Evaluation of Organ Dose and Image Quality Metrics of Pediatric CT Chest-Abdomen-Pelvis (CAP) Examination: An Anthropomorphic Phantom Study

The aim of this study is to investigate the impact CT acquisition parameter setting on organ dose and its influence image quality metrics in pediatric phantom during examination. was performed 64-slice multidetector scanner (MDCT) Siemens Definition AS (Siemens Sector Healthcare, Forchheim, Germany) using various CAP protocols (P1–P9). Tube potential for P1, P2, P3 were fixed at 100 kVp while P4, P5, P6 80 with used reference noise values. P7, P8, P9 modification P1 changes slice collimation, pitch factor, tube current modulation (TCM), respectively. TLD-100 chips inserted into slab number 7, 9, 10, 12, 13, 14 represent thyroid, lung, liver, stomach, gonads, skin, metrics, signal ratio (SNR) contrast (CNR) values obtained from console. As a result, indicates reduction absorbed up 20% 50% along reducing voltage, current, increasing collimation. There no significant difference (p > 0.05) observed between metrics.