The questionnaire was designed based on the available literature, consisted of two sections: the first section included demographic items like age, gender and work experience. The second section consisted of seven subscales. The first subscale aimed at measuring the Suitability of PACS for tasks (5 questions), the second subscale, which tapped into self-descriptiveness of PACS includes 4 questions, the third subscale measured ability of user control (4 questions); the fourth subscale aimed at measuring PACS compatibility with the user's needs (4 questions); the fifth subscale measured fault tolerance of the PACS (5 questions); the sixth subscale measured suitability of PACS system for the personalization (3 questions), and the seventh subscale measured the suitability of learning of the PACS (3 questions). The answers on each item were measured on a 5-point Likert type scale, totally disagree =5, disagree =4, no idea=3, agree =2 and totally agree =1.In order to evaluate the validity, the primary questionnaire was reviewed by medical informatics and health information management experts. Utilizing the experts’ suggestions, the questionnaire was rewritten and became more focused. Then we piloted the questionnaire on forty research communities randomly selected from employees who were working in the teaching hospitals. Participants in the pilot study were excluded from the study. Cronbach alpha was used to calculate the reliability of the instruments of 0.921 Next, further revisions were made and some statements were rephrased. Lastly, the final version of the anonymous questionnaire was distributed among the employees in the hospitals and they were asked to complete the questionnaire.