SE435764B - Sett att vid en scintillationsreknare bestemma ett slumpkoincidensreknetal, samt apparat avsedd att anvendas for settet - Google Patents
Sett att vid en scintillationsreknare bestemma ett slumpkoincidensreknetal, samt apparat avsedd att anvendas for settetInfo
- Publication number
- SE435764B SE435764B SE7900767A SE7900767A SE435764B SE 435764 B SE435764 B SE 435764B SE 7900767 A SE7900767 A SE 7900767A SE 7900767 A SE7900767 A SE 7900767A SE 435764 B SE435764 B SE 435764B
- Authority
- SE
- Sweden
- Prior art keywords
- pulses
- coincidence
- random
- count
- coincidences
- Prior art date
Links
- 230000003111 delayed effect Effects 0.000 claims description 47
- 238000000034 method Methods 0.000 claims description 26
- 238000001514 detection method Methods 0.000 claims description 18
- 238000012937 correction Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 230000008030 elimination Effects 0.000 claims description 3
- 238000003379 elimination reaction Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000005258 radioactive decay Effects 0.000 claims 2
- 239000000523 sample Substances 0.000 description 16
- 239000007788 liquid Substances 0.000 description 7
- 230000005855 radiation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- 238000005415 bioluminescence Methods 0.000 description 2
- 230000029918 bioluminescence Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005424 photoluminescence Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
- G01T1/17—Circuit arrangements not adapted to a particular type of detector
- G01T1/172—Circuit arrangements not adapted to a particular type of detector with coincidence circuit arrangements
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Radiation (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/873,318 US4181855A (en) | 1978-01-30 | 1978-01-30 | Method and apparatus for determining random coincidence count rate in a scintillation counter utilizing the coincidence technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7900767L SE7900767L (sv) | 1979-07-31 |
| SE435764B true SE435764B (sv) | 1984-10-15 |
Family
ID=25361395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7900767A SE435764B (sv) | 1978-01-30 | 1979-01-29 | Sett att vid en scintillationsreknare bestemma ett slumpkoincidensreknetal, samt apparat avsedd att anvendas for settet |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4181855A (xx) |
| BE (1) | BE873758A (xx) |
| CH (1) | CH631551A5 (xx) |
| DE (1) | DE2903050A1 (xx) |
| FR (1) | FR2415818A1 (xx) |
| GB (1) | GB2013880B (xx) |
| NL (1) | NL7900685A (xx) |
| SE (1) | SE435764B (xx) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2447558A1 (fr) * | 1979-01-26 | 1980-08-22 | Commissariat Energie Atomique | Dispositif de visualisation d'un corps par detection du rayonnement d'un traceur contenu dans ce corps |
| US4284890A (en) * | 1979-08-27 | 1981-08-18 | Montreal Neurological Institute | Coincidence analysis circuit for positron annihilation imaging device |
| JPS5666776A (en) * | 1979-10-18 | 1981-06-05 | Ortec Inc | Tomograph |
| US4421986A (en) * | 1980-11-21 | 1983-12-20 | The United States Of America As Represented By The Department Of Health And Human Services | Nuclear pulse discriminator |
| US4395635A (en) * | 1981-01-26 | 1983-07-26 | The United States Of America As Represented By The Department Of Health And Human Services | Gamma ray coincidence analysis system |
| US4408297A (en) * | 1981-02-11 | 1983-10-04 | Theodosiou George E | Reduction in maximum time uncertainty of paired time signals |
| US4418282A (en) * | 1981-06-29 | 1983-11-29 | Beckman Instruments, Inc. | Method and apparatus for determining random coincidence count rate in a scintillation counter utilizing the coincidence technique |
| US4559597A (en) * | 1982-07-07 | 1985-12-17 | Clayton Foundation For Research | Three-dimensional time-of-flight positron emission camera system |
| SE445495B (sv) * | 1984-11-09 | 1986-06-23 | Wallac Oy | Vetskescintillationsreknare |
| US5146093A (en) * | 1985-04-08 | 1992-09-08 | Packard Instrument Company, Inc. | Liquid scintillation measurement system with active guard shield |
| US4651006A (en) * | 1985-04-08 | 1987-03-17 | Packard Instrument Company, Inc. | Reduced background scintillation counting |
| US4748348A (en) * | 1986-12-29 | 1988-05-31 | Tektronix, Inc. | Multi-level pattern detector for a single signal |
| CA1280224C (en) * | 1987-08-27 | 1991-02-12 | Daniel Gagnon | Method and circuit for processing narrow band signals located in a wide band having disturbance |
| FI902332A (fi) * | 1990-05-10 | 1991-11-11 | Wallac Oy | Foerfarande foer observering, registrering och analysering av scintillationsfoereteelser vid scintillationsraekning. |
| US5834779A (en) * | 1997-05-30 | 1998-11-10 | Adac Laboratories | Method and apparatus for performing correction for random coincidences in a medical imaging system |
| US5998793A (en) * | 1998-04-17 | 1999-12-07 | Adac Laboratories | Method and apparatus for correcting for random coincidences in a nuclear medicine imaging system |
| US6100531A (en) * | 1998-04-17 | 2000-08-08 | Adac Laboratories | Dual-purpose radiation transmission source for nuclear medicine imaging system |
| US5999588A (en) * | 1998-04-17 | 1999-12-07 | Adac Laboratories | Deadtime correction in a nuclear medicine imaging system |
| US6160259A (en) * | 1998-10-23 | 2000-12-12 | Adac Laboratories | Channel-specific control of pulse integration in a gamma camera system in response to pulse pile-up |
| US6291825B1 (en) | 1998-10-23 | 2001-09-18 | Adac Laboratories | Method and apparatus for performing pulse pile-up corrections in a gamma camera system |
| US6169285B1 (en) | 1998-10-23 | 2001-01-02 | Adac Laboratories | Radiation-based imaging system employing virtual light-responsive elements |
| US6198104B1 (en) | 1998-10-23 | 2001-03-06 | Adac Laboratories | Randoms correction using artificial trigger pulses in a gamma camera system |
| US6294788B1 (en) * | 1999-08-18 | 2001-09-25 | Marconi Medical Systems, Inc. | Randoms correction in positron imaging |
| CN101542316B (zh) * | 2006-11-30 | 2013-03-27 | 皇家飞利浦电子股份有限公司 | 利用相关的光子数和能量测量的谱计算机断层摄影 |
| US20090039270A1 (en) * | 2007-08-08 | 2009-02-12 | Cabral Jr Cyril | Large-area alpha-particle detector and method for use |
| US8543356B2 (en) * | 2008-01-24 | 2013-09-24 | National Institute Of Standards And Technology | Low cost multi-channel data acquisition system |
| CN103559391B (zh) * | 2013-10-23 | 2016-10-05 | 沈阳东软医疗系统有限公司 | 判定随机符合事件和判定真符合事件的方法及装置 |
| JP6294929B1 (ja) * | 2016-09-27 | 2018-03-14 | 株式会社日立製作所 | 放射線測定装置 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3725657A (en) * | 1969-01-21 | 1973-04-03 | Nuclear Chicago Corp | Method and apparatus for determining efficiency in a liquid scintillation counting system |
| US3772512A (en) * | 1971-07-02 | 1973-11-13 | Searle & Co | Liquid scintillation coincidence detector |
| FR2331797A1 (fr) * | 1975-11-17 | 1977-06-10 | Intertechnique Sa | Perfectionnements aux procedes et dispositifs de comptage, notamment de comptage a scintillation liquide |
| US4071761A (en) * | 1976-06-07 | 1978-01-31 | Beckman Instruments, Inc. | Method for determining random coincidence count rate in a scintillation counter utilizing the coincidence technique |
-
1978
- 1978-01-30 US US05/873,318 patent/US4181855A/en not_active Expired - Lifetime
-
1979
- 1979-01-18 GB GB7901802A patent/GB2013880B/en not_active Expired
- 1979-01-26 DE DE19792903050 patent/DE2903050A1/de not_active Ceased
- 1979-01-29 NL NL7900685A patent/NL7900685A/xx not_active Application Discontinuation
- 1979-01-29 CH CH85479A patent/CH631551A5/fr not_active IP Right Cessation
- 1979-01-29 SE SE7900767A patent/SE435764B/sv not_active IP Right Cessation
- 1979-01-29 FR FR7902190A patent/FR2415818A1/fr active Granted
- 1979-01-29 BE BE193117A patent/BE873758A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2415818B1 (xx) | 1984-06-29 |
| BE873758A (fr) | 1979-05-16 |
| DE2903050A1 (de) | 1979-08-02 |
| GB2013880A (en) | 1979-08-15 |
| NL7900685A (nl) | 1979-08-01 |
| FR2415818A1 (fr) | 1979-08-24 |
| US4181855A (en) | 1980-01-01 |
| GB2013880B (en) | 1982-09-02 |
| CH631551A5 (fr) | 1982-08-13 |
| SE7900767L (sv) | 1979-07-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
Ref document number: 7900767-0 Effective date: 19901211 Format of ref document f/p: F |