Lecture on
Introduction: What is problem of PCI for calcified lesion :

Yuji Hamazaki

How to estimate severity of calcified lesion :

Junya Shite

How to treat undilatable lesion without rotablator :

Tsutomu Fujita

How to treat undilatable lesion with rotablator :

Atsunori Okamura

How to deal complications of rotablator :

Tetsuo Matsubara

A case presentation: Burr stuck during rotablator :

Yoshiaki Ito