Objective: The objective of this study is to determine how with changing the size of pitch factor at CT device we can affect the CT recording quality. Hypothesis of research: By increasing the pitch factor we do not affect the CT recording quality. Sample of examinees and methods: By using keywords syntax and searching the literature we found 170 potentially relevant articles. Following the application of the exclusion and inclusion criteria, we reviewed the complete texts of 39 articles, of which 20 were finally included in the analysis of our research, because they corresponded to the established image quality criteria and radiation dose in relation to the pitch factor. Results: Of 11 studies which compared low pitch MSCT and high pitch DSCT, in 8 studies (72.7%) it was found that the subjective image quality is the same. In 3 studies (27.3%), subjective image quality was lower with low pitch MSCT than with high pitch DSCT. In all eleven studies which compared low pitch MSCT and high pitch DSCT, at high pitch DSCT a lower radiation dose was used and at low pitch MSCT a higher dose of radiation was used. Three papers compared only low and high pitch at MSCT devices. In all three papers, subjective image quality was found to be equal regardless of whether low or high pitch was used. When using low pitch MSCT to achieve the same image quality as at high pitch MSCT, higher radiation doses were used in all three cases. In a total of 6 papers which compared the subjective quality of low pitch DSCT and high pitch DSCT, in three studies it was found that the image quality is the same, and in three cases the image quality was lower with low pitch DSCT. However, in all 6 cases of low pitch DSCT, higher radiation doses were used compared to high pitch DSCT in order to achieve better subjective image quality in 50% of these studies. Conclusion: This research did not find that there was a statistically significant influence of pitch factor on the image quality at multilayer CT devices, but we have confirmed that high pitch factor significantly affects the reduction of radiation dose of patients.