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SCINTILLATION LIGHT DETECTING DEVICE AND RADIATION DETECTING DEVICE

外国特許コード F170009017
整理番号 (S2015-2028-N0)
掲載日 2017年3月29日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2016JP075725
国際公開番号 WO 2017038953
国際出願日 平成28年9月1日(2016.9.1)
国際公開日 平成29年3月9日(2017.3.9)
優先権データ
  • 特願2015-172498 (2015.9.2) JP
発明の名称 (英語) SCINTILLATION LIGHT DETECTING DEVICE AND RADIATION DETECTING DEVICE
発明の概要(英語) The present invention makes it possible to distinguish between signals from a plurality of scintillator elements. This scintillation light detecting device includes: a scintillator array 10 in which are arranged a plurality of scintillator elements having mutually different decay time constants for emitted light generated as a result of an incident radiation event; and a photomultiplier tube 14 which receives light output from the plurality of scintillator elements in the scintillator array, and converts the light into an electrical signal. In relation to the event, an arithmetic processing device 18 detects a peak value in a voltage waveform of the electrical signal from the photomultiplier tube 14, and an integrated charge quantity, and identifies the scintillator element in the scintillator array to which the electrical signal, resulting from the incidence of radiation onto the scintillator element, is attributable, in accordance with the ratio between the detected peak value and the integrated electric charge quantity.
特許請求の範囲(英語) [claim1]
1. The scintillator arrangement to which the plural scintillator elements where damping time constant of the radiation which it occurs radiation with the event which incidence is done differs mutually are arranged and,
The light which is output from the plural scintillator elements of the aforementioned scintillator arrangement the photoelectric transmitter which absorbs light, converts to the electric information and,
In order to specify whether in which scintillator element where the particular electric information is in the midst of the aforementioned scintillator arranging according to the ratio of peak value and integral calculus electric charge quantity which detect peak value and integral calculus electric charge quantity in the voltage waveform of the electric information from the aforementioned photoelectric transmitter, concerning the aforementioned event detect, radiation the electric information which originates in incidence doing, the arithmetic processing unit which is formed and,
It includes,
Scintillation optical detection device.
[claim2]
2. Being the scintillation optical detection device of statement in claim 1,
As for the aforementioned scintillator arrangement, the plural scintillator elements are arranged by 1 lines, light from the plural scintillator elements is output from the scintillator element of one end in the particular 1 lines,
Scintillation optical detection device.
[claim3]
3. Being the scintillation optical detection device of statement in claim 2,
Plural it arranges the aforementioned scintillator arrangement,
The aforementioned photoelectric transmitter, light from individual scintillator arrangement absorbing light separately, outputs the separate electric information,
As for the aforementioned arithmetic processing unit, according to the ratio of peak value and integral calculus electric charge quantity in the voltage waveform of each electric information, it specifies whether each electric information in which scintillator element of which scintillator arrangement radiation the electric information which originates in incidence doing,
Scintillation optical detection device.
[claim4]
4. Either of the claim 1-3 being the scintillation optical detection device of statement in one,
As for the plural scintillator elements where the aforementioned damping time constant differs mutually, density of the activation material each other includes those which differ,
Scintillation optical detection device.
[claim5]
5. Either of the claim 1-3 being the scintillation optical detection device of statement in one,
The plural scintillator elements where the aforementioned damping time constant differs mutually include those where the material which forms the scintillator element differs mutually,
Scintillation optical detection device.
[claim6]
6. Either of the claim 1-3 being the scintillation optical detection device of statement in one,
The plural scintillator elements where the aforementioned damping time constant differs mutually, as density of the activation material differs mutually, include those where the material which forms the scintillator element differs,
Scintillation optical detection device.
[claim7]
7. Being the scintillation optical detection device of statement in claim 5,
As for the aforementioned arithmetic processing unit, output energy and peak value and integral calculus electric charge quantity in the voltage waveform of each electric information concerning the plural scintillator elements where the aforementioned material differs making use of the difference of ratio, the crosstalk event is removed,
Scintillation optical detection device.
[claim8]
8. Being the scintillation optical detection device of statement in claim 6,
The aforementioned arithmetic processing unit making use of the difference of output energy concerning the plural scintillator elements where the aforementioned material differs, removes the crosstalk event,
Scintillation optical detection device.
[claim9]
9. The scintillator arrangement to which the plural scintillator elements where damping time constant of the radiation which it occurs radiation with the event which incidence is done differs mutually are arranged plural the scintillator arrangement group which is arranged in the position where it differs spatially and,
The light which is output respectively from the plural scintillator elements of the aforementioned scintillator arrangement of the aforementioned scintillator group the photoelectric transmitter which absorbs light, converts to the electric information in every scintillator element and,
As it specifies whether in which scintillator element where the particular electric information is in the midst of the aforementioned scintillator arranging according to the ratio of peak value and integral calculus electric charge quantity in the voltage waveform of the electric information from the aforementioned photoelectric transmitter concerning the aforementioned event, radiation the electric information which originates in incidence doing, incidence of radiation the plural scintillator elements which are done as by the fact that it specifies, detected the spatial position of the emission radiation source, the arithmetic processing unit which is formed and,
It includes,
Radiation detector assembly.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • HOKKAIDO UNIVERSITY
  • 発明者(英語)
  • ISHIKAWA MASAYORI
  • OGAWARA RYO
国際特許分類(IPC)
指定国 (WO201738953)
National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KN KP KR KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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