CA1073560A - Derandomisateur de donnees et methode d'utilisation dans les systemes de formation d'images par radiations - Google Patents
Derandomisateur de donnees et methode d'utilisation dans les systemes de formation d'images par radiationsInfo
- Publication number
- CA1073560A CA1073560A CA325,529A CA325529A CA1073560A CA 1073560 A CA1073560 A CA 1073560A CA 325529 A CA325529 A CA 325529A CA 1073560 A CA1073560 A CA 1073560A
- Authority
- CA
- Canada
- Prior art keywords
- pulse
- data
- input
- peak
- signal
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000005855 radiation Effects 0.000 title abstract description 24
- 238000003384 imaging method Methods 0.000 title description 10
- 238000007599 discharging Methods 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 39
- 230000000903 blocking effect Effects 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000009499 grossing Methods 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- 230000005669 field effect Effects 0.000 claims description 2
- QHGVXILFMXYDRS-UHFFFAOYSA-N pyraclofos Chemical compound C1=C(OP(=O)(OCC)SCCC)C=NN1C1=CC=C(Cl)C=C1 QHGVXILFMXYDRS-UHFFFAOYSA-N 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 37
- 230000009977 dual effect Effects 0.000 abstract description 6
- 230000007246 mechanism Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 4
- 238000012633 nuclear imaging Methods 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- 235000021251 pulses Nutrition 0.000 description 277
- 239000000523 sample Substances 0.000 description 79
- 108091006146 Channels Proteins 0.000 description 24
- 230000004044 response Effects 0.000 description 13
- 239000013078 crystal Substances 0.000 description 12
- 230000000875 corresponding effect Effects 0.000 description 11
- 230000003111 delayed effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 238000007493 shaping process Methods 0.000 description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 3
- 238000009877 rendering Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 229920000136 polysorbate Polymers 0.000 description 2
- PNDPGZBMCMUPRI-HVTJNCQCSA-N 10043-66-0 Chemical compound [131I][131I] PNDPGZBMCMUPRI-HVTJNCQCSA-N 0.000 description 1
- 241000479907 Devia <beetle> Species 0.000 description 1
- 241001163743 Perlodes Species 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 229940000425 combination drug Drugs 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000009131 signaling function Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 210000000352 storage cell Anatomy 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- -1 thallium-activated sodium iodide Chemical class 0.000 description 1
- 210000001685 thyroid gland Anatomy 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Measurement Of Radiation (AREA)
- Nuclear Medicine (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA325,529A CA1073560A (fr) | 1974-06-11 | 1979-04-11 | Derandomisateur de donnees et methode d'utilisation dans les systemes de formation d'images par radiations |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US47820174A | 1974-06-11 | 1974-06-11 | |
| US05/576,309 US4024398A (en) | 1974-06-11 | 1975-05-12 | Data derandomizer and method of operation for radiation imaging detection systems |
| CA282,852A CA1091281A (fr) | 1976-07-16 | 1977-07-15 | Four de fusion |
| CA325,529A CA1073560A (fr) | 1974-06-11 | 1979-04-11 | Derandomisateur de donnees et methode d'utilisation dans les systemes de formation d'images par radiations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1073560A true CA1073560A (fr) | 1980-03-11 |
Family
ID=27426000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA325,529A Expired CA1073560A (fr) | 1974-06-11 | 1979-04-11 | Derandomisateur de donnees et methode d'utilisation dans les systemes de formation d'images par radiations |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1073560A (fr) |
-
1979
- 1979-04-11 CA CA325,529A patent/CA1073560A/fr not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4421986A (en) | Nuclear pulse discriminator | |
| US4593198A (en) | Pulse pile-up discrimination system | |
| US6858847B1 (en) | Circuit and method for energy discrimination of coincident events in coincidence detecting gamma camera system | |
| GB1387406A (en) | Feature selection in image analysis | |
| GB1213478A (en) | Indicating or detecting apparatus for nuclear radiation such as gamma rays | |
| US4058728A (en) | Correction of data loss in gamma ray scintillation cameras | |
| CA1067214A (fr) | Appareil de mesure de radiations utilisant un echantillonneur d'impulsions a frequence variable | |
| US4455616A (en) | Fast gamma camera | |
| US4024398A (en) | Data derandomizer and method of operation for radiation imaging detection systems | |
| US4031392A (en) | Method and devices for counting events, particularly radioactive disintegration events | |
| US5378893A (en) | Radiation event qualifier for positron emission tomography | |
| US3753109A (en) | Peak detector | |
| US4100413A (en) | Radiation imaging apparatus with improved accuracy | |
| US4398101A (en) | Four input coincidence detector | |
| US3904530A (en) | Scintillation camera | |
| US4051373A (en) | Delay line clipping in a scintillation camera system | |
| US4629895A (en) | Method for processing the pulses supplied by a gamma camera and a gamma camera employing this method | |
| US3532927A (en) | Scintillation detector indicating system | |
| US4837437A (en) | Method and circuit arrangement for reducing the background count in radioactivity measurements with a coincidence-anticoincidence evaluation | |
| US3752988A (en) | Circuit for reducing pulse pile-up in pulse detection systems | |
| US3148353A (en) | Timing circuit | |
| Fegan et al. | Fast large aperture camera and data acquisition system with applications in astrophysics, particle physics and nuclear medicine | |
| US4468744A (en) | Scintillation camera | |
| US4035776A (en) | Data derandomizer for radiation imaging detection systems and method of operation | |
| US3275826A (en) | Signal processing means for detected pulse signals |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |