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1. 发明授权

US4404631A Method of and device for coding and decoding an image of an object by means of penetrating radiation 失效
标题翻译：通过穿透辐射对物体的图像进行编码和解码的方法和装置
公开(公告)号：US4404631A
公开(公告)日：1983-09-13
申请号：US233616
申请日：1981-01-21
申请人： Hermann Weiss , Klaus Pasedach
发明人： Hermann Weiss , Klaus Pasedach
IPC分类号： A61B6/02 , H04N5/32 , G06F15/336
CPC分类号： A61B6/025 , H04N5/32
摘要： A method of and a device for the coding and decoding of an object by means of point-shaped radiation sources. The point sources are subdivided in groups which successively irradiate the object. Two sources distributions can be derived from the groups of radiation sources (a negative radiation intensity is assigned to at least one group), the sum of the autocorrelation functions thereof having the value "0" outside the origin. The coded images generated by means of the various groups are recorded (and also their negatives). Combinations of a coded image and a negative are decoded via point holograms or lens matrices, thus forming a subimage. The sum of all subimages forms an object image which is free of artefacts.
摘要翻译： PCT No.PCT / NL80 / 00001 Sec。 371日期1981年1月21日 102（e）日期1981年1月21日PCT提交1980年1月10日PCT公布。公开号WO81 / 01952 日期1981年7月23日。一种通过点状辐射源对物体进行编码和解码的方法和装置。点源被分成依次照射物体的组。可以从辐射源组中得到两个源分布（负辐射强度被分配给至少一个组），其在原点之外具有值“0”的自相关函数之和。记录通过各种组生成的编码图像（以及它们的底片）。通过点全息图或透镜矩阵解码编码图像和负的组合，从而形成子图像。所有子图的总和形成一个没有人工制品的物体图像。

2. 发明授权

US4417353A Fan beam CT scanner with compensating detector motion 失效
标题翻译：风扇光束CT扫描仪，具有补偿检测器运动
公开(公告)号：US4417353A
公开(公告)日：1983-11-22
申请号：US756856
申请日：1977-01-05
申请人： Gunther Groh , Hermann Weiss , Wolfgang Wagner , Klaus Pasedach , Gunter Kowalski , Dietrich Meyer-Ebrecht
发明人： Gunther Groh , Hermann Weiss , Wolfgang Wagner , Klaus Pasedach , Gunter Kowalski , Dietrich Meyer-Ebrecht
IPC分类号： G01N23/04 , A61B6/03 , G03B41/16
CPC分类号： A61B6/032
摘要： In fan beam X-ray scanners operating with a large number of detectors, errors at and near the center of rotation are caused by the fact that the radiation absorption in said area is substantially always measured by the same detectors and that the sensitivity of all detectors is not exactly the same. The invention provides an improvement in that the measurement is carried out with a larger number of detectors than is necessary for the measurement of the scanning field and that the detectors pivot during the measurement. As a result, the absorption in the center of rotation is measured by different detectors so that, for a sufficient number of detectors the different sensitivities, errors are averaged and thus reduced or cancelled.
摘要翻译：在使用大量检测器操作的扇形束X射线扫描仪中，旋转中心处和附近的误差是由于所述区域中的辐射吸收基本上总是由相同的检测器测量的，并且所有检测器的灵敏度是不一样的本发明提供了一种改进，其中使用比测量扫描场所需的更大数量的检测器进行测量，并且检测器在测量期间枢转。结果，通过不同的检测器测量旋转中心的吸收，使得对于足够数量的检测器，不同的灵敏度，误差被平均化并因此减小或消除。

3. 发明授权

US4064393A Device for measuring radiation absorption in a section of a body 失效
标题翻译：用于测量身体部位辐射吸收的装置
公开(公告)号：US4064393A
公开(公告)日：1977-12-20
申请号：US661986
申请日：1976-02-27
申请人： Klaus Pasedach , Wolfgang Wagner
发明人： Klaus Pasedach , Wolfgang Wagner
IPC分类号： G01N23/04 , A61B6/03 , G01N23/08
CPC分类号： A61B6/032 , Y10S378/901
摘要： A device for examining a body section by means of x-radiation including a plurality of detectors arranged to intercept radiation passing through the body in straight lines or strips and a calculating circuit which interpolates, on the basis of absorption values measured, absorption values which can be expected along sets of mutually extending strips which cross each other at different angles. The absorption in the section of the body can then be calculated in known manner on the basis of these values.
摘要翻译：一种用于通过x辐射检查身体部分的装置，包括多个检测器，其布置成拦截以直线或条带穿过身体的辐射;以及计算电路，其基于测量的吸收值内插，其可以预期沿着彼此以不同角度交叉的相互延伸的条带组合。然后可以基于这些值以已知方式计算身体部分的吸收。

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