JPH01118393U - - Google Patents

Info

Publication number
JPH01118393U
JPH01118393U JP1147988U JP1147988U JPH01118393U JP H01118393 U JPH01118393 U JP H01118393U JP 1147988 U JP1147988 U JP 1147988U JP 1147988 U JP1147988 U JP 1147988U JP H01118393 U JPH01118393 U JP H01118393U
Authority
JP
Japan
Prior art keywords
pulse height
height discriminator
radiation
counter
discrimination level
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1147988U
Other languages
Japanese (ja)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1147988U priority Critical patent/JPH01118393U/ja
Publication of JPH01118393U publication Critical patent/JPH01118393U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案実施例の構成を示すブロツク図
、第２図はその比例増幅器３の出力に現われるパ
ルスの波高スペクトルの説明図、第３図および第
４図はそれぞれ本考案の応用例の説明図、第５図
および第６図はそれぞれピークパイルアツプの有
無における検出パルスの波形および波高スペクト
ルの説明図、第７図は真の計数率と弁別レベルＶ
１で弁別したときの数え落しの割合との関係の計
算結果を示すグラフである。 １……放射線検出器、２……前置増幅器、３…
…比例増幅器、４……第１の波高弁別器、５……
第１のカウンタ、６……第２の波高弁別器、７…
…第２のカウンタ、８……加算器。 Fig. 1 is a block diagram showing the configuration of an embodiment of the present invention, Fig. 2 is an explanatory diagram of the pulse height spectrum of the pulse appearing at the output of the proportional amplifier 3, and Figs. 3 and 4 are respective examples of application of the present invention. Explanatory diagrams, Figures 5 and 6 are explanatory diagrams of the waveform and wave height spectrum of the detected pulse in the presence and absence of peak pile-up, respectively, and Figure 7 is the true counting rate and discrimination level V
1 is a graph showing the calculation result of the relationship with the rate of omitted counting when discrimination is performed using 1. 1...Radiation detector, 2...Preamplifier, 3...
...Proportional amplifier, 4...First pulse height discriminator, 5...
First counter, 6... Second pulse height discriminator, 7...
...second counter, 8...adder.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 放射線検出器からの所定波高値以上の出力パル
スを計数することによつて、当該検出器への入射
放射線線量を計測する装置において、上記波高値
に対応する第１の弁別レベルが設定される第１の
波高弁別器と、その第１の波高弁別器の出力を計
数する第１のカウンタと、上記第１の弁別レベル
より高い第２の弁別レベルが設定される第２の波
高弁別器と、その第２の波高弁別器の出力を計数
する第２のカウンタと、上記第１と第２のカウン
タの出力を加算する加算器を備え、上記放射線検
出器による検出パルス出力が上記第１および第２
の波高弁別回路の双方に入力されるよう構成され
ていることを特徴とする放射線計測装置。 In a device that measures the incident radiation dose to a radiation detector by counting output pulses of a predetermined peak value or more from a radiation detector, a first discrimination level corresponding to the peak value is set. a first pulse height discriminator; a first counter that counts the output of the first pulse height discriminator; and a second pulse height discriminator having a second discrimination level higher than the first discrimination level; a second counter that counts the output of the second pulse height discriminator; and an adder that adds the outputs of the first and second counters; 2
A radiation measuring device characterized in that the radiation measuring device is configured to be inputted to both of the wave height discrimination circuit.
JP1147988U 1988-01-29 1988-01-29 Pending JPH01118393U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1147988U JPH01118393U (en) 1988-01-29 1988-01-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1147988U JPH01118393U (en) 1988-01-29 1988-01-29

Publications (1)

Publication Number Publication Date
JPH01118393U true JPH01118393U (en) 1989-08-10

Family

ID=31220071

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1147988U Pending JPH01118393U (en) 1988-01-29 1988-01-29

Country Status (1)

Country Link
JP (1) JPH01118393U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013516610A (en) * 2009-12-30 2013-05-13 ゼネラル・エレクトリック・カンパニイ Method and apparatus for acquiring radiation data
JP2014115272A (en) * 2012-11-15 2014-06-26 Mitsubishi Heavy Ind Ltd Radioactivity measuring apparatus
JP2014197015A (en) * 2008-12-01 2014-10-16 独立行政法人放射線医学総合研究所 RADIOACTIVITY ABSOLUTE MEASURING METHOD OF POSITIVE ELECTRON DECAY NUCLIDE RELEASING γ RAY, DETECTION EFFICIENCY DETERMINATION METHOD OF RADIATION DETECTOR AGGREGATE, AND CALIBRATION METHOD OF RADIATION MEASURING APPARATUS
JP2015506463A (en) * 2011-12-21 2015-03-02 コーニンクレッカ フィリップス エヌ ヴェ Detection device to detect photons
WO2015146595A1 (en) * 2014-03-24 2015-10-01 株式会社東芝 Radiation-measuring device and radiation-measuring program
JP2015224894A (en) * 2014-05-26 2015-12-14 日立アロカメディカル株式会社 Radiation measuring apparatus

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014197015A (en) * 2008-12-01 2014-10-16 独立行政法人放射線医学総合研究所 RADIOACTIVITY ABSOLUTE MEASURING METHOD OF POSITIVE ELECTRON DECAY NUCLIDE RELEASING γ RAY, DETECTION EFFICIENCY DETERMINATION METHOD OF RADIATION DETECTOR AGGREGATE, AND CALIBRATION METHOD OF RADIATION MEASURING APPARATUS
JP2013516610A (en) * 2009-12-30 2013-05-13 ゼネラル・エレクトリック・カンパニイ Method and apparatus for acquiring radiation data
US9000385B2 (en) 2009-12-30 2015-04-07 General Electric Company Method and apparatus for acquiring radiation data
JP2015506463A (en) * 2011-12-21 2015-03-02 コーニンクレッカ フィリップス エヌ ヴェ Detection device to detect photons
JP2014115272A (en) * 2012-11-15 2014-06-26 Mitsubishi Heavy Ind Ltd Radioactivity measuring apparatus
WO2015146595A1 (en) * 2014-03-24 2015-10-01 株式会社東芝 Radiation-measuring device and radiation-measuring program
JP2015184119A (en) * 2014-03-24 2015-10-22 株式会社東芝 Device and program for measuring radioactivity
US10281592B2 (en) 2014-03-24 2019-05-07 Canon Medical Systems Corporation Radiation measuring apparatus, computer program product, and radiation computed tomography apparatus
JP2015224894A (en) * 2014-05-26 2015-12-14 日立アロカメディカル株式会社 Radiation measuring apparatus

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