The four indexes including the total vessel area(TVA),lumen area(LA),plaque area(PA)and percent area stenosis(PAS)were evaluated with t test individually in pre operation,post stenting and high pressure balloon re expansion groups.

• 将血管的总截面积、管腔面积、斑块面积、面积狭窄率四个指标的术前、STENTING后、高压球囊再扩张后三种状态分别进行配对 t-检验。