Organizations try to turn over the internal affairs of the organization and make their body as small as possible due to various reasons . Alvani believes that benefits resulted by outsourcing are factors such as decreasing expenses, organization’s concentration on its main activities, saving the moment for making the internal affairs of the structure, decreasing the risk by entering in partnership with another module in an unsafe business environment, improving consumer service, decreasing the company’s employees, creating the sense of competition in various sections of the organization . Outsourcing was used to lead to an efficient management of the resources and increasing the modality and consent of various parties. Considering the existence of the facility of outsourcing in so many sections of the hospital, we could benefit from it in governing the hospital and we could evaluate the success rate by defining specific indexes . The patients’ satisfaction is an important scale to evaluate services or received product because satisfied patients are more eager to continue using medical and healthcare services, keeping their contact with the service supplier and following the medical and control regimes . Con Vikticle et al. defined the care quality as the satisfying of physical needs with providing professional care, social-mental support, satisfaction with care  and ensuring the presence of general and multi-dimensional cares to the patient . Many expertises consider the patients’ rate of consent from the hospital aims as important indexes of efficiency and aim modality in various sections . It shows that studying the patients’ consent is important outputs of the healthcare systems  and evaluating the care by the patient is also one of the major methods to measure and scale the quality of medical and healthcare services . Moreover, Peiravi also mentioned in his research that in Iran, the Ministry of Health has obligated all hospitals to do periodic evaluations regarding the patients’ satisfaction and also required interventions to increase the patients’ satisfaction, since 2011, so that it can comply with its main mission . Considering the mentioned issues about the patients’ satisfaction, we should also point out the important issue that although nowadays companies move toward outsourcing, it represents a part of their liability in the world, so that they can achieve benefits such as decreasing expenses to get hold of advanced technology. Nevertheless, the difference in organizational cultures and complexity of managing created relations means that outsourcing could guide to failure or lack of satisfaction . Therefore, all the above-mentioned issues confirmed that we should select a method that the present services to the patients should work with, having the lowest expense and highest quality, so that the hospital’s expenses could be minimized on one hand and the hospital should be enabled to continue working and present the highest quality services to the patients on the other hand. This way, not only their expenses decrease but they also achieve their satisfaction. Also, this study was executed while aiming to research the influence of outsourcing on the efficiency and affectivity of Radiology Unit services in Hospitals of Tehran City.