| 影响PET/CT图像质量技术因素的探讨 |
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| 引用本文： | 钱根年,陈自谦,赵春雷,倪萍. 影响PET/CT图像质量技术因素的探讨[J]. 医疗设备信息, 2011, 0(2): 12-14 |
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| 作者姓名： | 钱根年 陈自谦 赵春雷 倪萍 |
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| 作者单位： | 南京军区福州总医院医学影像科;南京军区福州总医院医学工程科; |
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| 摘 要： | 目的对受检者体内18F-脱氧葡萄糖使用正电子发射体层摄影术/计算机体层摄影术（PET/CT）进行扫描,评价技术因素与图像质量的相关性,充分理解获得高质量PET/CT图像的必要条件,指导临床工作。方法采用GE公司Discovery LS16型PET/CT一体扫描仪对患者进行2D数据采集,对原始数据进行图像重建,使用CT对PET图像进行衰减校正。随机选取2005～2009年期间受检患者900例进行回顾性分析。结果伪影分为自身因素和设备技术因素,自身因素所致伪影中以运动伪影和高密度物质伪影最常见;设备技术因素伪影以截断伪影、放射性污染及注射点外漏较多见。不常见的生理性摄取包括乳腺摄取、子宫内膜摄取和脂肪摄取。结论受检者体内足够的放射性计数以及规范化操作是获得高质量PET/CT图像的前提和保证,且相辅相成。
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| 关 键 词： | PET/CT 体层摄影术 脱氧葡萄糖 质量控制 回旋加速器 |
Exploration of Technology Element of PET/CT Imaging Quality |
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| QIAN Gen-niana,CHEN Zi-qiana,ZHAO Chun-leia,NI Pingb a. Exploration of Technology Element of PET/CT Imaging Quality[J]. Information of Medical Equipment, 2011, 0(2): 12-14 |
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| Authors: | QIAN Gen-niana CHEN Zi-qiana ZHAO Chun-leia NI Pingb a |
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| Affiliation: | QIAN Gen-niana,CHEN Zi-qiana,ZHAO Chun-leia,NI Pingb a.Center of Medical Imaging,b.Department of Biomedical Engineering,Fuzhou General Hospital of Nanjing Area Command,Fuzhou Fujian 350025,China |
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| Abstract: | Objective To study the relationship of the factors such as acquisition technique with the quantity of the PET/CT images.Methods 900 patients were examined by GE Discovery LS16 PET/CT scanner,and PET reconstruction was used for 2D data.The images were attenuation corrected by CT image.Results Artifacts could be classified into natural and technological causes.In natural causes,movement and high-density matters artifacts were frequently found,whereas in technological cause,the trucation,radioactive leakage an... |
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| Keywords: | PET/CT tomography deoxyglucose quality control |
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