ANALYSIS OF DIFFERENCES IN IMAGE QUALITY WITH VARIATIONS IN SLICE THICKNESS IN CT-SCAN BRAIN EXAMINATIONS WITH TRAUMA CASES AT THE RADIOLOGY INSTALLATION OF RSI SITI RAHMAH PADANG

Abstract

Research has been carried out on the analysis of differences in image quality with slice thickness variations in CT-Scan brain examinations with trauma cases at the Radiology Installation at RSI Siti Rahmah Padang. This study aims to determine the difference in image quality with varying slice thicknesses of 3 mm, 5 mm, and 7 mm in CT-Scan brain examinations with trauma cases and what slice thickness is capable of producing optimal image quality in establishing a diagnosis in CT-Scan brain examinations. with trauma cases. This research was conducted in January 2022 - June 2022 with a quantitative type of research with experimental methods, using purposive sampling techniques and questionnaire data distributed to respondents were processed using the weight mean score formula and the SPSS Friedman method. According to the weight mean score formula, the highest average value for the slice thickness variations of 3 mm, 5 mm and 7 mm is a slice thickness of 3 mm with an average value of 3.64, contrast resolution has an average value of 3.67, noise is 3. 49 and the results of the CT-Scan brain examination in the bone window in trauma cases had an average of t3.74. Based on the SPSS results of the Friedman method, it was found that there was a significant difference in the results of slice thickness variations of 3 mm, 5 mm and 7 mm in the CT-Scan brain examination with trauma cases because (p-value < 0.05), this shows that Hₒ was rejected and Hₐ was accepted. A good slice thickness variation for showing trauma on a CT-Scan brain examination is a slice thickness of 3 mm in the bone window, because if there is a very small fracture it can be seen more clearly.