Our dog was taken there for MRI scan was discharge...

Our dog was taken there for MRI scan was discharged with air in her lungs , when we phoned the hospital and gave details of the condition the dog was in , they suggested that it was probably due to discomfort after the procedures that had taken place.we had to rush the dog back ,then just as she was about to be discharged again ,she had acquired an embolism.we we're given the impression that they are the best in the country ,our experience doesn't suggest this.