I have chronic mesenteric vein thrombosis(it's in the superior mesen. vein) & have monthly trips to the ER for severe abdominal pain. They always want to do a CT scan. I've had 9 scans in the last year & a half , & every doctor says that's way too many, but they want to do " just one more". Last time they did one, 12 hours later they came back & wanted to do another & I told them no way. I'm 60 & need to know when to & when not to have a scan.