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公开(公告)号：EP2341370A2
公开(公告)日：2011-07-06
申请号：EP10196257.9
申请日：2010-12-21
IPC分类号： G01T1/40
CPC分类号： G01T1/40 , A61B6/037 , A61B6/5205 , A61B6/5258 , G01T1/2985 , G01T7/005
摘要： According to one embodiment, a nuclear medicine diagnosis includes a light signal generating unit (40), photodetection unit (31), measurement unit (355), calculation unit (55), and storage unit (57). The light signal generating unit (40) repeatedly generates light signals. The photodetection unit (31) repeatedly generates first output signals corresponding to intensities of the light signals, repeatedly generates second output signals corresponding to intensities of gamma rays emitted from a subject. The measurement unit (355) repeatedly measures light signal detection times and repeatedly measures gamma ray detection times. The calculation unit (55) calculates a difference between a target gamma ray detection time and a target light signal detection time of the light signal detection times for each of the gamma ray detection times. The target light signal detection time is measured before the target gamma ray detection time. The storage unit (57) stores the calculated difference in association with a target second output signal of the second output signals.
摘要翻译： 根据一个实施例，核医学诊断包括光信号产生单元（40），光电检测单元（31），测量单元（355），计算单元（55）和存储单元（57）。 光信号产生单元（40）重复产生光信号。 光检测单元（31）重复地产生对应于光信号强度的第一输出信号，重复产生对应于从被摄体发射的伽马射线的强度的第二输出信号。 测量单元（355）重复测量光信号检测时间，并重复测量伽马射线检测时间。 计算单元（55）计算每个伽马射线检测时间的目标伽马射线检测时间和光信号检测时间的目标光信号检测时间之间的差。 在目标γ射线检测时间之前测量目标光信号检测时间。 存储单元（57）存储与第二输出信号的目标第二输出信号相关联的计算出的差值。
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公开(公告)号：EP2341370A3
公开(公告)日：2013-05-01
申请号：EP10196257.9
申请日：2010-12-21
CPC分类号： G01T1/40 , A61B6/037 , A61B6/5205 , A61B6/5258 , G01T1/2985 , G01T7/005
摘要： According to one embodiment, a nuclear medicine diagnosis includes a light signal generating unit (40), photodetection unit (31), measurement unit (355), calculation unit (55), and storage unit (57). The light signal generating unit (40) repeatedly generates light signals. The photodetection unit (31) repeatedly generates first output signals corresponding to intensities of the light signals, repeatedly generates second output signals corresponding to intensities of gamma rays emitted from a subject. The measurement unit (355) repeatedly measures light signal detection times and repeatedly measures gamma ray detection times. The calculation unit (55) calculates a difference between a target gamma ray detection time and a target light signal detection time of the light signal detection times for each of the gamma ray detection times. The target light signal detection time is measured before the target gamma ray detection time. The storage unit (57) stores the calculated difference in association with a target second output signal of the second output signals.
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公开(公告)号：EP1818688B1
公开(公告)日：2012-08-08
申请号：EP07002645.5
申请日：2007-02-07
发明人： Takayama, Takuzo , Fujimoto, Katsuhiko , Ohyu, Shigeharu , Sakurai, Yasuo , Shibata, Mariko , Sugiyama, Atsuko , Hashimoto, Keisuke
CPC分类号： G01T1/2985 , A61B6/4258 , G01T1/1663
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4.发明公开
公开(公告)号：EP2397871A2
公开(公告)日：2011-12-21
申请号：EP11170247.8
申请日：2011-06-16
发明人： Moriyasu, Kenta , Takayama, Takuzo
IPC分类号： G01T1/29
CPC分类号： G01T1/2985 , A61B6/037
摘要： According to one embodiment, a TOF-PET apparatus comprising a plurality of detector rings arranged along a central axis thereof. Each of the detector rings comprises a plurality of scintillators and a plurality of photomultipliers. The scintillators are arranged on a substantial circumference around the central axis and generate scintillation in response to pair annihilation gamma-rays from a subject. The photomultipliers generate an electric signal in accordance with the generated scintillation. A length of each of the scintillators along a radial direction of the substantial circumference is set to a range in which a value of a total number of counts/time resolution of coincidence events of pair annihilation gamma-rays is more improved than when a reference scintillator whose probability of interaction with pair annihilation gamma-rays is adjusted to 80% is used under conditions of a constant total volume of the scintillators.
摘要翻译： 根据一个实施例，一种TOF-PET装置包括沿着其中心轴布置的多个检测环。 每个检测器环包括多个闪烁体和多个光电倍增管。 闪烁体布置在围绕中心轴线的实质圆周上，并响应于来自受试者的对湮灭γ射线而产生闪烁。 光电倍增管根据产生的闪烁产生电信号。 沿着实质圆周的径向方向的每个闪烁体的长度被设置为与参考闪烁体相比，对湮灭伽马射线的重合事件的计数/时间分辨率的总和值的改善更多的范围 在闪烁体的总体积的恒定条件下使用与湮灭伽马射线相互作用的概率为80％。
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5.发明公开Positron emission tomography apparatus and nuclear medical image generating method 审中-公开一种用于正电子发射断层扫描和核医学成像程序
公开(公告)号：EP2246712A3
公开(公告)日：2011-05-04
申请号：EP10159999.1
申请日：2010-04-15
IPC分类号： G01T1/29
CPC分类号： G01T1/2985 , A61B6/037
摘要： In a case that a gamma ray has entered into a plurality of scintillators adjacent to each other simultaneously, a detector detects the gamma ray having entered simultaneously. A position calculator calculates the ratio of wave heights representing the energies of the detected gamma ray. The position calculator obtains a trajectory of such a gamma ray that a ratio of distances passed by the gamma ray inside the plurality of scintillators, respectively, coincides with the ratio of the wave heights. The position calculator obtains an intersection between the boundary of the plurality of scintillators and the trajectory, as a passing position of the gamma ray. A reconstructing part executes a back projection process with the trajectory passing through the calculated passing position as a projection position.
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6.发明公开Positron emission tomography apparatus and nuclear medical image generating method 审中-公开Vorrichtungfürdie Positronenemissionstomografie und nuklearmedizinisches Bilderzeugungsverfahren
公开(公告)号：EP2246712A2
公开(公告)日：2010-11-03
申请号：EP10159999.1
申请日：2010-04-15
IPC分类号： G01T1/29
CPC分类号： G01T1/2985 , A61B6/037
摘要： In a case that a gamma ray has entered into a plurality of scintillators adjacent to each other simultaneously, a detector detects the gamma ray having entered simultaneously. A position calculator calculates the ratio of wave heights representing the energies of the detected gamma ray. The position calculator obtains a trajectory of such a gamma ray that a ratio of distances passed by the gamma ray inside the plurality of scintillators, respectively, coincides with the ratio of the wave heights. The position calculator obtains an intersection between the boundary of the plurality of scintillators and the trajectory, as a passing position of the gamma ray. A reconstructing part executes a back projection process with the trajectory passing through the calculated passing position as a projection position.
摘要翻译： 在伽马射线已经同时进入彼此相邻的多个闪烁体的情况下，检测器检测同时进入的伽马射线。 位置计算器计算表示所检测的伽马射线的能量的波高的比率。 位置计算器获得这样的伽马射线的轨迹，使得多个闪烁体内的伽马射线的距离的比率分别与波高的比率一致。 位置计算器获得多个闪烁体的边界与轨迹之间的交点，作为伽马射线的通过位置。 重建部分执行反投影处理，其中轨迹通过计算出的通过位置作为投影位置。
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公开(公告)号：EP2397871B1
公开(公告)日：2020-11-25
申请号：EP11170247.8
申请日：2011-06-16
发明人： Moriyasu, Kenta , Takayama, Takuzo
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公开(公告)号：EP2397871A3
公开(公告)日：2016-12-07
申请号：EP11170247.8
申请日：2011-06-16
发明人： Moriyasu, Kenta , Takayama, Takuzo
CPC分类号： G01T1/2985 , A61B6/037
摘要： According to one embodiment, a TOF-PET apparatus comprising a plurality of detector rings arranged along a central axis thereof. Each of the detector rings comprises a plurality of scintillators and a plurality of photomultipliers. The scintillators are arranged on a substantial circumference around the central axis and generate scintillation in response to pair annihilation gamma-rays from a subject. The photomultipliers generate an electric signal in accordance with the generated scintillation. A length of each of the scintillators along a radial direction of the substantial circumference is set to a range in which a value of a total number of counts/time resolution of coincidence events of pair annihilation gamma-rays is more improved than when a reference scintillator whose probability of interaction with pair annihilation gamma-rays is adjusted to 80% is used under conditions of a constant total volume of the scintillators.
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公开(公告)号：EP2341370B1
公开(公告)日：2018-07-25
申请号：EP10196257.9
申请日：2010-12-21
CPC分类号： G01T1/40 , A61B6/037 , A61B6/5205 , A61B6/5258 , G01T1/2985 , G01T7/005
摘要： According to one embodiment, a nuclear medicine diagnosis includes a light signal generating unit (40), photodetection unit (31), measurement unit (355), calculation unit (55), and storage unit (57). The light signal generating unit (40) repeatedly generates light signals. The photodetection unit (31) repeatedly generates first output signals corresponding to intensities of the light signals, repeatedly generates second output signals corresponding to intensities of gamma rays emitted from a subject. The measurement unit (355) repeatedly measures light signal detection times and repeatedly measures gamma ray detection times. The calculation unit (55) calculates a difference between a target gamma ray detection time and a target light signal detection time of the light signal detection times for each of the gamma ray detection times. The target light signal detection time is measured before the target gamma ray detection time. The storage unit (57) stores the calculated difference in association with a target second output signal of the second output signals.
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