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1. 发明授权

US4780823A Multiple pixel area-weighted acquisition system for scintillation cameras 失效
标题翻译：用于闪烁照相机的多像素区域加权采集系统
公开(公告)号：US4780823A
公开(公告)日：1988-10-25
申请号：US838509
申请日：1986-03-11
申请人： Everett W. Stoub , Raymond P. DeVito , Anthony Del Medico
发明人： Everett W. Stoub , Raymond P. DeVito , Anthony Del Medico
IPC分类号： G01T1/164 , G01T1/20
CPC分类号： G01T1/1647 , G01T1/1642
摘要： Upon the detection of a scintillation event at an event pixel, a plurality of associated pixels are identified. Weights are assigned to the event pixel and to all of the associated pixels in such a manner as to attribute the event over an area in a statistically accurate manner. A current sum of all weights which have been previously assigned to each pixel is stored. Unblank signals are generated, based upon this current sum, and the current sum is updated to account for the number of unblank signals so generated.
摘要翻译：当在事件像素处检测到闪烁事件时，识别出多个相关联的像素。权重被分配给事件像素和所有相关联的像素，以便以统计学准确的方式将事件归属于区域。存储先前分配给每个像素的所有权重的当前和。基于该当前和产生Unblank信号，并且更新当前和以考虑如此生成的非空白信号的数量。

2. 发明授权

US4575810A Method and circuit for processing pulses by applying the technique of weighted acquisition 失效
标题翻译：应用加权采集技术处理脉冲的方法和电路
公开(公告)号：US4575810A
公开(公告)日：1986-03-11
申请号：US474409
申请日：1983-03-11
申请人： Everett W. Stoub
发明人： Everett W. Stoub
IPC分类号： A61B6/00 , G01T1/164 , G01T1/17 , G06F15/20 , G01T1/20
CPC分类号： G01T1/1642 , G01T1/1647 , A61B6/4258
摘要： A method and a circuit are provided for processing pulses, caused by a radioactive source and produced by an imaging radiation detector, by applying the technique of weighted acquisition for forming an image. An image weight function is formed corresponding to the source radiation, said function being dependent on the energy of said pulses in consideration of both the energy dependent signal-to-noise ratios of said pulses and the energy dependent modulation transfer functions of said pulses. Thereby a weighting pulse is obtained for each of said pulses, the particular value of said weighting pulse determined by the observed energy of said pulse. Said weighting pulses are then accumulated as said image.
摘要翻译：提供一种方法和电路，用于通过应用用于形成图像的加权获取技术来处理由放射源引起并由成像辐射检测器产生的脉冲。考虑到所述脉冲的能量相关信噪比和所述脉冲的与能量相关的调制传递函数两者，对应于源辐射形成图像加权函数，所述函数取决于所述脉冲的能量。由此，针对每个所述脉冲获得加权脉冲，所述加权脉冲的特定值由所述脉冲的观测能量确定。所述加权脉冲然后被累积为所述图像。

3. 发明授权

US5650625A Two-dimensional radiation emitter for attenuation correction in nuclear medicine studies 失效
标题翻译：二维辐射发射器用于核医学研究中的衰减校正
公开(公告)号：US5650625A
公开(公告)日：1997-07-22
申请号：US559748
申请日：1995-11-15
申请人： Everett W. Stoub
发明人： Everett W. Stoub
IPC分类号： A61B6/03 , A61N5/10 , G01T1/164 , G21G4/06 , G21K5/10 , G21K5/00
CPC分类号： A61B6/032 , A61B6/4085 , G01T1/1615 , G01T1/1648 , G21G4/06 , G21K5/10 , A61B6/037 , A61N5/10
摘要： A two-dimensional radiation emitter has a plurality of line sources, advantageously of Gd-153. The line sources are removeably retained in the emitter, and form an array. The most active line sources are located in the center region of the array, and the activity of the sources progressively diminishes from the center of the array to the ends of the array (where the least active line sources are located). As the line sources undergo radioactive decay, they are moved towards the ends.
摘要翻译：二维辐射发射器具有多个线源，有利地是Gd-153。线源可移除地保持在发射器中，并形成阵列。最活跃的线源位于阵列的中心区域，并且源的活动从阵列的中心逐渐减小到阵列的末端（最不活跃的线源所在的位置）。当线源经历放射性衰变时，它们朝向端部移动。

4. 发明授权

US4599690A Method and circuit for correcting count rate losses of radiation events 失效
标题翻译：用于校正辐射事件计数率损失的方法和电路
公开(公告)号：US4599690A
公开(公告)日：1986-07-08
申请号：US549866
申请日：1983-11-09
申请人： Everett W. Stoub
发明人： Everett W. Stoub
IPC分类号： G01T1/164 , G01T1/17 , G01T1/20
CPC分类号： G01T1/171 , Y10S128/922
摘要： Radiation events of a radiation detector which are subject to deadtime losses during the acquisition time are detected as event triggers. For each detected radiation event a deadtime signal is provided. The acquisition time is subdivided into a succession of evaluation time intervals and the fractional amount of deadtime is measured within each evaluation time interval to obtain a measure for count rate losses. From the fractional amount of deadtime a replication probability is evaluated and dependent thereon all radiation events detected between the end of one evaluation time and the end of a following one are evaluated to generate (a) one pulse for each detected radiation event; and (b) a sequence of a number of pulses for randomly selected events.
摘要翻译：在采集时间内受到死时间损失的辐射检测器的辐射事件被检测为事件触发。对于每个检测到的辐射事件，提供死区时间信号。将采集时间细分为连续的评估时间间隔，并且在每个评估时间间隔内测量死时间的分数，以获得计数率损失的度量。从死亡时间的数量来看，复制概率被评估并依赖于其中在一个评估时间结束和后续结束之间检测到的所有辐射事件被评估以产生（a）每个检测到的辐射事件的一个脉冲; 和（b）用于随机选择的事件的多个脉冲序列。

5. 发明授权

US5717213A Collimator and scintillation camera system for use in carrying out attenuation-corrected spect studies of small body organs such as the heart and brain 失效
标题翻译：准直器和闪烁照相机系统，用于对小心脏器官如心脏和脑部进行衰减校正的观察研究
公开(公告)号：US5717213A
公开(公告)日：1998-02-10
申请号：US493875
申请日：1995-06-23
申请人： Everett W. Stoub , Reinout F. Vogt
发明人： Everett W. Stoub , Reinout F. Vogt
IPC分类号： G01T1/161 , G01T1/164 , G01T1/29 , G01T7/00 , G01T1/166 , G21K1/02
CPC分类号： G01T1/1615 , A61B6/037 , G01T1/1648 , G01T1/2985
摘要： In the axial direction, a collimator is a fan-beam collimator. In the transverse direction, the collimator has a set of central magnifying fan beams located between two sets of peripheral magnifying fan beams.
摘要翻译：在轴向上，准直器是扇形光束准直仪。在横向上，准直器具有位于两组外围放大扇形光束之间的一组中心放大扇形光束。

6. 发明授权

US5576545A Line source for attenuation correction in nuclear medicine studies and apparatus and methods for using the source 失效
标题翻译：核医学研究中用于衰减校正的线源，以及使用源的装置和方法
公开(公告)号：US5576545A
公开(公告)日：1996-11-19
申请号：US491422
申请日：1995-06-16
申请人： Everett W. Stoub , William R. George
发明人： Everett W. Stoub , William R. George
IPC分类号： A61B6/03 , A61N5/10 , G01T1/164 , G21G4/06 , G21K5/10 , G01T1/161 , G01T1/166
CPC分类号： A61B6/032 , A61B6/037 , A61B6/4085 , G01T1/1615 , G01T1/1648 , G21G4/06 , G21K5/10 , A61N5/10
摘要： In a system which corrects for attenuation artifacts in a SPECT study, a line source is parallel to the axis of rotation of the scintillation camera detector(s) and is scanned in a plane which is parallel to the detector. Advantageously, the line source is initially scanned at high speed across the detector to acquire preliminary transmission CT data and is subsequently scanned across the detector at lower speed to acquire additional transmission CT data. During rescanning, the shuttering of the line source, and/or the speed of the line source, is varied. This acquires transmission CT data which is more reliable and from which the attenuation of the patient may be more accurately calculated.
摘要翻译：在校正SPECT研究中的衰减伪像的系统中，线源平行于闪烁照相机检测器的旋转轴并且在与检测器平行的平面中扫描。有利地，线源最初以高速扫描检测器以获得初始传输CT数据，并且随后以更低的速度跨越检测器进行扫描，以获得附加的传输CT数据。在重新扫描期间，线源的快门和/或线源的速度是变化的。这获得更可靠的传输CT数据，并且可以更精确地计算患者的衰减。

7. 发明授权

US4618775A Radiation detector circuit with real time photon counting 失效
标题翻译：具有实时光子计数的辐射检测电路
公开(公告)号：US4618775A
公开(公告)日：1986-10-21
申请号：US593020
申请日：1984-03-26
申请人： Dennis E. Persyk , Everett W. Stoub
发明人： Dennis E. Persyk , Everett W. Stoub
IPC分类号： G01T1/17 , G01T1/208
CPC分类号： G01T1/208 , G01T1/17
摘要： A radiation detector circuit, which comprises a radiation detector containing a scintillation crystal and a photomultiplier tube for real time photon measurement having a pulse output, and which also includes a plurality of pulse counters each having a pulse input and a count signal output. Between the pulse output of the photomultiplier tube and the pulse inputs of the pulse counters a time multiplexer is provided for connecting each pulse input of each counter in succeeding time periods with the pulse output of the photomultiplier tube. Furthermore, an evaluation circuit is connected with the count signal outputs of the counters for evaluating each count signal of each counter measured during each of said succeeding time periods in the sense of error estimates and trend analysis.
摘要翻译：一种辐射检测器电路，其包括具有闪烁晶体的辐射检测器和用于具有脉冲输出的实时光子测量的光电倍增管，并且还包括多个具有脉冲输入和计数信号输出的脉冲计数器。在光电倍增管的脉冲输出与脉冲计数器的脉冲输入之间，提供时间复用器，用于将后续时间段中的每个计数器的每个脉冲输入与光电倍增管的脉冲输出相连接。此外，在误差估计和趋势分析的意义上，评估电路与用于评估在每个所述后续时间段期间测量的每个计数器的每个计数信号的计数器的计数信号输出相连接。

8. 发明授权

US4663187A Scintillation crystal and method of making it 失效
标题翻译：闪烁晶体及其制作方法
公开(公告)号：US4663187A
公开(公告)日：1987-05-05
申请号：US667304
申请日：1984-11-01
申请人： Dennis E. Persyk , Everett W. Stoub
发明人： Dennis E. Persyk , Everett W. Stoub
IPC分类号： G01T1/202 , C01B9/00 , B05B5/00 , B05D5/06 , B05D5/12
CPC分类号： G01T1/202
摘要： A thick layer of CsI(Na) is heated to or slightly below its melting point. The CsI(Na) is held at that temperature for 7 to 10 hours and is cooled to room temperature, preferably in two steps. The resulting scintillation crystal is translucent or transparent.
摘要翻译：将CsI（Na）的厚层加热至或略低于其熔点。将CsI（Na）在该温度下保持7至10小时，并冷却至室温，优选两步。所得的闪烁晶体是半透明或透明的。

9. 发明授权

US4656359A Scintillation crystal for a radiation detector 失效
标题翻译：用于辐射探测器的闪烁晶体
公开(公告)号：US4656359A
公开(公告)日：1987-04-07
申请号：US838879
申请日：1986-03-10
申请人： Dennis E. Persyk , Everett W. Stoub
发明人： Dennis E. Persyk , Everett W. Stoub
IPC分类号： G01T1/20 , G01T1/202 , G01J1/58 , G01N21/64 , G01T1/00
CPC分类号： G01T1/202 , G01T1/2002
摘要： A scintillation crystal is provided for a radiation detector, which comprises a first layer of a crystal material having relatively poor mechanical properties, however having a high energy resolution; and a second layer of a crystal material having relatively good mechanical and optical properties. Both layers are arranged in sandwich form.
摘要翻译：提供了一种用于辐射检测器的闪烁晶体，其包括具有相对差的机械性能但具有高能量分辨率的晶体材料的第一层; 以及具有相对良好的机械和光学性质的第二层晶体材料。两层以三明治形式布置。

10. 发明授权

US4574478A Method and device for demounting in a radiation detector a photomultiplier tube 失效
标题翻译：用于在放射线检测器中拆卸光电倍增管的方法和装置
公开(公告)号：US4574478A
公开(公告)日：1986-03-11
申请号：US497484
申请日：1983-05-24
申请人： Dennis E. Persyk , Everett W. Stoub
发明人： Dennis E. Persyk , Everett W. Stoub
IPC分类号： G01T1/20 , G01T1/202 , B26B27/00
CPC分类号： G01T1/202 , G01T1/20 , Y10T156/1906 , Y10T29/53283
摘要： A method and device are provided for demounting in a radiation detector a photomultiplier tube the bottom of which is solely bonded with a scintillation crystal assembly by means of an elastic light transparent adhesive. A shearing tool is placed at the bond between photomultiplier tube and scintillation crystal assembly which is operated such that it shears the bond. Especially as a shearing tool a thread is placed around the bond such that it forms a noose. The thread ends have been wrapped around a rod. When twisting the rod the thread continues to wind around the rod thereby making the loop smaller and shearing the bond.
摘要翻译：提供了一种方法和装置，用于在辐射检测器中拆卸光电倍增管，光电倍增管的底部通过弹性光透明粘合剂与闪烁晶体组件单独结合。剪切工具被放置在光电倍增管和闪烁晶体组件之间的结合处，其被操作以使其剪切结合。特别是作为剪切工具，线圈被放置在结合处，使得它形成一个绞索。螺纹端部已经缠绕在杆上。当扭转杆时，线继续围绕杆缠绕，从而使得环更小并剪切结合。

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