DO YOU KNOW WHAT IS THE DEFERENCE BETWEEN RADIATION SAFETY OFFICER (RSO) IN SAUDI KINGDOM AND THE INTERNATIONAL RSO?

Basically there is no obvious difference between the Radiation Safety Officer in Saudi Arabia and the other international Bodies. it's just related to the Regulations and requirements for the RSO qualifications. In Saudi Arabia, there are different types of radiation protection practices with one RSO Examination for the qualifying process along with a particular part of questions for each practice. In the other International Regulations there are Certified Health Physicist, Certified Medical Physicist, and Certified Radiation Protection adviser, and all of them can act as a RSO in case of passing the RSO Examination. 

the difference is the RSO in Saudi Arabia must be authorized by Saudi authorites