Some of the tools for this had been around for a hundred years, but it had only been used as a diagnostic technique when there was changes in camera technologies and things like that, that allowed this to be done for real operations.
有些器械大约都有100年了， 但直到80年代 才被用于诊断技术， 当时照相这类技术有所改进， 使它可以真正用于手术。