PERIOD

You guys should know,

HDR afterloader needs to change its source every 3 months. Tomorrow we are going to change the source for one of our machines. As I know, that most of the hospitals only have one. It's lucky that we got three. So, this will be my second time to see how they change the source. Of course, the most important thing is to do the calibration stuffs. Does it sound interesting? I guess no...

Why do I sound so exciting? Is the engineer HOT?

Yabee~~~