When I was in Huangdao, China, as part of my employer procedure I went to the hospital when I had a slight cough. As a standard requirement, I supplied blood for 7 bottles, had a chest X-Ray, temperature, ECG, blood pressure tests.
This was standard each time. The cost for this was 10 RMB, not even, US$2.00. Those who were given medicine paid next to nothing.
There's no appointment necessary. Just turn up and push in each queue to get the specialist to see you. Despite the apparent chaos things were very well organised. All test results were available within a couple of hours.
This worked very well. When I was in Beijing I had a company medical in a brand new medical centre. There were 22 tests involved. This was more orderly, but still very fast. However due to the time factor (I only had a few hours). I omitted a few which was okay since there were often more tests for one symptom. This facility was spotless with state of the art equipment, purchased in most cases from the USA.
1) That's a subsidized rate. You wouldn't get that price if you had just walked in off the street.
2) The insurance only gets you the cheap local stuff. Need anything good and you're out of luck. My MIL died over there, slowly--many trips to the hospital and the like. They used the normal system for the simple stuff like oxygen but if it mattered they paid cash to get the good stuff.
3) Quality control. There's a reason the locals much prefer American goods--they trust that they're what they're supposed to be. Our bags are normally at least half full of ordinary US goods requested by her relatives.
4) Quality control. Many of those doctors leave a
lot to be desired. My wife developed a retinal hole while we were over there. They lasered it shut. When we got home she went to a retinologist here--and found that while they had been correct in their diagnosis and treatment they couldn't hit the broad side of a barn--they didn't even realize they missed the target.
5) Plenty of utter quacks in those hospitals. The hospitals get money for referring to the quacks, the patient
thinks they're actually seeing a doctor.
6) What you are describing would be totally unacceptable by US standards--radiation without any decent reason.