can any one tell me if they have had a mri scan to check if your heart arteries are blocked. mines due on the 15th of sep iv had ecg and lung test all ok but still geting chest pain or it feels like im holding my breath i cant belive its anxiety but this test should put me right they say what happens if i have a panick attack. and they say im to injected with this stuff that makes ur heart beat faster so they can see if theirs any blockages.