Joey<br />
ok... it is interpreting the image and computer calcualtions. After processing the study, the physician then will look at the regions of interest that the technologist drew around the left ventricle and watch the way the heart squeezes down. If the regions include say some of the atrium and the left ventricle or were drawn too tightly around the left ventricle or too wide- the  EF the computer will calculate will either be too high or too low. A good technologist with experience will probably have a good idea of what the EF will be just by looking at he cine of the heart squeezing BUT it is the radiologist or cardiologist &quot;trained eye&quot; that has the final say. He may want the study to be reprocessed etc.  It is not just the number that is important. The physician will be looking at which areas of the heart are squeezing which ones are not working as well. Is there a bulging or anyeryms somewhere etc. Bottom line, if the technologist tells you a number and the physician did not agree with how something was processed, the new number may be different. And say, the patient is told one thing by the technologist and another by the physician.... this leads to problems. So the real reading or interpreting should come from the the doc.<br />
 does that help to clarify? <br />
Have you heard anything yet, Joey?