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1. 发明授权

US4445035A Emission computed tomography having radial position control of radiation detector 失效
标题翻译：辐射计算机断层扫描具有辐射探测器的径向位置控制
公开(公告)号：US4445035A
公开(公告)日：1984-04-24
申请号：US265243
申请日：1981-05-19
申请人： Akihide Ueyama
发明人： Akihide Ueyama
IPC分类号： A61B6/03 , A61B5/107 , G01T1/161 , G01T1/164 , G01T1/29 , G01T1/20
CPC分类号： G01T1/2985 , A61B5/1077 , A61B6/037
摘要： An emission computed tomography wherein a radiation detector is rotated around a subject to detect radiation emitted from radioisotopes distributed in the subject and a distributing image of the radioisotopes in any section of the subject is reconstructed on the basis of the detected data, the emission computed tomography including detector-driving apparatus for moving the detector to or from the subject as the detector is rotated around the subject, at least one distance-measuring device, such as an ultrasonic transducer, for measuring the distance between the detector and subject at every rotative position of the detector, and apparatus responsive to the measured distance for controlling the detector-driving apparatus in order to adjust the distance between the detector and subject within a predetermined range.
摘要翻译：发射计算机断层摄影，其中辐射检测器围绕对象旋转以检测从分布在对象中的放射性同位素发射的辐射以及在对象的任何部分中的放射性同位素的分布图像，基于检测到的数据，发射计算机断层摄影包括检测器驱动装置，用于当检测器围绕对象旋转时将检测器移动到被检体或从被检体旋转;至少一个距离测量装置，例如超声波换能器，用于在每个旋转位置处测量检测器和被检体之间的距离以及响应于测量的距离的装置，用于控制检测器驱动装置，以便在预定范围内调整检测器和被摄体之间的距离。

2. 发明授权

US5204629A Automatic aligning mechanism for nuclear magnetic resonance imaging apparatus 失效
标题翻译：核磁共振成像装置自动对准机构
公开(公告)号：US5204629A
公开(公告)日：1993-04-20
申请号：US620777
申请日：1990-12-03
申请人： Akihide Ueyama
发明人： Akihide Ueyama
IPC分类号： A61B5/055 , A61B6/08 , G01R33/28 , G01R33/30
CPC分类号： A61B6/08 , A61B5/0555 , G01R33/543
摘要： An automatic aligning mechanism is used for a nuclear magnetic resonance imaging apparatus, the imaging apparatus producing an image of a section of an inspected portion of a subject at a predetermined inspecting position in a central space of a main coil supported by a gantry, by means of the principles of nuclear magnetic resonance. The mechanism includes a base having a table top, on which the subject is placed and which is movable to move the subject into and out from on opening of the gantry corresponding to the inner space of the main coil, a position measuring unit, having an indicating member which is movable on the top to indicate an inspected portion of the subject and measuring a relative position of the inspected portion to the top by the moving distance of the indicating member, and a detecting unit, which detects a distance between the subject's inspected portion and a predetermined inspecting position in the central space of the main coil on the basis of the measured result by the position measuring unit and moves the plate for the detected distance toward the gantry's opening.
摘要翻译：一种自动对准机构用于核磁共振成像设备，该成像设备在由台架支撑的主线圈的中心空间中的预定检查位置处产生被检测部分的一部分的图像，的核磁共振原理。该机构包括具有台面的底座，物体放置在该底座上，并且可移动物体以使其与对应于主线圈的内部空间的台架的开口移入和移出;位置测量单元，具有指示构件，其可在顶部移动以指示被检体的被检查部分，并且通过指示构件的移动距离测量被检查部分与顶部的相对位置;以及检测单元，其检测被检查者的距离基于位置测量单元的测量结果在主线圈的中心空间中的预定检查位置和预定的检测位置，将检测距离的板移动到台架的开口。

3. 发明授权

US4476389A Emission type computed tomography apparatus 失效
标题翻译：发射型计算机断层摄影装置
公开(公告)号：US4476389A
公开(公告)日：1984-10-09
申请号：US301437
申请日：1981-09-11
申请人： Akihide Ueyama , Nobuo Kumano , Hidetomo Takase
发明人： Akihide Ueyama , Nobuo Kumano , Hidetomo Takase
IPC分类号： A61B6/03 , G01T1/161 , G01T1/29 , G01T1/20
CPC分类号： A61B6/032 , A61B6/037 , G01T1/2985
摘要： An emission type computed tomography apparatus comprises a mechanism for rotating a detector along a circle centered at a human body to whom radioisotope is previously given, and a circuit for reconstructing a tomogram in accordance with an output signal from said detector. The rotating mechanism further has a member for slanting the detector with respect to a tangential line of the circle, a member for slanting said detector with respect to the body axis, and a member for changing the radius of the rotating circle of the detector.
摘要翻译：一种发射型计算机断层摄影装置，包括：用于使检测器沿着以预先给予放射性同位素的人体为中心的圆旋转的机构，以及根据来自所述检测器的输出信号重建断层图像的电路。旋转机构还具有用于使检测器相对于圆的切线倾斜的构件，用于相对于主体轴线倾斜所述检测器的构件，以及用于改变检测器的旋转圆的半径的构件。

4. 发明授权

US4767992A Magnetic resonance imaging system 失效
标题翻译：磁共振成像系统
公开(公告)号：US4767992A
公开(公告)日：1988-08-30
申请号：US101400
申请日：1987-09-28
申请人： Akihide Ueyama
发明人： Akihide Ueyama
IPC分类号： A61B5/055 , G01R33/46 , G01R33/48 , G01R33/54 , G01R33/20
CPC分类号： G01R33/4835 , G01R33/446
摘要： A magnetic resonance imaging system is made up of a static field generator, a gradient field generator, an excitation pulse generator, a receiver, a controller for controlling the static field generator, gradient field generator, excitation pulse generator, and receiver, and an image processor. The controller includes a multi-slice control section and an adjustment/control section. The multi-slice controller sequentially controls use excitation of a plurality of slices by a plurality of excitation pulses of different carrier frequencies in a common static field and a gradient field. Through these excitations, the magnetic resonance data for the plurality of slices is obtained with one excitation repetition period, and the multi-slice imaging can be performed by a predetermined number of repetitive excitations. The adjustment/control section operates the multi-slice control section for the adjustment of the respective adjustment-required parameters of the MRI system, and causes it to execute the adjustments of adjustment-required parameters of the MRI system, which are different with those slices subjected to the imaging, in connection with the multi-slice imaging.
摘要翻译：磁共振成像系统由静电场发生器，梯度场发生器，激励脉冲发生器，接收器，用于控制静态场发生器的控制器，梯度场发生器，激励脉冲发生器和接收器以及图像组成处理器。控制器包括多片控制部分和调节/控制部分。多片控制器通过在公共静态场和梯度场中的不同载波频率的多个激励脉冲顺序地控制多个片的使用激励。通过这些激励，利用一个激励重复周期获得多个片的磁共振数据，并且可以通过预定数量的重复激励来执行多片成像。调整/控制部分操作多片控制部分，用于调整MRI系统的各个调整要求的参数，并使其执行与这些切片不同的MRI系统的调整要求参数的调整进行成像，结合多切片成像。

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