Introduction: Financial resources in sector of health are limited and demands to medical services are unlimited, also new services and technologies have been added to competition market that was leads to growing in use of health resources. Awareness from prescription and analysis of costly points can help to optimize the costs of health care.
Materials & methods: The present article examines the way of CT scans prescription in insured health insurance organization in zone 4 of country in the first half of 2012. Sample size was appointed by Morgan table and cluster method was used. Samples were selected from 26 medical radiation centers in 20 cities and data was analyzed by using SPSS software version 21.
 Findings: The result of present study illustrated that 84% of CT scan costs were in governmental part that share of medical universities was 69% and share of other non-academic governmental part was 15%. Most rates of prescriptions given to specialists with 87.5% prescriptions and 82.5% of total cost of prescriptions were studied. 86.2% of prescriptions were prescribed by 10 specialists. Most of prescriptions were belonged to neurology group with frequency equal 26.5% of total prescriptions. 68.7% of prescriptions have been requested simply and 31.3 % of them have a spiral request. 80.2% requests and 67.8% of prescriptions cost were without contrast. Brain CT scan have allocated the most frequency (43.2%) and costs (29.3%).
Discussion & Conclusion: Acquisition of manufacturer centers variables, type of professions, specialty, CT scan method, type of C T scan, the number of prescribed limb and the number of limb which CT scan have been done on it are effective in costs.