Akademik Veri Yönetim Sistemi
ANNALS OF CLINICAL AND ANALYTICAL MEDICINE, cilt.16, sa.3, ss.197-202, 2025 (ESCI)
Aim: The aim of the study was to investigate the effects of tube current and tube voltage selection on patient dose in adult and pediatric abdominal CT protocols by analyzing them both statistically and with PCA and cluster methods. Material and Methods: A total of 24 CT phantom scans (12 pediatric and 12 adult) were performed and CTDIvol and DLP values in the dose sheet were recorded. In the scans, 50 mAs, 60 mAs, 80 mAs, and 100 mAs tube currents were used, respectively. For each mAs value, tube voltages of 80 kVp, 110 kVp, and 130 kVp were selected. Results: The loading plot obtained the relationships between the variables in the Principal Component 1 (PC1) and Principal Component 2 (PC2) space. PC1 was obtained as 84.67% and PC2 as 14.64%, and the sum of both PCs was observed to constitute 99.31% of the total variance. It was observed that the values obtained with 100 mAs and 130 kVp in CT scans had the highest heavy loadings for PC1. In cluster analysis, it was observed that all the data obtained from CT scans performed with 80 kVp at different mAs values with both adult and pediatric abdomen phantoms were in the same Group. Discussion: PCA and cluster analysis are advantageous in terms of ease of use and qualitative assessment. PCA method can be used to evaluate the compliance of radiation with standards in scans performed with different CT devices used and to examine multiple parameters simultaneously.