Coronary angiography, cardiac catheterization is the mirror of the demon, whether there is a demon, a light will shine out. To do intervention, into the balloon / stent is like playing tai chi, pushing around, with the lesion over. Cardiac catheterization on two things, catheter and guidewire, nothing mysterious Do cardiac catheterization know the relative motion. The movement of the catheter is just two kinds, one is the back and forth movement, one is the rotation movement, the master is the organic combination of the two types of movement, there is a loose and tight, in and out freely, after doing the cardiac catheterization, there should not be too much doubt Cardiac catheterization is the gold standard for diagnosis Doing intervention is the same as demining, as long as you walk, it is possible to hit the mine, unless you do not move in place, do not walk, will never touch the mine.