC criteria (30,33)	RESIST criteria (34)	BEST criteria (35)	AVIO criteria (36), [balloon size (mm)/achievable optimal result (mm2)]
Complete stent apposition	MLA ≥90% of distal minimal vessel lumen CSA	Complete stent apposition	IVUS criteria for crossover to stent: >30% stenosis or MLA <6 mm2	Stent CSA>80% of the mean proximal and distal reference vessel CSA	2.25/3.5; 2.5/4; 3/6; 3.5/8; 4/10; 4.5/12;
MLD ≥80% of the mean of proximal and distal reference diameters	Complete stent apposition	MLA≥90% of the average reference lumen area or ≥100% of the lumen area of the reference segment with the lowest lumen area. MLA >9.0 mm2. MLA ≥80% of the average reference lumen area or ≥90% of the lumen area of the reference segment with the lowest lumen area
MLA ≥ distal reference lumen area	Dissections covered by the stent	Symmetric stent expansion

IVUS, intravascular ultrasound.