The global coronavirus pandemic 2019 (COVID-19) turned the world upside down with over 170 million infections and over 3.5 million deaths worldwide. A preferred method for the diagnosis of COVID-19 infection is reverse transcription polymerase chain reaction analysis (RT-PCR test). However, chest CT is often used in positive or suspected COVID-19 patients due to regional preferences, lack of availability of PCR tests and false-negative PCR tests, and to monitor disease progression, complications, and treatment responses. Because CT uses ionizing radiation and is a major cause of radiation exposure from diagnostic medical imaging procedures of the general population, the development of low-dose CT imaging protocols for Covid patients is highly desirable. In this paper we wanted to show, using systematic review of the literature, which technical parameters would be desirable when recording chest CT in COVID-19 patients, so that the radiation dose is as low as possible providing sufficient diagnostic value of the examination. International variations in the use of different CT protocols and ways to protect radiological technologists from the virus itself will also be analyzed.