会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明申请
    • Method for enhancing the accuracy of PET/CT images
    • 提高PET / CT图像精度的方法
    • US20070167716A1
    • 2007-07-19
    • US11595389
    • 2006-11-10
    • Paul KinahanAdam AlessioThomas LewellenHubert Vesselle
    • Paul KinahanAdam AlessioThomas LewellenHubert Vesselle
    • A61B5/05
    • A61B6/405A61B6/032A61B6/4014A61B6/482
    • A method is disclosed for obtaining linear attenuation coefficients for interpreting a PET scan of a region. The method is suitable for use when high molecular weight materials are present in the region, such as contrast agents or metal objects. The method includes obtaining first and second x-ray CT data sets of the region of interest at two different energies or voltage potentials and differencing corresponding CT numbers. The difference values are used to distinguish portions of the region that are bone from portions of the region that are contrast agent or other high molecular weight material. The obtained CT data set is then used to obtain an attenuation coefficient map of the region at the PET energy of 511 keV, for example, using a linear scaling factor suited to the particular identified material. Difference values at or near zero may be used to identify soft tissue portions of the region.
    • 公开了一种用于获得用于解释区域的PET扫描的线性衰减系数的方法。 当该区域中存在高分子量材料时,如造影剂或金属物体,该方法适合使用。 该方法包括以两个不同的能量或电压电位获得感兴趣区域的第一和第二X射线CT数据集,并差分相应的CT数。 差值用于区分作为造影剂或其它高分子量材料的区域的部分作为骨的部分。 然后使用所获得的CT数据集来获得例如在511keV的PET能量下的区域的衰减系数图,例如使用适合于特定识别材料的线性缩放因子。 在零附近或接近零的差值可用于识别该区域的软组织部分。