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Evaluating Image Quality and Radiation Dose in Low-Dose Thoraco-Abdominal CT Angiography with a Tin Filter for Patients with Aortic Disease
- Title
- Evaluating Image Quality and Radiation Dose in Low-Dose Thoraco-Abdominal CT Angiography with a Tin Filter for Patients with Aortic Disease
- Authors
- Oh; Chang Hoon; Cho; Soo Buem; Kwon; Hyeyoung
- Ewha Authors
- 조수범; 오창훈
- SCOPUS Author ID
- 조수범; 오창훈
- Issue Date
- 2024
- Journal Title
- Journal of Clinical Medicine
- ISSN
- 2077-0383
- Citation
- Journal of Clinical Medicine vol. 13, no. 4
- Keywords
- diagnostic imaging; image quality; radiation exposure; thoraco-abdominal CT angiography; tin filter
- Publisher
- Multidisciplinary Digital Publishing Institute (MDPI)
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- Background: We aimed to compared radiation exposure and image quality between tin-filter-based and standard dose thoraco-abdominal computed tomography angiography (TACTA) protocols, aiming to address a gap in the existing literature. Methods: In this retrospective study, ninety consecutive patients undergoing TACTA were included. Of these, 45 followed a routine standard-dose protocol (ST100kV), and 45 underwent a low-dose protocol with a tin filter (TF100kV). Radiation metrics were compared. The signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), and figure of merit (FOM) were calculated for the thoracic and abdominal aorta and right common iliac artery. Two independent readers assessed the image noise, image contrast, sharpness, and subjective image quality. Results: The mean dose for the TF100kV group was significantly lower (DLP 128.25 ± 18.18 mGy*cm vs. 662.75 ± 181.29, p < 0.001; CTDIvol 1.83 ± 0.25 mGy vs. 9.28 ± 2.17, p = 0.001), with an effective dose close to 2.3 mSv (2.31 ± 0.33 mSv; p < 0.001). The TF100kV group demonstrated greater dose efficiency (FOM, thoracic aorta: 36.70 ± 22.77 vs. 13.96 ± 13.18 mSv−1, p < 0.001) compared to the ST100kV group. Conclusions: Dedicated low-dose TACTA using a tin filter can significantly reduce the radiation dose while maintaining sufficient diagnostic image quality. © 2024 by the authors.
- DOI
- 10.3390/jcm13040996
- Appears in Collections:
- 의과대학 > 의학과 > Journal papers
- Files in This Item:
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jcm-13-00996.pdf(3.08 MB)
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