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公开(公告)号：US4546384A
公开(公告)日：1985-10-08
申请号：US355978
申请日：1982-03-08
申请人： Gunter Kowalski
发明人： Gunter Kowalski
CPC分类号： G01B15/045 , H04N7/18
摘要： The invention relates to a method for the testing of a workpiece which is moved past a stationary camera in order to record a sequence of images, the images being subsequently superposed so that the movement of the workpiece is compensated for Low-noise images of the workpiece are thus obtained.
摘要翻译： 本发明涉及一种用于测试工件的方法，该工件被移动通过固定照相机以便记录一系列图像，该图像随后被叠加，使得工件的移动被补偿工件的低噪声图像 因此得到。
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2.发明授权
公开(公告)号：US4204124A
公开(公告)日：1980-05-20
申请号：US897448
申请日：1978-04-18
申请人： Gunter Kowalski
发明人： Gunter Kowalski
CPC分类号： A61B6/032 , A61B6/4014 , A61B6/4085
摘要： A device for reconstructing the absorption distribution in a three-dimensional body. The body to be examined is imaged from two groups of radiation source positions. Each group of radiation source positions is situated on an arc of a circle around the axis of rotation, and the acrs of a circle determine the dimensions of the region in which the absorption distribution is reconstructed. The detector device is disposed between the two arcs of a circle.
摘要翻译： 一种用于重建三维体内吸收分布的装置。 待检查的身体从两组辐射源位置成像。 每组辐射源位置位于围绕旋转轴的圆弧上，圆的acrs决定了重构吸收分布的区域的尺寸。 检测器装置设置在圆的两个弧之间。
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公开(公告)号：US4075484A
公开(公告)日：1978-02-21
申请号：US705051
申请日：1976-07-14
CPC分类号： H05G1/26 , A61B6/032 , G01T1/1644 , Y10S378/901
摘要： A device for correcting measuring values of a group of radiation detectors for measuring the intensity or distribution of radiation, comprising an additional radiation source for direct irradiation of the detectors. The radiation of the said additional radiation source can be switched on each time when the radiation to be measured is not incident on the radiation detectors. The device furthermore comprises a calculating device which forms for each radiation detector the quotient of the measuring value (M1(x)) and the reference measuring value (M2(x)) of the radiaton detectors when exposed to the radiation of the additional radiation source.
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4.发明授权Method of and apparatus for generating improved reconstruction images in computerized tomography equipment 失效用于在计算机断层摄影设备中产生改进的重建图像的方法和装置
公开(公告)号：US4314337A
公开(公告)日：1982-02-02
申请号：US27552
申请日：1979-04-06
申请人： Gunter Kowalski
发明人： Gunter Kowalski
CPC分类号： A61B6/583 , G06T11/005 , Y10S378/901
摘要： The method relates to an X-ray apparatus, which by the rotary scanning with the aid of a fan-shaped radiation beam provides measuring data about the radiation attenuation in the layer of a body, from which subsequently the absorption distribution of the layer being examined is calculated. In such an apparatus it is important that the center of rotation is accurately known. If this center is not exactly known, this leads to blurring in the reconstructed image. If scanning is not performed over a full revolution, this moreover gives rise to streaking artefacts. The method proposed automatically yields the center of rotation from the measuring data, so that during the subsequent reconstruction allowance can be made for the center of rotation.
摘要翻译： 该方法涉及一种X射线装置，其通过借助于扇形辐射束的旋转扫描提供关于身体层中的辐射衰减的测量数据，随后将检查被检测层的吸收分布 被计算。 在这种装置中，重要的是旋转中心是精确的。 如果这个中心不是完全知道的，这会导致重建图像的模糊。 如果扫描不是在一整圈进行扫描，这还会产生条纹伪像。 所提出的方法自动地从测量数据产生旋转中心，使得在随后的重建中可以对旋转中心进行补偿。
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5.发明授权Device for determining the radiation absorption distribution in a three-dimensional examination zone 失效用于确定三维检查区域中的辐射吸收分布的装置
公开(公告)号：US4309615A
公开(公告)日：1982-01-05
申请号：US158189
申请日：1980-06-11
申请人： Gunter Kowalski
发明人： Gunter Kowalski
CPC分类号： A61B6/032 , A61B6/4085 , G21K1/025 , A61B6/4021
摘要： A device for determining the radiation absorption distribution in a three-dimensional examination zone which is irradiated from different positions which are situated in one plane and in which radiation sources are present. The device comprises two detector arrays consisting of separate, adjacently arranged detectors, which are situated at a distance from and parallel to each other in a first plane and in a second plane. The device further comprises radiation sources which are situated between the two extreme planes and which are arranged to be rotate around an axis of rotation which extends transversely of said planes. The radiation sources are line-shaped and are arranged parallel to the axis of rotation and diametrically with respect to the axis of rotation opposite a detector array.
摘要翻译： 一种用于确定在位于一个平面中并且存在辐射源的不同位置的三维检查区域中的辐射吸收分布的装置。 该装置包括两个检测器阵列，该检测器阵列由分开的，相邻布置的检测器组成，它们在第一平面和第二平面中彼此距离并且彼此平行。 该装置还包括辐射源，辐射源位于两个极端平面之间，并且被布置为围绕横向于所述平面延伸的旋转轴线旋转。 辐射源是线形的，并且平行于旋转轴线并且相对于与检测器阵列相对的旋转轴线径向地布置。
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公开(公告)号：US4160167A
公开(公告)日：1979-07-03
申请号：US796968
申请日：1977-05-16
申请人： Hermann Weiss , Gunter Kowalski
发明人： Hermann Weiss , Gunter Kowalski
CPC分类号： A61B6/4225 , A61B6/032
摘要： In third generation computer tomography apparatus, wherein radiation behind the object is measured by means of a large number of detection elements, a detection device comprises a number of detection elements which is larger than necessary for the measurement of the fan-shaped radiation beam, per se, in a direction parallel to the axis of rotation. Means are included for displacing the detection device in the direction of the axis of rotation. Detector element unbalance effects are thus averaged.
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7.发明授权Device for producing two- and/or three-dimensional images of three dimensional objects 失效用于生成三维物体的二维和/或三维图像的装置
公开(公告)号：US4145614A
公开(公告)日：1979-03-20
申请号：US839619
申请日：1977-10-05
申请人： Gunter Kowalski
发明人： Gunter Kowalski
CPC分类号： A61B6/032 , A61B6/4085
摘要： A device for producing two- and/or three-dimensional images of three-dimensional objects, comprises at least two radiation sources, a detector arrangement, a computer, a processor and a display device, in which a number of radiation sources are arranged on a straight line, the detector device consists of a plurality of detector elements arranged in a plane parallel to the straight line, and means are present to process the signals which can be derived from the detector elements and to supply them to the computer.
摘要翻译： 用于产生三维物体的二维和/或三维图像的装置包括至少两个辐射源，检测器装置，计算机，处理器和显示装置，其中多个辐射源被布置在 检测器装置由布置在平行于直线的平面中的多个检测器元件组成，并且存在用于处理可从检测器元件导出并将其提供给计算机的信号的装置。
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公开(公告)号：US4075490A
公开(公告)日：1978-02-21
申请号：US675175
申请日：1976-04-08
申请人： Gunter Kowalski
发明人： Gunter Kowalski
CPC分类号： A61B6/032 , Y10S378/901
摘要： A device for measuring the absorption of radiation in a layer of a body, utilizing a radiator emitting a fanned radiation beam which passes through the body and which is measured by a number of adjacently arranged detectors. The radiator/detector system is rotated with respect to the body during the measurement. Integral measuring values of mutually intersecting sets of parallel strips are used for calculating the absorption. To this end, the device comprises means for sampling signals supplied by the detectors at different instants and/or means for effecting the sampling after different signal delay times.
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公开(公告)号：US4034223A
公开(公告)日：1977-07-05
申请号：US653111
申请日：1976-01-28
申请人： Gunter Kowalski
发明人： Gunter Kowalski
CPC分类号： B27D3/04 , A61B6/032 , Y10S378/901
摘要： In computerized tomographic scanning systems it is desirable to reduce the scanning time required. Therefore, it is desirable that the radiation source/radiation detector system not be stopped and subsequently accelerated again for each absorption measurement. The present system continuously rotates and the source is continuously turned on, the output signal of each radiation detector being applied via a low-pass filter to a sample-and-hold circuit having a sampling frequency which is about twice as high as the limit frequency of the low-pass filter. Better accuracy is obtained than with known scanners having discontinuous movement or a flashing radiation source.
摘要翻译： 在计算机断层扫描系统中，期望减少所需的扫描时间。 因此，期望辐射源/辐射检测器系统不被停止，并且随后再次加速每次吸收测量。 本系统连续旋转并且源连续接通，每个辐射检测器的输出信号通过低通滤波器被施加到采样频率大约是极限频率的两倍的采样和保持电路 的低通滤波器。 获得比具有不连续运动的已知扫描器或闪光辐射源更好的精度。
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公开(公告)号：US4499540A
公开(公告)日：1985-02-12
申请号：US362019
申请日：1982-03-25
申请人： Gunter Kowalski
发明人： Gunter Kowalski
CPC分类号： G01N23/04
摘要： The invention relates to a device for testing a body which comprises periodic structures. The device includes an image forming device for determining measurement signals representing the periodic structures, and a further electronic device. This electronic device forms the frequency spectrum from neighboring measurement values in the direction of the periodic body structures, suppresses the fundamental and higher harmonics (G,B.sub.1,B.sub.3) of the periodic structures in the relevant spectrum, and retransforms the spectrums thus modified for application to an image evaluation device.
摘要翻译： 本发明涉及一种用于测试包括周期性结构的身体的装置。 该装置包括用于确定表示周期性结构的测量信号的图像形成装置和另一电子装置。 该电子装置在周期性体结构的方向上形成来自相邻测量值的频谱，抑制相关频谱中的周期结构的基波和高次谐波（G，B1，B3），并重新形成如此修改的频谱 到图像评估装置。
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