國家衛生研究院 NHRI:Item 3990099045/4991
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 12145/12927 (94%)
造访人次 : 916977      在线人数 : 1534
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 查询小技巧：
  • 您可在西文检索词汇前后加上"双引号"，以获取较精准的检索结果
  • 若欲以作者姓名搜寻，建议至进阶搜寻限定作者字段，可获得较完整数据
    •  进阶搜寻
    主页 ‧ 登入 ‧ 上传 ‧ 说明 ‧ 关于NHRI ‧ 管理 到手机版


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.nhri.org.tw/handle/3990099045/4991


    题名: An additive poisson data modeling of attenuation map reconstruction from post-injection positron emission tomography transmission scan
    作者: Chang, MY;Hsu, CH;Lin, MC;Hsiao, IT
    贡献者: Division of Medical Engineering Research
    摘要: We present an additive Poisson data modeling of attenuation map reconstruction from post-injection positron emission tomography transmission scan. The transmission scan data are modeled as a collection of independent Poisson observations which consist of true transmission, cross-contamination emission and random coincidences. The mean values of cross-contamination emission and random data are estimated by using Luk's approximation and Zaers' method, respectively. The unknown attenuation map is also modeled using a Gibbs image prior. Under the paradigm of Bayesian statistics, a pre-conditioned conjugate gradient algorithm is then used to compute a maximum a posteriori estimate of the attenuation map by maximizing over the posterior density. Evaluations are conducted on clinical data collected from a CTI EXACT HR+ scanner. Experimental results have indicated that the reconstructed results of attenuation map by the proposed reconstruction algorithm match well with theoretical values of soft tissue, bone and lung under 511 keV photons.
    日期: 2010-06
    關聯: Biomedical Engineering: Applications, Basis and Communications. 2010 Jun;22(3):177-184.
    Link to: http://dx.doi.org/10.4015/s1016237210001918
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000278953300002
    Cited Times(Scopus): https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=77953862195
    显示于类别:[林名釗] 期刊論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    SCP77953862195.pdf703KbAdobe PDF618检视/开启


    在NHRI中所有的数据项都受到原著作权保护.

    TAIR相关文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈