Obesity Causes Problems in Accuracy of Reading and Diagnosing X-Rays
According to a study by radiologists at the Massachusetts General Hospital in Boston an increasing number of obese people cannot receive full or accurate diagnoses and medical care because they are too big to fit into scanners or their fat is too dense for x-rays or sound waves to penetrate. This study reviewed the findings of standard x-rays, CT scans, MRI and PET scans.
Ultrasounds are the most limited because the ultrasound beam does not get to the organs adequately enough for a picture.
Of all of the studies MRI seem to work the best.