(Ivanhoe Newswire) – Obese patients who have problems after gastric bypass surgery may have even more hurdles because of their weight.Researchers found 27-percent of patients in their study who weighed more than 450 pounds needed imaging to diagnose a problem after surgery but were denied it because they were above the weight restrictions for the equipment. Four of those patients instead had to have surgery to check for suspected leaks – one of the most common gastric bypass complications.