I recieved a CTA with contrast. After going through procedure, nurse said the timing of the cat scan machine was off. And did not caputure necessary information. She suggested I go through the procedure a second time. With radiation and contrast risks, I decided not to try it a second time as there was no guarantee the same error would not occur. I heard the same thing happened to another patient a week earlier. I was not charged and I would not recommend SimonMed.