The inefficiency in the use of expensive resource such as Magnetic Resonance Imaging (MRI) will lead to long delays in patient examination which has potential influence on patients care. The main purpose of this study is to improve MRI utilization and to reduce the waiting time of patients including outpatients, inpatients and emergency patients. Scheduling rules are designed on the basis of different facility-level and multi-class examinations. As a result, assigning examination tasks according to the difference of facilities and setting fixed service time can balance examination tasks. Considering the randomness of emergency patients' arrive rate, reasonable slacking time slots performs better, compared with setting reserved time slots. Besides, setting the length of time slots equal to the length of service time can increase the number of served patients and not increase the waiting time of patients obviously.
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