As a medical assistant I will help my patients stay calm and relax by explain the procedure in detail and ask them if they have any questions before I perform the x-ray. In case the patient has more questions I will answer them before anything else is done. I will let them know that an x-ray is just a picture of the bone to see if its damaged or broken. It doesn't hurt or damaged you in any way its just a simple picture that will help the physician asses his/her medical need. Also I will show them the machine do that they see its nothing out of the ordinary, showing them the machine might help the patient loose the fear of taking an x-ray.
Have a good day!