Evaluating Image Quality and Radiation Dose in Low-Dose Thoraco-Abdominal CT Angiography with a Tin Filter for Patients with Aortic Disease
<b>Background:</b> 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. <b>Methods:</b> In this retrospecti...
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MDPI AG
2024-02-01
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| Series: | Journal of Clinical Medicine |
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| Online Access: | https://www.mdpi.com/2077-0383/13/4/996 |
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| author | Chang Hoon Oh Soo Buem Cho Hyeyoung Kwon |
| author_facet | Chang Hoon Oh Soo Buem Cho Hyeyoung Kwon |
| author_sort | Chang Hoon Oh |
| collection | DOAJ |
| description | <b>Background:</b> 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. <b>Methods:</b> 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. <b>Results:</b> The mean dose for the TF100kV group was significantly lower (DLP 128.25 ± 18.18 mGy*cm vs. 662.75 ± 181.29, <i>p</i> < 0.001; CTDIvol 1.83 ± 0.25 mGy vs. 9.28 ± 2.17, <i>p</i> = 0.001), with an effective dose close to 2.3 mSv (2.31 ± 0.33 mSv; <i>p</i> < 0.001). The TF100kV group demonstrated greater dose efficiency (FOM, thoracic aorta: 36.70 ± 22.77 vs. 13.96 ± 13.18 mSv<sup>−1</sup>, <i>p</i> < 0.001) compared to the ST100kV group. <b>Conclusions:</b> Dedicated low-dose TACTA using a tin filter can significantly reduce the radiation dose while maintaining sufficient diagnostic image quality. |
| first_indexed | 2024-03-07T22:27:54Z |
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| id | doaj.art-b547b726b9a245b8a3810ebf41f01a42 |
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| language | English |
| last_indexed | 2024-03-07T22:27:54Z |
| publishDate | 2024-02-01 |
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| series | Journal of Clinical Medicine |
| spelling | doaj.art-b547b726b9a245b8a3810ebf41f01a422024-02-23T15:21:59ZengMDPI AGJournal of Clinical Medicine2077-03832024-02-0113499610.3390/jcm13040996Evaluating Image Quality and Radiation Dose in Low-Dose Thoraco-Abdominal CT Angiography with a Tin Filter for Patients with Aortic DiseaseChang Hoon Oh0Soo Buem Cho1Hyeyoung Kwon2Department of Radiology, Ewha Womans Mokdong Hospital, College of Medicine, Ewha Womans University, Seoul 07985, Republic of KoreaDepartment of Radiology, Ewha Womans Seoul Hospital, College of Medicine, Ewha Womans University, Seoul 07804, Republic of KoreaDepartment of Radiology, Chungnam University Hospital, School of Medicine, Chungnam University, Daejeon 35015, Republic of Korea<b>Background:</b> 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. <b>Methods:</b> 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. <b>Results:</b> The mean dose for the TF100kV group was significantly lower (DLP 128.25 ± 18.18 mGy*cm vs. 662.75 ± 181.29, <i>p</i> < 0.001; CTDIvol 1.83 ± 0.25 mGy vs. 9.28 ± 2.17, <i>p</i> = 0.001), with an effective dose close to 2.3 mSv (2.31 ± 0.33 mSv; <i>p</i> < 0.001). The TF100kV group demonstrated greater dose efficiency (FOM, thoracic aorta: 36.70 ± 22.77 vs. 13.96 ± 13.18 mSv<sup>−1</sup>, <i>p</i> < 0.001) compared to the ST100kV group. <b>Conclusions:</b> Dedicated low-dose TACTA using a tin filter can significantly reduce the radiation dose while maintaining sufficient diagnostic image quality.https://www.mdpi.com/2077-0383/13/4/996tin filterthoraco-abdominal CT angiographyradiation exposureimage qualitydiagnostic imaging |
| spellingShingle | Chang Hoon Oh Soo Buem Cho Hyeyoung Kwon Evaluating Image Quality and Radiation Dose in Low-Dose Thoraco-Abdominal CT Angiography with a Tin Filter for Patients with Aortic Disease Journal of Clinical Medicine tin filter thoraco-abdominal CT angiography radiation exposure image quality diagnostic imaging |
| title | Evaluating Image Quality and Radiation Dose in Low-Dose Thoraco-Abdominal CT Angiography with a Tin Filter for Patients with Aortic Disease |
| title_full | Evaluating Image Quality and Radiation Dose in Low-Dose Thoraco-Abdominal CT Angiography with a Tin Filter for Patients with Aortic Disease |
| title_fullStr | Evaluating Image Quality and Radiation Dose in Low-Dose Thoraco-Abdominal CT Angiography with a Tin Filter for Patients with Aortic Disease |
| title_full_unstemmed | Evaluating Image Quality and Radiation Dose in Low-Dose Thoraco-Abdominal CT Angiography with a Tin Filter for Patients with Aortic Disease |
| title_short | Evaluating Image Quality and Radiation Dose in Low-Dose Thoraco-Abdominal CT Angiography with a Tin Filter for Patients with Aortic Disease |
| title_sort | evaluating image quality and radiation dose in low dose thoraco abdominal ct angiography with a tin filter for patients with aortic disease |
| topic | tin filter thoraco-abdominal CT angiography radiation exposure image quality diagnostic imaging |
| url | https://www.mdpi.com/2077-0383/13/4/996 |
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