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公开(公告)号：US08148695B2
公开(公告)日：2012-04-03
申请号：US13107282
申请日：2011-05-13
IPC分类号： G01T1/164
CPC分类号： G01T1/249 , G01T1/2018
摘要： A PET apparatus comprises a plurality of detector units in the circumferential direction, wherein the detector unit includes a plurality of unit substrates therein, and wherein the unit substrate includes: a plurality of detectors upon which a γ-ray is incident; and an analog ASIC and digital ASIC for processing a γ-ray detection signal outputted by each of the detectors. The analog ASIC includes two slow systems having mutually different time constants, each of which outputs a pulseheight value. A noise determination part of the digital ASIC determines whether a relevant detection signal is an intended γ-ray detection signal or a noise based on a correlation between the pulseheight values, and a noise counting part counts the number of times of noise determination, and a detector output signal processing control part controls the signal processing with respect to an output signal from a relevant detector based on the count.
摘要翻译： PET装置包括沿圆周方向的多个检测器单元，其中所述检测器单元包括多个单元基板，并且其中所述单元基板包括：多个检测器，其上存在γ射线; 以及用于处理由每个检测器输出的γ射线检测信号的模拟ASIC和数字ASIC。 模拟ASIC包括具有相互不同的时间常数的两个慢速系统，每个时间常数输出脉冲高度值。 数字ASIC的噪声确定部分基于脉冲高度值之间的相关性来确定相关检测信号是否是期望的γ射线检测信号或噪声，并且噪声计数部分对噪声确定的次数进行计数，并且 检测器输出信号处理控制部分基于计数来控制来自相关检测器的输出信号的信号处理。
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公开(公告)号：US20100282974A1
公开(公告)日：2010-11-11
申请号：US12837877
申请日：2010-07-16
IPC分类号： G01T1/161
CPC分类号： G01T1/249 , G01T1/2018
摘要： A PET apparatus comprises a plurality of detector units in the circumferential direction, wherein the detector unit includes a plurality of unit substrates therein, and wherein the unit substrate includes: a plurality of detectors upon which a γ-ray is incident; and an analog ASIC and digital ASIC for processing a γ-ray detection signal outputted by each of the detectors. The analog ASIC includes two slow systems having mutually different time constants, each of which outputs a pulseheight value. A noise determination part of the digital ASIC determines whether a relevant detection signal is an intended γ-ray detection signal or a noise based on a correlation between the pulseheight values, and a noise counting part counts the number of times of noise determination, and a detector output signal processing control part controls the signal processing with respect to an output signal from a relevant detector based on the count.
摘要翻译： PET装置包括沿圆周方向的多个检测器单元，其中所述检测器单元包括多个单元基板，并且其中所述单元基板包括：多个检测器，其上存在γ射线; 以及用于处理由每个检测器输出的γ射线检测信号的模拟ASIC和数字ASIC。 模拟ASIC包括具有相互不同的时间常数的两个慢速系统，每个时间常数输出脉冲高度值。 数字ASIC的噪声确定部分基于脉冲高度值之间的相关性来确定相关检测信号是否是期望的γ射线检测信号或噪声，并且噪声计数部分对噪声确定的次数进行计数，并且 检测器输出信号处理控制部分基于计数来控制来自相关检测器的输出信号的信号处理。
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公开(公告)号：US07795590B2
公开(公告)日：2010-09-14
申请号：US11861977
申请日：2007-09-26
IPC分类号： G01T1/164
CPC分类号： G01T1/249 , G01T1/2018
摘要： A PET apparatus comprises a plurality of detector units in the circumferential direction, wherein the detector unit includes a plurality of unit substrates therein, and wherein the unit substrate includes: a plurality of detectors upon which a γ-ray is incident; and an analog ASIC and digital ASIC for processing a γ-ray detection signal outputted by each of the detectors. The analog ASIC includes two slow systems having mutually different time constants, each of which outputs a pulseheight value. A noise determination part of the digital ASIC determines whether a relevant detection signal is an intended γ-ray detection signal or a noise based on a correlation between the pulseheight values, and a noise counting part counts the number of times of noise determination, and a detector output signal processing control part controls the signal processing with respect to an output signal from a relevant detector based on the count.
摘要翻译： PET装置包括沿圆周方向的多个检测器单元，其中所述检测器单元包括多个单元基板，并且其中所述单元基板包括：多个检测器，其上存在γ射线; 以及用于处理由每个检测器输出的γ射线检测信号的模拟ASIC和数字ASIC。 模拟ASIC包括具有相互不同的时间常数的两个慢速系统，每个时间常数输出脉冲高度值。 数字ASIC的噪声确定部分基于脉冲高度值之间的相关性来确定相关检测信号是否是期望的γ射线检测信号或噪声，并且噪声计数部分对噪声确定的次数进行计数，并且 检测器输出信号处理控制部分基于计数来控制来自相关检测器的输出信号的信号处理。
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公开(公告)号：US20090114826A1
公开(公告)日：2009-05-07
申请号：US11861977
申请日：2007-09-26
IPC分类号： G01T1/164
CPC分类号： G01T1/249 , G01T1/2018
摘要： A PET apparatus comprises a plurality of detector units in the circumferential direction, wherein the detector unit includes a plurality of unit substrates therein, and wherein the unit substrate includes: a plurality of detectors upon which a γ-ray is incident; and an analog ASIC and digital ASIC for processing a γ-ray detection signal outputted by each of the detectors. The analog ASIC includes two slow systems having mutually different time constants, each of which outputs a pulseheight value. A noise determination part of the digital ASIC determines whether a relevant detection signal is an intended γ-ray detection signal or a noise based on a correlation between the pulseheight values, and a noise counting part counts the number of times of noise determination, and a detector output signal processing control part controls the signal processing with respect to an output signal from a relevant detector based on the count.
摘要翻译： PET装置包括沿圆周方向的多个检测器单元，其中所述检测器单元包括多个单元基板，并且其中所述单元基板包括：多个检测器，伽马射线在其上入射; 以及用于处理由每个检测器输出的伽马射线检测信号的模拟ASIC和数字ASIC。 模拟ASIC包括具有相互不同的时间常数的两个慢速系统，每个时间常数输出脉冲高度值。 数字ASIC的噪声确定部分基于脉冲高度值之间的相关性来确定相关检测信号是否是预期的伽马射线检测信号或噪声，并且噪声计数部分对噪声确定的次数进行计数，并且 检测器输出信号处理控制部分基于计数来控制来自相关检测器的输出信号的信号处理。
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公开(公告)号：US20110215254A1
公开(公告)日：2011-09-08
申请号：US13107282
申请日：2011-05-13
IPC分类号： G01T1/00
CPC分类号： G01T1/249 , G01T1/2018
摘要： A PET apparatus comprises a plurality of detector units in the circumferential direction, wherein the detector unit includes a plurality of unit substrates therein, and wherein the unit substrate includes: a plurality of detectors upon which a γ-ray is incident; and an analog ASIC and digital ASIC for processing a γ-ray detection signal outputted by each of the detectors. The analog ASIC includes two slow systems having mutually different time constants, each of which outputs a pulseheight value. A noise determination part of the digital ASIC determines whether a relevant detection signal is an intended γ-ray detection signal or a noise based on a correlation between the pulseheight values, and a noise counting part counts the number of times of noise determination, and a detector output signal processing control part controls the signal processing with respect to an output signal from a relevant detector based on the count.
摘要翻译： PET装置包括沿圆周方向的多个检测器单元，其中所述检测器单元包括多个单元基板，并且其中所述单元基板包括：多个检测器，其上存在γ射线; 以及用于处理由每个检测器输出的γ射线检测信号的模拟ASIC和数字ASIC。 模拟ASIC包括具有相互不同的时间常数的两个慢速系统，每个时间常数输出脉冲高度值。 数字ASIC的噪声确定部分基于脉冲高度值之间的相关性来确定相关检测信号是否是期望的γ射线检测信号或噪声，并且噪声计数部分对噪声确定的次数进行计数，并且 检测器输出信号处理控制部分基于计数来控制来自相关检测器的输出信号的信号处理。
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公开(公告)号：US07964849B2
公开(公告)日：2011-06-21
申请号：US12837877
申请日：2010-07-16
IPC分类号： G01T1/161
CPC分类号： G01T1/249 , G01T1/2018
摘要： A PET apparatus comprises a plurality of detector units in the circumferential direction, wherein the detector unit includes a plurality of unit substrates therein, and wherein the unit substrate includes: a plurality of detectors upon which a γ-ray is incident; and an analog ASIC and digital ASIC for processing a γ-ray detection signal outputted by each of the detectors. The analog ASIC includes two slow systems having mutually different time constants, each of which outputs a pulseheight value. A noise determination part of the digital ASIC determines whether a relevant detection signal is an intended γ-ray detection signal or a noise based on a correlation between the pulseheight values, and a noise counting part counts the number of times of noise determination, and a detector output signal processing control part controls the signal processing with respect to an output signal from a relevant detector based on the count.
摘要翻译： PET装置包括沿圆周方向的多个检测器单元，其中所述检测器单元包括多个单元基板，并且其中所述单元基板包括：多个检测器，其上存在γ射线; 以及用于处理由每个检测器输出的γ射线检测信号的模拟ASIC和数字ASIC。 模拟ASIC包括具有相互不同的时间常数的两个慢速系统，每个时间常数输出脉冲高度值。 数字ASIC的噪声确定部分基于脉冲高度值之间的相关性来确定相关检测信号是否是期望的γ射线检测信号或噪声，并且噪声计数部分对噪声确定的次数进行计数，并且 检测器输出信号处理控制部分基于计数来控制来自相关检测器的输出信号的信号处理。
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公开(公告)号：US08927939B2
公开(公告)日：2015-01-06
申请号：US13580556
申请日：2011-02-03
申请人： Tomoyuki Seino , Yuichiro Ueno , Takafumi Ishitsu
发明人： Tomoyuki Seino , Yuichiro Ueno , Takafumi Ishitsu
IPC分类号： G01T1/24
摘要： The purpose of the present invention is to improve energy resolving power and prevent energy resolving power from deteriorating when a thick semiconductor detection element with a wide energy range is used, in a radiation measuring device using a semiconductor detector and a nuclear medicine diagnostic device. With the present invention, the purpose is achieved by pulsed wave value correction employing the difference of (Hs−Hf) between the pulsed wave height value Hs obtained from the slow speed shaping circuit, and the pulsed wave height value Hf obtained from the fast speed shaping circuit and normalized with respect to Hs. An even more desirable result may be obtained by employing either (Hs−Hf)/Hf or exp(k(Hs−Hf)/Hf), wherein k is a coefficient to be optimized, said optimization being dependent on the measurement assembly.
摘要翻译： 本发明的目的在于在使用半导体检测器的放射线测量装置和核医学诊断装置中，当使用宽能量范围的厚半导体检测元件时，提高能量分辨能力，防止能量分辨能力劣化。 利用本发明，通过使用从慢速整形电路获得的脉冲波高值Hs和从快速成形电路得到的脉冲波高值Hf之间的（Hs-Hf）差的脉冲波值校正， 整形电路并相对于Hs进行归一化。 通过使用（Hs-Hf）/ Hf或exp（k（Hs-Hf）/ Hf）可以获得甚至更理想的结果，其中k是要优化的系数，所述优化取决于测量组件。
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公开(公告)号：US20120326045A1
公开(公告)日：2012-12-27
申请号：US13580556
申请日：2011-02-03
申请人： Tomoyuki Seino , Yuichiro Ueno , Takafumi Ishitsu
发明人： Tomoyuki Seino , Yuichiro Ueno , Takafumi Ishitsu
IPC分类号： G01T1/02
摘要： The purpose of the present invention is to improve energy resolving power and prevent energy resolving power from deteriorating when a thick semiconductor detection element with a wide energy range is used, in a radiation measuring device using a semiconductor detector and a nuclear medicine diagnostic device. With the present invention, the purpose is achieved by pulsed wave value correction employing the difference of (Hs−Hf) between the pulsed wave height value Hs obtained from the slow speed shaping circuit, and the pulsed wave height value Hf obtained from the fast speed shaping circuit and normalized with respect to Hs. An even more desirable result may be obtained by employing either (Hs−Hf)/Hf or exp(k(Hs−Hf)/Hf), wherein k is a coefficient to be optimized, said optimization being dependent on the measurement assembly.
摘要翻译： 本发明的目的在于在使用半导体检测器的放射线测量装置和核医学诊断装置中，当使用宽能量范围的厚半导体检测元件时，提高能量分辨能力，防止能量分辨能力劣化。 利用本发明，通过使用从慢速整形电路获得的脉冲波高值Hs和从快速成形电路得到的脉冲波高值Hf之间的（Hs-Hf）差的脉冲波值校正， 整形电路并相对于Hs进行归一化。 通过使用（Hs-Hf）/ Hf或exp（k（Hs-Hf）/ Hf）可以获得甚至更理想的结果，其中k是要优化的系数，所述优化取决于测量组件。
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9.发明授权公开(公告)号：US08338792B2
公开(公告)日：2012-12-25
申请号：US12708933
申请日：2010-02-19
申请人： Tomoyuki Seino , Yuichiro Ueno , Takafumi Ishitsu
发明人： Tomoyuki Seino , Yuichiro Ueno , Takafumi Ishitsu
IPC分类号： G01T1/24
CPC分类号： G01T1/17
摘要： Provided between a bias power supply and a radiation detector are a noise filter and a bias voltage transmitting circuit. In a state where the bias voltage is applied, the noise filter circuit operates. In a state where the bias voltage is switched on and off, the bias voltage transmitting circuit and the noise filter circuit operate. In a state where the bias voltage is switched on and off, the bias voltage transmitting circuit operates.
摘要翻译： 偏置电源和辐射检测器之间设置有噪声滤波器和偏置电压发射电路。 在施加偏置电压的状态下，噪声滤波器电路工作。 在偏置电压接通和断开的状态下，偏置电压发射电路和噪声滤波器电路工作。 在偏置电压接通和断开的状态下，偏置电压发送电路工作。
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公开(公告)号：US09057789B2
公开(公告)日：2015-06-16
申请号：US13818000
申请日：2011-08-04
申请人： Tomoyuki Seino , Yuichiro Ueno , Takafumi Ishitsu
发明人： Tomoyuki Seino , Yuichiro Ueno , Takafumi Ishitsu
IPC分类号： G01T1/17
摘要： A radiation measuring device includes: a detector that detects radiation; a preamplifier that amplifies a signal outputted from the detector; a shaping amplifier that shapes the waveform of the signal outputted from the preamplifier; an A/D converter that converts the analog signal output from the shaping amplifier to a digital signal; and a digital data processing unit that calculates digital signal output from the A/D converter, wherein energy information of the radiation inputted to the detector is obtained from a pulse height of the pulse signal processed by the preamplifier and the shaping amplifier, and the pulse height of the current pulse is corrected in the digital data processing unit by performing an arithmetic operation using the pulse height information of the current pulse digitalized by the A/D converter, the generation time information of the preceding pulse, and the pulse height information of the preceding pulse.
摘要翻译： 辐射测量装置包括：检测器，其检测辐射; 放大从检测器输出的信号的前置放大器; 整形放大器，其对从前置放大器输出的信号的波形进行整形; A / D转换器，其将从整形放大器输出的模拟信号转换为数字信号; 以及数字数据处理单元，其计算从A / D转换器输出的数字信号，其中，从由前置放大器和整形放大器处理的脉冲信号的脉冲高度获得输入到检测器的辐射的能量信息，并且脉冲 通过使用由A / D转换器数字化的当前脉冲的脉冲高度信息，前一脉冲的生成时间信息和脉冲高度信息进行算术运算，在数字数据处理单元中校正电流脉冲的高度 前面的脉冲。
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