A family member went on the ornish-like diet + atorvastatin for 7 years* after open heart surgery for block in the left main.
Hen tested (via ultra fast CT scan) the blood flow after the experiment -- there was no change.
It may sound depressing, but it's actually very good for what is normally a progressive disease.
The experimenter is currently now doing another 7 year experiment, eating a somewhat healthier than normal diet + statins.
After getting off the ornish diet, there was hardly any change in total cholesterol.
*The diet was ornish-like because it was hard to get anything to eat when going out. The experimentar ate salmon if there was nothing better.