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    • 81. 发明申请
    • WIRE MESH COLLIMATOR
    • 电线网络
    • WO2011081511A1
    • 2011-07-07
    • PCT/MY2009/000223
    • 2009-12-31
    • UNIVERSITI PUTRA MALAYSIASARIPAN, M. IqbalPETROU, Maria
    • SARIPAN, M. IqbalPETROU, Maria
    • A61B6/00A61B6/08
    • G21K1/025A61B6/037A61B6/4258
    • A wire mesh collimator (10) is proposed as an alternative to the multihole collimator of a gamma camera. The wire mesh collimator (10) comprises round wires that are used to form septa (12) of a wire mesh. Each septum (12) has a predetermined diameter and spaced apart at a distance same as the diameter of the septa. The first embodiment of the wire mesh collimator (10) has a uniform diameter of septa and distance between septa. For a collimator depth of 4 cm, the septa have a diameter of 0.02 cm and the distance between each septum is 0.02 cm. The second embodiment of the wire mesh collimator (10) has walls on the gamma ray entry point and exit point. Walls are created by stacking at least three septa together. For a collimator depth of 4 cm, seven septa having a diameter of 0.02 cm are stacked together to form an entry wall. Seven septa having a diameter of 0.02 cm are also stacked together to form an exit wall.
    • 提出了一种丝网准直器(10)作为伽马照相机的多孔准直仪的替代品。 丝网准直器(10)包括用于形成丝网的隔片(12)的圆形线。 每个隔膜(12)具有预定的直径并以与隔膜的直径相同的距离间隔开。 丝网准直器(10)的第一实施例具有均匀的隔膜直径和隔片之间的距离。 对于4厘米的准直器深度,隔片的直径为0.02厘米,每个隔膜之间的距离为0.02厘米。 丝网准直器(10)的第二实施例在伽马射线入口点和出口点具有壁。 墙壁是通过将至少三个隔垫堆叠在一起而创建的。 对于4cm的准直器深度,将直径为0.02cm的七个隔片堆叠在一起形成入口壁。 直径为0.02cm的七个隔片也堆叠在一起形成出口壁。