Some hospitals in the United States find that their need for radiologists to read X-rays is volatile during the evening and early morning hours, especially between 2:00 and 6:00 a.m. This is because the number of emergency room visits needing X-rays is usually lower than those required during daytime operating hours. There is a recent trend where hospitals in the United States are contracting radiologists from countries such as Australia to read the electronically-transmitted X-rays during the evening and early morning hours. This is an example of