International Circulation: Do you think recent evidence to the success of a retrograde approach to CTO recanalization will expand the use of this technique? What technologies or methods are still in need of improvement?
　　Dr. Kinoshita: With the introduction of the retrograde approach， the success rate of CTO is improving globally. While it is a common technique in Japan， the retrograde approach is still special in foreign countries. Many doctors have an interest in retrograde approach. In my opinion， the wiring for the antegrade approach needs a more delicate and careful technique. After the introduction of the retrograde approach， some operators have become a little rough and I am afraid that many people do not care about proper wire manipulation. In the PCI field， delicate wire manipulation is very important， in both CTO and other complex lesions. In the CTO field， some doctors who may want to perform a retrograde approach have only limited experience with the antegrade approach. My mentors Drs. Suzuki and Katoh suggest that the antegrade approach is a basic technique and more important than the retrograde approach. If operators cannot manipulate the wire from the antegrade approach well， they will avoid using the retrograde approach because it causes more complications.
　　《国际循环》：你觉得最近CTO再通逆向技术的成功是否会拓展这一技术的应用？哪些技术或方法还需要进一步改进？
　　Kinoshita教授：随着逆向技术的引入，全球CTO成功率都得到了改善。逆向CTO在日本是一个常规技术，但在其他国家逆向CTO技术仍然使用较少。很多医生对逆向CTO感兴趣。在我看来，前向技术钢丝的操作需要在技术上更为精细和仔细。在引入逆向技术之后，一些术者操作有些粗糙，我担心很多术者不关心正确的钢丝操作。在PCI领域，精细地操作钢丝非常重要，无论是CTO还是其他复杂病变都如此。在CTO领域，一些想要使用逆向技术的医生可能此技术的经验有限。我的导师Suzuki教授和Katoh教授指出，前向技术是一个基本的技术，比逆向技术更重要。如果术者不能在前向技术时很好地操作钢丝，应当避免使用逆向技术，因为逆向技术所引起的并发症更多。