WO2016067431A1 - 放射線検出器 - Google Patents
放射線検出器 Download PDFInfo
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- WO2016067431A1 WO2016067431A1 PCT/JP2014/078986 JP2014078986W WO2016067431A1 WO 2016067431 A1 WO2016067431 A1 WO 2016067431A1 JP 2014078986 W JP2014078986 W JP 2014078986W WO 2016067431 A1 WO2016067431 A1 WO 2016067431A1
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- adder
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- radiation detector
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/2018—Scintillation-photodiode combinations
- G01T1/20184—Detector read-out circuitry, e.g. for clearing of traps, compensating for traps or compensating for direct hits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/2018—Scintillation-photodiode combinations
- G01T1/20182—Modular detectors, e.g. tiled scintillators or tiled photodiodes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/2018—Scintillation-photodiode combinations
- G01T1/20183—Arrangements for preventing or correcting crosstalk, e.g. optical or electrical arrangements for correcting crosstalk
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/2018—Scintillation-photodiode combinations
- G01T1/20185—Coupling means between the photodiode and the scintillator, e.g. optical couplings using adhesives with wavelength-shifting fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/24—Measuring radiation intensity with semiconductor detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/24—Measuring radiation intensity with semiconductor detectors
- G01T1/247—Detector read-out circuitry
Definitions
- the present invention relates to a radiation detector in which a light receiving element is optically coupled to two or more scintillators.
- a photomultiplier tube has been used as a light receiving element having a plurality of channels (output terminals) (see, for example, Patent Document 1).
- a semiconductor light receiving element is used as a light receiving element having an (output terminal).
- Patent Document 1 Japanese Patent Application Laid-Open No. 2005-037363, a reflector is interposed between adjacent scintillators constituting the scintillator array in order to improve the incident position discrimination ability and detection ability of ⁇ rays. ing.
- FIG. 9 is a side view showing a configuration of a conventional radiation detector
- FIG. 10 is a circuit diagram showing configurations of an amplifier and a timing generation circuit in the conventional radiation detector.
- the semiconductor light receiving element 120 is configured to be optically coupled to two or more (three in FIG. 9) scintillators 111.
- the amplifier 130 for amplifying the signal obtained by each semiconductor light receiving element 120 is provided in the same number (64 in FIG. 10) as the semiconductor light receiving element 120 to generate timing.
- the circuit 140 is connected.
- the timing generation circuit 140 includes an adder 141 that adds all signals amplified by the amplifier 130 and a trigger generation circuit 142 that generates a trigger for the signals added by the adder 141.
- a timing signal is generated based on the trigger generated by the trigger generation circuit 142.
- an individual amplifier 130 is arranged for each channel of the semiconductor light receiving element, and the adder 141 adds the outputs (amplified signals) of all the amplifiers 130 to generate a timing signal. It is carried out.
- the present invention has been made in view of such circumstances, and an object thereof is to provide a radiation detector capable of ensuring a high S / N ratio and obtaining an accurate timing signal.
- the radiation detector according to the present invention includes a scintillator array composed of a plurality of scintillators and a plurality of semiconductor light receiving elements less than the number of scintillators, and the semiconductor light receiving elements are optically connected to two or more scintillators.
- the scintillator array is configured by dividing the scintillator array into regions by reflectors, and an amplifier that amplifies a signal obtained by each semiconductor light receiving element is output from the semiconductor light receiving element.
- a first adder for adding a plurality of signals respectively amplified by the amplifier in the region divided by the reflector in a one-to-one correspondence with the terminal is provided for each region divided by the reflector
- a first trigger generation circuit for generating a trigger of the signal added by the first adder is provided for each region divided by the reflecting material. It is characterized in further comprising an encoder to combine a signal based on the trigger generated respectively by the first trigger generating circuit for each of regions divided by the reflecting member into one.
- the radiation detector according to the present invention includes a scintillator array composed of a plurality of scintillators and a plurality of semiconductor light receiving elements smaller than the number of scintillators. Since the semiconductor light receiving elements are optically coupled to two or more scintillators, the semiconductor light receiving elements share the optical information from the two or more scintillators.
- the scintillator array is optically divided into a plurality of regions (blocks) by configuring the scintillator array for each region using a reflector.
- amplifiers for amplifying signals obtained from the respective semiconductor light receiving elements are provided in the same number of one-to-one as the output terminals of the semiconductor light receiving elements.
- a first adder for adding a plurality of signals respectively amplified by the amplifier in the region divided by the reflector is provided for each region divided by the reflector
- a first trigger generation circuit that generates a trigger of the signal added by the first adder is provided for each region divided by the reflecting material.
- the radiation detector according to the present invention includes a second adder for adding all signals amplified by the amplifier, and a second trigger generation circuit for generating a trigger for the signals added by the second adder.
- a second adder for adding all signals amplified by the amplifier
- a second trigger generation circuit for generating a trigger for the signals added by the second adder.
- Compton scattering in the scintillator may cause radiation to pass through the reflecting material and degrade the signal.
- the reflector does not necessarily reflect all the light generated by the scintillator, so a part of the light generated by the scintillator near the reflector passes through the reflector and the signal is transmitted. May deteriorate. Therefore, even if radiation or light passes through the reflecting material and signal degradation occurs, the above-described second adder and second trigger generation circuit are provided, and the trigger of the signal obtained by adding all signals is obtained. By generating, an accurate timing signal can be obtained.
- the first adder and the second adder may be connected in parallel to the amplifier, or the first adder, You may connect in series of the 2nd adder in order.
- the second adder can add using the signal added by the first adder. it can.
- the first adder for adding a plurality of signals respectively amplified by the amplifier in the region divided by the reflecting material is provided for each region divided by the reflecting material
- a first trigger generation circuit that generates a trigger of the signal added by the first adder is provided for each region divided by the reflecting material.
- FIG. 3 is a circuit diagram illustrating configurations of an amplifier and a timing generation circuit in the radiation detector according to the first embodiment. It is the top view of the radiation detector which concerns on Example 1, 2 which showed the outline
- 6 is a timing chart showing an outline of timing signal generation in a conventional configuration for comparison with FIG. 5.
- 3 is a timing chart illustrating an outline of timing signal generation in the configuration according to Embodiment 1; FIG.
- FIG. 9 is a circuit diagram illustrating a configuration of an amplifier and a timing generation circuit in the radiation detector according to the second embodiment, in which a first adder and a second adder are connected in parallel to the amplifier.
- FIG. 6 is a circuit diagram illustrating a configuration of an amplifier and a timing generation circuit in the radiation detector according to the second embodiment, in which a first adder and a second adder are connected in series to the amplifier in order.
- 10 is a timing chart showing an outline of generation of timing signals before / after addition in the configuration according to Embodiment 2. It is a side view which shows the structure of the conventional radiation detector. It is a circuit diagram which shows the structure of the amplifier and timing generation circuit in the conventional radiation detector.
- FIG. 1A is a plan view showing the configuration of the radiation detector according to the first and second embodiments
- FIG. 1B is a side view of FIG. 1A
- FIG. 2 is a circuit diagram showing a configuration of an amplifier and a timing generation circuit in the radiation detector according to FIG.
- the semiconductor light-receiving element 20 of 64 vertical and horizontal 8 ⁇ 8) is provided in FIG.
- the semiconductor light receiving element 20 is configured to be optically coupled to two or more (three in FIG. 1 as in FIG. 9) scintillators 11. As shown in FIG. 1, when two semiconductor light receiving elements 20 are arranged for every five scintillators 11 in a 20 ⁇ 20 scintillator 11, the number of semiconductor light receiving elements 20 is 8 ⁇ 8.
- the semiconductor light receiving element 20 is not particularly limited as long as it is a light receiving element having one channel (output terminal).
- the semiconductor light receiving element 20 may be composed of an avalanche photodiode (APD: Avalanche Photo Diode).
- APD Avalanche Photo Diode
- a Geiger mode avalanche photodiode (GAPD) for driving an avalanche photodiode (APD) in a Geiger mode for example, a silicon photomultiplier (Si-PM) may be configured.
- the semiconductor light receiving element 20 does not necessarily have a single channel (output terminal), and may be a semiconductor light receiving element having an array configuration having a plurality of channels (output terminals) in one chip.
- the scintillator array 10 is divided into regions by a reflecting material 12.
- the scintillator array 10 is optically divided into four regions (blocks) by interposing a total of two reflectors 12 vertically and horizontally in the center of the scintillator array 10.
- the respective areas are 10A, 10B, 10C, and 10D.
- the ten scintillators 11, 4 are arranged so that the reflector 12 is interposed in the center of the scintillator array 10.
- the reflector 12 is installed at the position of the two semiconductor light receiving elements 20.
- the number of the reflectors 12 and the number of regions divided by the reflectors 12 are not limited to the numbers shown in FIG. 1 (two reflectors and four regions).
- the scintillator array 10 may be optically divided into 16 regions (blocks) by the reflective material 12 with the material 12 interposed.
- the number of the reflectors 12 arranged vertically and horizontally and the number of regions divided by the reflector 12 vertically and horizontally are not necessarily the same.
- the radiation detector 1 has the same number of amplifiers 30 that amplify signals obtained by the respective semiconductor light receiving elements 20 (see FIG. 1) as the semiconductor light receiving elements 20 (one in a figure). Similar to FIG. 10, it is provided in 64) in FIG.
- the first timing generation circuit 40 is arranged for each of the regions 10A, 10B, 10C, and 10D (see FIG. 1) divided by the reflector 12 (see FIG. 1). Then, the timing signal is generated based on the trigger generated by the first trigger generation circuit 42 for each of the regions 10A, 10B, 10C, and 10D. Note that the first timing generation circuit 40 adds a plurality of signals (see “ ⁇ 16” in FIG. 2) amplified by the amplifier 30 in the regions 10A, 10B, 10C, and 10D divided by the reflector 12. And a first trigger generation circuit 42 that generates a trigger of the signal added by the first adder 41.
- the radiation detector 1 outputs a plurality of signals (see “ ⁇ 16” in FIG. 2) amplified by the amplifier 13 in the regions 10A, 10B, 10C, and 10D divided by the reflecting material 12, respectively.
- the 1st adder 41 to add is provided for every area
- FIG. Further, the radiation detector 1 includes a first trigger generation circuit 42 that generates a trigger of the signal added by the first adder 41 for each of the regions 10A, 10B, 10C, and 10D divided by the reflector 12. Yes.
- the radiation detector 1 is an encoder that combines the signals (timing signals) based on the triggers generated by the first trigger generation circuit 42 for each of the regions 10A, 10B, 10C, and 10D divided by the reflecting material 12. 50.
- the first trigger generation circuit 42 is not particularly limited as long as it is a circuit element that generates a signal trigger.
- the first trigger generation circuit 42 may be configured by a comparator or a constant fraction discriminator (CFD: “Constant” Fraction ”Discriminator).
- CFD Constant Fraction ”Discriminator
- the configuration of the first trigger generation circuit 42 using a comparator is effective when generating a timing signal (timing generation signal) when the timing generation threshold level is equal to or higher than the timing generation threshold level Th as shown in FIG.
- the constant fraction discriminator (CFD) One trigger generation circuit 42 is preferably configured.
- the encoder 50 is not particularly limited as long as it is a circuit element that combines signals into one.
- the encoder 50 may be configured by OR logic. As shown in FIG. 5 to be described later, when one of the timing signal T 11 of the first event and the timing signal T 12 of the next event is generated, the encoder 50 is configured by OR logic, so that OR the final timing signal T 13 is a logic output can be accurately generated.
- the number of divided blocks that is, the areas 10A, 10B, 10C, and 10D divided by the reflector 12
- Nblk the number of divided blocks
- the signal level is S
- FIG. 3 is a plan view of the radiation detector according to the first and second embodiments showing an outline of continuous incidence of ⁇ rays
- FIG. 4 is a timing signal generation in a conventional configuration for comparison with FIG.
- FIG. 5 is a timing chart illustrating an outline of timing signal generation in the configuration according to the first embodiment.
- the first radiation event is E 1 and the next radiation event (incident event) is E 2 . 4 and 5, the timing generation threshold level is Th.
- the first radiation event signal is S 111
- the next radiation event signal is S 112
- the ideal timing signal is T 110
- the timing generation signal is S 120 , (generated based on the timing generation signal S 120) a timing signal to T 120.
- the first radiation event signal is S 11
- the next radiation event signal is S 12
- the first event timing signal is T 11
- the next event timing signal is set.
- the signal and T 12 the final timing signal is an OR logic output and T 13.
- next radiation event signal S 112 when the next radiation event signal S 112 is generated before the first radiation event signal S 111 converges as shown in FIG. 4, ideally, the timing signal is ideal for each event. Is generated as a typical timing signal T110. However, in the conventional configuration, two signals (first radiation event signal S 111 and next radiation event signal S 112 ) are superimposed and generated as a timing generation signal S 120 . In this way, the timing signal of the next event is not generated or a timing signal that is off is generated.
- the timing generation signal S120 is expressed as follows. Generated by superposition. That is, the timing generation signal S 120 obtained by the superimposition is obtained when there is no radiation event (when the first radiation event signal S 111 falls, the timing is less than the timing generation threshold level Th, and the next radiation event signal S 112 is The timing generation threshold level Th is also equal to or higher than the timing generation threshold level Th when rising. As a result, the timing signal T 120 is generated while the timing generation signal S 120 obtained by the superposition is in the timing generation threshold Th or more.
- the scintillator array 10 including a plurality (400 in each embodiment) of scintillators 11 and a plurality (64 in each embodiment) of semiconductor light reception smaller than the number of scintillators 11.
- the device 20 is provided. Since the semiconductor light receiving elements 20 are optically coupled to two or more (three in each embodiment) scintillators 11, optical information from two or more (three) scintillators 11 is used as the semiconductor light receiving elements. 20 shares.
- the scintillator array 10 is divided into regions by the reflecting material 12 so that the scintillator array 10 is optically divided into a plurality (four in each embodiment) of regions (blocks).
- the same number of amplifiers 30 (64 in each embodiment) as those of the semiconductor light receiving elements 20 are provided to amplify signals obtained by the respective semiconductor light receiving elements 20.
- a first adder 41 that adds a plurality of (16 in each embodiment) signals respectively amplified by the amplifier 30 in a region divided by the reflective material 12 is provided as a reflective material.
- a first trigger generation circuit 42 that generates a trigger for the signal added by the first adder 41 for each region divided by the reflector 12.
- FIG. 6 is a configuration of an amplifier and a timing generation circuit in the radiation detector according to the second embodiment.
- FIG. 6 is a circuit diagram in which a first adder and a second adder are connected in parallel to the amplifier.
- FIG. 8 is a configuration of an amplifier and a timing generation circuit in the radiation detector according to the second embodiment, and is a circuit diagram in which a first adder and a second adder are connected in series to the amplifier in this order.
- FIG. 6 is a timing chart showing an outline of generation of a timing signal before / after addition in the configuration according to FIG.
- a second adder 46 that adds all (64 in FIG. 6 or FIG. 7) signals amplified by the amplifier 30, and the second adder 46.
- a second trigger generation circuit 47 for generating a trigger for the signal added in (1).
- the second timing generation circuit 45 is arranged at the branch destination after branching downstream from the amplifier 30.
- the second timing generation circuit 45 includes the second adder 46 and the second trigger generation circuit 47 described above.
- Compton scattering in the scintillator may cause radiation to pass through the reflecting material and degrade the signal.
- the reflector does not necessarily reflect all the light generated by the scintillator, so a part of the light generated by the scintillator near the reflector passes through the reflector and the signal is transmitted. May deteriorate.
- the timing generation threshold level is assumed to be Th as in FIGS. 4 and 5 described above. Further, it is assumed that the signal is dispersed in two regions by radiation or light passing through the reflecting material.
- One timing generation signal distributed in two regions is S A
- the other timing generation signal is S B (where S A > S B ), and is generated based on the timing generation signal S A
- the timing signal to be generated is T A
- the timing signal generated based on the timing generation signal S B is T B.
- a signal obtained by adding all signals here, an added value of the timing generation signal S A and the timing generation signal S B
- ST timing generation is obtained by adding all the signals.
- the timing generation signal S A added by the first adder 41 when the radiation or light passes through the reflector 12 (see FIG. 1) and , timing generation signal S B added by the first adder 41 is dispersed in two regions.
- the first trigger generation circuit 42 (see FIG. 2) generates the timing signal T A based on the trigger of the timing generation signal S A and the timing signal T B based on the trigger of the timing generation signal S B.
- the first trigger generation circuit 42 generates it.
- generation time of the timing signal T A becomes longer than the generation time of the timing signal T B, includes time for generating the timing signal T B the generation time of the timing signal T A . Accordingly, these timing signals T A, the T B, the encoder 50 consisting of OR logic (see Figure 2) is also integrated into one, generation time is outputted longer timing signal T A.
- timing generation signals S A and S B are deteriorated due to dispersion, and a timing generation signal S T obtained by adding all signals should be generated. is there. Therefore, S T> S A, and the timing signal T T generated based on long if the timing generation signal S T is originally, the accurate timing signal.
- signals are combined into one by the encoder 50 is a timing signal T A, actually the generation time of the obtained timing signal T A, than generation time of the timing generation signal S T that should be originally obtained It will be shorter.
- the second adder 46 (see FIG. 6 or FIG. 7) and the second trigger generation described above are generated. It is possible to obtain an accurate timing signal (timing signal T T in FIG. 8) by providing a circuit 47 (see FIG. 6 or FIG. 7) and generating a trigger of a signal obtained by adding all signals. it can.
- the first adder 41 and the second adder 46 are connected in parallel to the amplifier 30 as shown in FIG. As shown in FIG. 7, the first adder 41 and the second adder 46 may be connected in series to the amplifier 30 as shown in FIG. When the amplifier 30 is connected in series in the order of the first adder 41 and the second adder 46 as in the latter (FIG. 7), the second adder is used by using the signal added by the first adder 41.
- the adder 46 can perform addition.
- the output of the signal (timing signal) added by the second trigger generation circuit 47 is not particularly shown, but it may be connected to the encoder 50 of FIG. 6 or 7.
- it has a changeover switch (not shown) that switches according to the mode, and either a signal obtained by the encoder 50 of FIG. 6 or 7 or a signal (timing signal) added by the second trigger generation circuit 47 is used.
- You may comprise so that it may switch with a crab change switch.
- the signal (timing signal) added by the second trigger generation circuit 47 is used.
- Is output and in other cases, it is switched to a mode in which the signal obtained by the encoder 50 is output.
- the present invention is not limited to the above embodiment, and can be modified as follows.
- each scintillator may be applied to a DOI detector configured by laminating each scintillator in the ⁇ -ray depth direction. That is, the DOI detector is constructed by laminating each scintillator in the ⁇ -ray depth direction, and the coordinate between the depth direction in which the interaction occurs and the lateral direction (direction parallel to the incident surface). Information is obtained by calculating the center of gravity. This makes it possible to discriminate the light source position (DOI: Depth of Interaction) in the depth direction where the interaction has occurred.
- DOI Depth of Interaction
- a reflective material is appropriately interposed in the DOI detector in order to improve spatial resolution.
- the light guide is not provided, but the present invention may be applied to a detector having a light guide.
- a light guide for guiding light is optically coupled to the scintillator array and the semiconductor light receiving element between the scintillator array and the semiconductor light receiving element. Note that, similarly to the scintillator array, the light guide is also configured to be divided into regions by reflecting materials.
- the amplifiers were provided in the same number as the semiconductor light receiving elements, but each chip had a plurality of output terminals.
- the present invention can be applied to semiconductor light receiving elements having an array configuration. In the case of a semiconductor light receiving element having an array configuration having a plurality of output terminals in one chip, it is sufficient to provide the same number of amplifiers as one-to-one with the output terminals of the semiconductor light receiving element.
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Abstract
Description
すなわち、この発明に係る放射線検出器は、複数のシンチレータからなるシンチレータアレイと、前記シンチレータの数よりも少ない複数の半導体受光素子とを備え、前記半導体受光素子が2つ以上の前記シンチレータに光学的に結合して構成された放射線検出器であって、前記シンチレータアレイを反射材によって領域毎に区分して構成し、各々の半導体受光素子で得られた信号を増幅する増幅器を半導体受光素子の出力端子と一対一に同数に備え、前記反射材によって区分された領域内において前記増幅器でそれぞれ増幅された複数の信号を加算する第1加算器を、反射材によって区分された領域毎に備えるとともに、前記第1加算器で加算された信号のトリガを生成する第1トリガ生成回路を、反射材によって区分された領域毎に備え、反射材によって区分された領域毎に前記第1トリガ生成回路でそれぞれ生成された前記トリガに基づく信号を1つにまとめるエンコーダを備えることを特徴とするものである。
10 … シンチレータアレイ
11 … シンチレータ
12 … 反射材
20 … 半導体受光素子
30 … 増幅器
41 … 第1加算器
42 … 第1トリガ生成回路
46 … 第2加算器
47 … 第2トリガ生成回路
Claims (4)
- 複数のシンチレータからなるシンチレータアレイと、
前記シンチレータの数よりも少ない複数の半導体受光素子と
を備え、
前記半導体受光素子が2つ以上の前記シンチレータに光学的に結合して構成された放射線検出器であって、
前記シンチレータアレイを反射材によって領域毎に区分して構成し、
各々の半導体受光素子で得られた信号を増幅する増幅器を半導体受光素子の出力端子と一対一に同数に備え、
前記反射材によって区分された領域内において前記増幅器でそれぞれ増幅された複数の信号を加算する第1加算器を、反射材によって区分された領域毎に備えるとともに、
前記第1加算器で加算された信号のトリガを生成する第1トリガ生成回路を、反射材によって区分された領域毎に備え、
反射材によって区分された領域毎に前記第1トリガ生成回路でそれぞれ生成された前記トリガに基づく信号を1つにまとめるエンコーダを備える
ことを特徴とする放射線検出器。 - 請求項1に記載の放射線検出器において、
前記増幅器でそれぞれ増幅された全ての信号を加算する第2加算器と、
当該第2加算器で加算された信号のトリガを生成する第2トリガ生成回路と
を備えることを特徴とする放射線検出器。 - 請求項2に記載の放射線検出器において、
前記増幅器に対して前記第1加算器および前記第2加算器を並列に接続することを特徴とする放射線検出器。 - 請求項2に記載の放射線検出器において、
前記増幅器に対して前記第1加算器,前記第2加算器の順に直列に接続することを特徴とする放射線検出器。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2014/078986 WO2016067431A1 (ja) | 2014-10-30 | 2014-10-30 | 放射線検出器 |
EP14904925.6A EP3214465A4 (en) | 2014-10-30 | 2014-10-30 | Radiation detector |
JP2016556139A JP6319458B2 (ja) | 2014-10-30 | 2014-10-30 | 放射線検出器 |
US15/523,077 US10746885B2 (en) | 2014-10-30 | 2014-10-30 | Radiation detector |
TW104133607A TWI595256B (zh) | 2014-10-30 | 2015-10-14 | Radiographic detector |
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PCT/JP2014/078986 WO2016067431A1 (ja) | 2014-10-30 | 2014-10-30 | 放射線検出器 |
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EP (1) | EP3214465A4 (ja) |
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JP2001503526A (ja) * | 1996-11-08 | 2001-03-13 | コミツサリア タ レネルジー アトミーク | 細胞状構造を有する一組の光検出器からの信号処理プロセスおよび装置と、ガンマカメラへの適用 |
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CN101389979A (zh) * | 2006-12-27 | 2009-03-18 | 株式会社东芝 | 射线检测器 |
WO2009083852A2 (en) * | 2007-12-21 | 2009-07-09 | Koninklijke Philips Electronics N.V. | Radiation-sensitive detector with a scintillator in a composite resin |
EP2461183B1 (en) * | 2010-10-19 | 2018-10-03 | Toshiba Medical Systems Corporation | Positron emission tomography detector module, radiation detector, positron emission tomography scanner system, method of processing signals, and method of manufacturing radiation detector module |
US8357903B2 (en) * | 2010-10-19 | 2013-01-22 | Kabushiki Kaisha Toshiba | Segmented detector array |
EP2461182B1 (en) | 2010-12-01 | 2014-06-04 | European Space Agency | Method and apparatus for determining an integrity indicating parameter indicating the integrity of positioning information determined in a global positioning system |
JP5582370B2 (ja) | 2010-12-09 | 2014-09-03 | 独立行政法人理化学研究所 | ガンマ線を利用する画像化装置、画像信号処理装置およびガンマ線測定データの画像処理方法 |
EP2816800B1 (en) * | 2012-03-29 | 2019-06-26 | Shimadzu Corporation | Semiconductor photomultiplier element |
JP5922518B2 (ja) * | 2012-07-20 | 2016-05-24 | 浜松ホトニクス株式会社 | シンチレータパネル及び放射線検出器 |
WO2014135465A1 (en) * | 2013-03-08 | 2014-09-12 | Koninklijke Philips N.V. | Timestamping detected radiation quanta |
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- 2014-10-30 JP JP2016556139A patent/JP6319458B2/ja active Active
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JP2001503526A (ja) * | 1996-11-08 | 2001-03-13 | コミツサリア タ レネルジー アトミーク | 細胞状構造を有する一組の光検出器からの信号処理プロセスおよび装置と、ガンマカメラへの適用 |
JP2005037363A (ja) * | 2003-06-30 | 2005-02-10 | Shimadzu Corp | 放射線検出器およびその製造方法 |
JP2012253024A (ja) * | 2011-06-06 | 2012-12-20 | Toshiba Corp | 光センサ、ガンマ線検出器、及び陽電子放出コンピュータ断層撮影装置 |
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TWI595256B (zh) | 2017-08-11 |
TW201616153A (zh) | 2016-05-01 |
JPWO2016067431A1 (ja) | 2017-06-01 |
EP3214465A1 (en) | 2017-09-06 |
US10746885B2 (en) | 2020-08-18 |
EP3214465A4 (en) | 2017-11-15 |
US20170315243A1 (en) | 2017-11-02 |
JP6319458B2 (ja) | 2018-05-09 |
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