View : 63 Download: 0
Effect of low tube voltage and low iodine concentration abdominal CT on image quality and radiation dose in children: preliminary study
- Effect of low tube voltage and low iodine concentration abdominal CT on image quality and radiation dose in children: preliminary study
- You S.K.; Choi Y.H.; Cheon J.-E.; Kim W.S.; Kim I.-O.; Lee S.M.; Cho H.-H.
- Ewha Authors
- Issue Date
- Journal Title
- Abdominal Radiology
- Abdominal Radiology vol. 44, no. 5, pp. 1928 - 1935
- Children; Computed tomography; Dose reduction; Iodine concentration; Low tube voltage
- Springer New York LLC
- SCIE; SCOPUS
- Document Type
- Purpose: To evaluate the image quality of a double-low protocol (low tube voltage and low iodine concentration) for abdominal CT in children. Materials and methods: The double-low protocol was compared to the conventional protocol in pediatric patients weighing less than 40 kg from May 2016 to December 2016. Double-low protocol (Group A, n = 18): tube voltage, 70 kVp; and iodine concentration,: 250 mgI/mL versus Conventional protocol (Group B, n = 13): tube voltage, 80–100 kVp; and iodine concentration, 350 mgI/mL. Mean attenuation, noise, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) were compared between the two groups. Image contrast, noise, beam-hardening artifacts, and overall image quality were subjectively scored. Reader performance for correctly differentiating two groups by visual assessment was evaluated. Radiation dose and total iodine load were recorded. Results: The mean attenuations of the portal vein and liver and the mean image noise in Group A were higher than in Group B (p = 0.04, 0.03, 0.004, respectively). The mean SNR and CNR of the main portal vein and liver were lower in Group A without any statistically significant difference. There were no statistically significant differences between the two groups in qualitative analysis (image contrast, image noise, and overall image quality) with substantial agreement between the reviewers (weighted kappa values; 0.59–0.76). Significantly diminished radiation dose and iodine load were observed in Group A compared with Group B (25.0%, 36.8% reduction; p = 0.007, 0.006, respectively). Conclusion: The double-low protocol was feasible for pediatric abdominal CT and reduced both radiation dose and iodine load, while maintaining image quality. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.
- Appears in Collections:
- 의료원 > 의료원 > Journal papers
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.