A.適用于孤立性局部狹窄 B.適用于多發(fā).分散的短段狹窄 C.適用于已有鈣化的狹窄或閉塞病變 D.適用于長段狹窄或閉塞 E.適用于潰瘍性狹窄
A.15°-20° B.20°-30° C.30°-40° D.45°-60° E.65°-80°