[1]王明芳,高晓.PET中散射的测量和校正[J].国际放射医学核医学杂志,2001,25(3):120-122141.
　WANG Ming-fang,GAO Xiao.The measurement and correction of the scatter in PET[J].International Journal of Radiation Medicine and Nuclear Medicine,2001,25(3):120-122141.
点击复制

PET中散射的测量和校正(/HTML)
分享到：

《国际放射医学核医学杂志》[ISSN:1673-4114/CN:12-1381/R]

卷:
25
期数:
2001年第3期
页码:
120-122141
栏目:
综述
出版日期:
1900-01-01

文章信息/Info

Title:
The measurement and correction of the scatter in PET
作者:
王明芳;  高晓
510515 广州, 广州第一军医大学南方医院PET中心
Author(s):
WANG Ming-fang;  GAO Xiao
Nanfang PET center, Nanfang Hospital, First Military Medical University, Guangzhou 510515, China
关键词:
PET; 散射; 散射份数; 测量; 校正
Keywords:
PET Scatter; scatter fraction; measurement; correction
分类号:
R817.4
摘要:
PET利用符合探测技术除探测两个同时发生的方向相反的511ke V的发射湮灭光子外,由于散射辐射的存在,同样也探测到与湮灭光子能量相似的散射光子,增加了信噪比和错误事件的计数率,结果产生赝像。因此,了解散射对PET测量的影响,掌握散射及散射份数的测量和散射的校正方法,是提高影像质量及精确测定放射性药物的生物学参数的基础。
Abstract:
The coincidence technique employed in positron emission tomography (PET) to detect the two simultaneously, emitted annihilation photons of 511 keV that travel at a 180?angle to each other. Because of the scattered radiation, the scattered photons were also detected by the coincidence technique in PET. PET images uncorrected for scatter give inaccurate image data and, in addition, the scatter contribution could give rise to signal to noise ratio (SN R) and could produce highly structured errors or artifacts in the images. So, to understand of the effects of the scatter on PET imaging, and to master the measured and corrected methods of the scatter will improve the quality of image and accurately measure the biological parameters of the radiophamaceutical in vivo.

参考文献/References:

[1] Muzic RF,Chen CH,Nelson AD.A method to correct for scatter,spillover and partial volume effects in re-gion of interest analysis in PET[J].IEEE Trans Med Imag,1998,17; 202-213.
[2] Li HH,Votaw JR.Optimization of PET activation studies based on the SN R measured in the 3-D Hoffman brain phantom[J].IEEE Trans Med Imag,1998,17:596-605.
[3] Shao L,Karp JS.Cross-plane scattering correction-point source deconvolation in PET[J].IEEE Ttans Med Imag,1991,10:234-239.
[4] Paans AM J,Rosenqvist G,Holte S,et al.Scatter frac-tion:measurement and correction[J].Eur J Nucl Med,1989,15:727-731.
[5] Derenzo SE,Huesman RH,Cahoon JL,et al.A positron tomograph with 600 BGO crystals and 2.6mm resolution[J].IEEE Ttans Nucl Sci,1988,35:659-664.
[6] Spinks TJ,Jones T,Gilardi MC,et al.Physical perfor-mance of the latest generation of commercial positron scanner[J].IEEE Trans Nucl Sci,1988,35:721-725.
[7] Chen CH,Muzic RF,Nelson AD,et al.A nonlinear sparially variant object-dependent system model for pre-diction of partial volume effects and scatter in PET[J].IEEE Trans Med Imag,1998,17:214-227.

相似文献/References:

[1]郑妙,王容.复杂性局部发作癫痫灶的影像学定位[J].国际放射医学核医学杂志,1998,22(1):14.
[2]王荣福,潘中允.核医学神经受体显像[J].国际放射医学核医学杂志,1998,22(2):52.
[3]朱汇庆,林祥通.对核素显像估价心肌存活的再认识[J].国际放射医学核医学杂志,1998,22(5):193.
[4]杜倩倩,陈绍亮.18F-FDG肿瘤显像操作指南[J].国际放射医学核医学杂志,1998,22(6):258.
[5]曹国祥,谭天秩.多巴胺受体显像剂的研究概况[J].国际放射医学核医学杂志,1999,23(2):65.
[6]李志杰,裴著果.脑梗塞缺血半暗区的核医学显像[J].国际放射医学核医学杂志,1999,23(4):145.
[7]孙文善,朱承谟.脑功能显像在药物滥用研究中的应用价值[J].国际放射医学核医学杂志,1999,23(4):149.
[8]张祥松,唐安戊.PET显像在肿瘤放射治疗中的应用[J].国际放射医学核医学杂志,1999,23(4):159.
[9]唐刚华,黄祖汉.PET药物及其研究现状与进展[J].国际放射医学核医学杂志,1999,23(5):193.
[10]钟建国,夏振民,王思理.美国PET放射性药物的生产和质量控制管理[J].国际放射医学核医学杂志,1999,23(5):198.

备注/Memo

备注/Memo:
收稿日期:2000/4/15。
作者简介:王明芳(1963-),男,甘肃天水人,广州第一军医大学南方医院PET中心主治医师,讲师,主要从事正电子成像、放射性药物合成。;高晓(1970-),男,湖南南县人,广州第一军医大学南方医院PET中心主管技师,主要从事正电子成像研究。
更新日期/Last Update: 1900-01-01