question: Hi I m a 47year old male who recently went for a myocardial perfusion scan and the results letter states; moderate severity stress induced ischemia within the anticipated distribution of the LAD but also within the RCA. The elevated TID ratio 1.26 may occasionally be a marker of balanced three vessel disease. My ECG showed that I also have got Left Bundle Branch Block. I have an appointment to see the Cardiologist next month but I am worried what to expect! Can you please give me some insight and is the TID ratio bad. I have tried my Doctor and Cardiologist with no joy!!