A CONSORT-compliant prospective randomized controlled trial: radiation dose reducing in computed tomography using an additional lateral scout view combined with automatic tube current modulation
| Autor: | Peng, Wanlin, Li, Zhenlin, Xia, Chunchao, Guo, Yingkun, Zhang, Jinge, Zhang, Kai, Li, Lei, Zhao, Fei |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
thorax
Adult Aged 80 and over Male Models Anatomic Phantoms Imaging Reproducibility of Results computed tomography Clinical Trial/Experimental Study Middle Aged Radiation Dosage Young Adult Humans Female Radiography Thoracic quality control radiation dose Tomography X-Ray Computed Research Article Aged |
| Zdroj: | Medicine |
| ISSN: | 1536-5964 0025-7974 |
| Popis: | Background: Radiation exposure has been a hot point in research field of computed tomography (CT). Recently, automated tube current modulation (ATCM) has emerged as an important technique to reduce radiation exposure. Many studies have shown that the difference in scout view would affect modulation. This prospective randomized controlled study is aimed to investigate the impact of an additional lateral scout view on radiation dose and image quality in CT using ACTM. Methods: Combined with ATCM (Care Dose 4D) on multidetector CT, 2 thoracic phantom CT image series were acquired in which planning was conducted with either an anteroposterior (AP) or an AP-lateral scout view. Also, 410 patients underwent thoracic CT examinations using Care Dose 4D modulation and were randomized to either a scan planned with an AP-lateral scout or a single AP scout. Effects of the different scout views on applied effective milliampere seconds (mAs), volume CT dose index (CTDIvol) and dose–length–product (DLP) were analyzed. The quality of patient CT images was also assessed. Data were analyzed using independent t tests and linear correlation analysis. Results: Compared with AP groups, the mean CTDIvol (phantom, 0.89 ± 0.08 vs 1.36 ± 0.26 mGy, P |
| Databáze: | OpenAIRE |
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