Muhammad, Nor Azura and Kayun, Zunaide and Abu Hassan, Hasyma and Wong, Jeannie Hsiu Ding and Ng, Kwan Hoong and Karim, Muhammad Khalis Abdul (2021) Evaluation of organ dose and image quality metrics of pediatric CT chest-abdomen-pelvis (CAP) examination: An anthropomorphic phantom study. Applied Sciences, 11 (5). p. 2047. ISSN 2076-3417, DOI https://doi.org/10.3390/app11052047.
Full text not available from this repository.Abstract
Featured Application We evaluate and propose a method for evaluating optimized CT protocol for pediatric-based figure of merit and image performance metrics. The aim of this study is to investigate the impact of CT acquisition parameter setting on organ dose and its influence on image quality metrics in pediatric phantom during CT examination. The study was performed on 64-slice multidetector CT scanner (MDCT) Siemens Definition AS (Siemens Sector Healthcare, Forchheim, Germany) using various CT CAP protocols (P1-P9). Tube potential for P1, P2, and P3 protocols were fixed at 100 kVp while P4, P5, and P6 were fixed at 80 kVp with used of various reference noise values. P7, P8, and P9 were the modification of P1 with changes on slice collimation, pitch factor, and tube current modulation (TCM), respectively. TLD-100 chips were inserted into the phantom slab number 7, 9, 10, 12, 13, and 14 to represent thyroid, lung, liver, stomach, gonads, and skin, respectively. The image quality metrics, signal to noise ratio (SNR) and contrast to noise ratio (CNR) values were obtained from the CT console. As a result, this study indicates a potential reduction in the absorbed dose up to 20% to 50% along with reducing tube voltage, tube current, and increasing the slice collimation. There is no significant difference (p > 0.05) observed between the protocols and image metrics.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Higher Education (Malaysia), Universiti Putra Malaysia |
| Uncontrolled Keywords: | Computed tomography; Absorbed dose; Signal–; Noise ratio; Contrast–; Noise ratio; Figure of merit |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics Q Science > QD Chemistry |
| Divisions: | Faculty of Medicine |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 18 Feb 2022 02:24 |
| Last Modified: | 18 Feb 2022 02:24 |
| URI: | http://eprints.um.edu.my/id/eprint/26281 |
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