Comparison of Radiation Dose and Image Quality Between Split-Filter Twin Beam Dual-Energy Images and Single-Energy Images in Single-Source Contrast-Enhanced Chest Computed Tomography
| Autor: | Ning Wu, Shou-Xin Yang, Ruo-Bing Wang, Li-Na Zhou, Shi-Jun Zhao, Ya-Wen Wang |
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| Rok vydání: | 2021 |
| Předmět: |
Adult
Male China Image quality media_common.quotation_subject Contrast Media Computed tomography Radiation Dosage Ct dose index Radiography Dual-Energy Scanned Projection Thoracic Diseases Humans Contrast (vision) Medicine Radiology Nuclear Medicine and imaging Aged Retrospective Studies media_common Aged 80 and over medicine.diagnostic_test Dual energy business.industry Radiation dose Reproducibility of Results Middle Aged Radiographic Image Enhancement Female Radiography Thoracic Tomography X-Ray Computed Nuclear medicine business |
| Zdroj: | Journal of Computer Assisted Tomography. 45:888-893 |
| ISSN: | 1532-3145 0363-8715 |
| Popis: | OBJECTIVE To compare image quality and radiation dose of split-filter TwinBeam dual-energy (SF-TBDE) with those of single-energy images (SECT) in the contrast-enhanced chest computed tomography (CT). METHODS Two hundred patients who underwent SF-TBDE (n = 100) and SECT (n = 100) contrast-enhanced chest scanning were retrospectively analyzed. The contrast-to-noise ratio (CNR) and figure of merit (FOM)-CNR of 5 structures (lung, aorta, pulmonary artery, thyroid, and erector spinae) were calculated and subjectively evaluated by 2 independent radiologists. Radiation dose was compared using volume CT dose index and size-specific dose estimate. RESULTS The CNR and FOM-CNR of lung and erector spinae in SF-TBDE were higher than those of SECT (P < 0.001). The differences in the subjective image quality between the 2 groups were not significant (P = 0.244). Volume CT dose index and size-specific dose estimate of SF-TBDE were lower than those of SECT (6.60 ± 1.56 vs 7.81 ± 3.02 mGy, P = 0.001; 9.25 ± 1.60 vs. 10.55 ± 3.54; P = 0.001). CONCLUSIONS The SF-TBDE CT can provide similar image quality at a lower radiation dose compared with SECT. |
| Databáze: | OpenAIRE |
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