Pregledni rad
https://doi.org/10.55378/rv.49.2.3
Impact of Pitch Factor on CT Examination Quality
Dražen Horvatinec
; Clinical Hospital “Sveti Duh”, Zagreb, Croatia
*
Damir Ciprić
; University of Applied Health Sciences, Zagreb, Croatia
Frane Mihanović
; University of Split, Faculty of Health Sciences, Split, Croatia
* Dopisni autor.
Sažetak
Aim: The objective of this study is to determine whether changing the pitch factor on CT devices affects the quality of the CT scan.
Methods: By using a syntax of keywords and searching the literature, we found 170 potentially relevant articles. Following the application of exclusion and inclusion criteria, we reviewed the complete texts of 39 articles, of which 20 were finally included in the analysis because they met the established criteria for image quality and radiation dose in relation to the pitch factor.
Results: Low Pitch MSCT vs. High Pitch DSCT (11 studies): In 8 studies (72.7%), it was found that the subjective image quality was the same. In 3 studies (27.3%), subjective image quality was subjectively lower with low pitch MSCT than with high pitch DSCT. Crucially, all 11 studies confirmed that a lower radiation dose was used with high pitch DSCT, and a higher dose was used with low pitch MSCT. Low Pitch vs. High Pitch MSCT (3 studies): All three papers found that the subjective image quality was equal regardless of whether low or high pitch was used. In all three cases, low pitch MSCT used higher radiation doses to achieve the same image quality as high pitch MSCT. Low Pitch vs. High Pitch DSCT (6 studies). In three studies, image quality was found to be the same, and in three cases, the image quality was subjectively lower with low pitch DSCT. However, in all 6 cases of low pitch DSCT, higher radiation doses were used compared to high pitch DSCT.
Conclusion: This research did not find a statistically significant influence of the pitch factor on image quality in multi-slice CT devices, but it confirmed that a high pitch factor significantly contributes to the reduction of the patient’s radiation dose.
Ključne riječi
computed tomography, pitch factor, CT scan
Hrčak ID:
337282
URI
Datum izdavanja:
4.11.2025.
Posjeta: 21 *