| 钟朝辉,贺文,陈疆红.迭代重建技术(iDose4)在肺部低剂量筛查中的应用[J].中国医学影像技术,2012,28(12):2248~2251 |
| 迭代重建技术(iDose4)在肺部低剂量筛查中的应用 |
| Application of low-dose chest CT screening with iterative reconstruction technique (iDose4) |
| 投稿时间：2012-07-18 修订日期：2012-09-10 |
| DOI： |
| 中文关键词: 胸部 体层摄影术,X线计算机 迭代重建 辐射剂量 |
| 英文关键词:Chest Tomography, X-ray computed Iterative reconstruction Radiation dosage |
| 基金项目: |
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| 中文摘要: |
| 目的 探讨iDose4迭代重建技术在胸部低剂量筛查的方案。 方法 选取120例胸部体检者,根据不同的体质量指数(BMI)分为A组(BMI≤22)、B组(224平台对各受检者图像分别进行FBP,iDose3、Dose5、iDose7重建。记录3组的CT剂量指数(CTDIvol)、剂量长度乘积(DLP),并估算有效剂量(ED)。 结果 所获图像质量均可满足诊断要求。A组、B组和C组的CTDIvol均值分别为(0.69±0.08)mGy、(1.09±0.17)mGy和(1.95±0.43)mGy,ED均值分别为(0.33±0.05)mSv、(0.50±0.11)mSv和(0.87±0.23)mSv。 结论 应用iDose4迭代重建技术,根据受检者的BMI,可获得满意的胸部低剂量CT筛查扫描方案。 |
| 英文摘要: |
| Objective To assess the program of low dose chest CT screening with iterative reconstruction technique (iDose4). Methods Totally 120 subjects who underwent chest CT screening were divided into 3 groups according to body mass index (BMI): Group A (BMI≤22), group B (22vol) and dose length product (DLP) were recorded, while effective dose (ED) was estimated. The imaging quality was assessed by 2 radiologists. Results The images of each group were acceptable. The average CTDIvol for group A, B and C was (0.69±0.08)mGy, (1.09±0.17)mGy and (1.95±0.43)mGy, respectively, and the average ED was (0.33±0.05)mSv, (0.50±0.11) mSv and (0.87±0.23) mSv, respectively. Conclusion Application of iDose4 iterative reconstruction technique based on BMI can achieve satisfactory scanning program of chest low-dose screening. |
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