JPS6314983B2 - - Google Patents
Info
- Publication number
- JPS6314983B2 JPS6314983B2 JP7290077A JP7290077A JPS6314983B2 JP S6314983 B2 JPS6314983 B2 JP S6314983B2 JP 7290077 A JP7290077 A JP 7290077A JP 7290077 A JP7290077 A JP 7290077A JP S6314983 B2 JPS6314983 B2 JP S6314983B2
- Authority
- JP
- Japan
- Prior art keywords
- radiation
- data
- convolution
- detector
- function
- 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
- 230000005855 radiation Effects 0.000 claims description 100
- 238000000034 method Methods 0.000 claims description 57
- 230000006870 function Effects 0.000 claims description 50
- 238000004364 calculation method Methods 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 14
- 238000003860 storage Methods 0.000 claims description 9
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000013480 data collection Methods 0.000 description 21
- 238000005259 measurement Methods 0.000 description 20
- 238000010521 absorption reaction Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 11
- 230000008521 reorganization Effects 0.000 description 10
- 239000011159 matrix material Substances 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 6
- 238000001493 electron microscopy Methods 0.000 description 6
- 229910052724 xenon Inorganic materials 0.000 description 6
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000012937 correction Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000010420 art technique Methods 0.000 description 3
- 210000004556 brain Anatomy 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000009206 nuclear medicine Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000003325 tomography Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- GUTLYIVDDKVIGB-OUBTZVSYSA-N Cobalt-60 Chemical compound [60Co] GUTLYIVDDKVIGB-OUBTZVSYSA-N 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 2
- 210000000683 abdominal cavity Anatomy 0.000 description 2
- 210000003484 anatomy Anatomy 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000002178 crystalline material Substances 0.000 description 2
- 238000013075 data extraction Methods 0.000 description 2
- 238000000635 electron micrograph Methods 0.000 description 2
- 210000004185 liver Anatomy 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 238000009659 non-destructive testing Methods 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- MARUHZGHZWCEQU-UHFFFAOYSA-N 5-phenyl-2h-tetrazole Chemical compound C1=CC=CC=C1C1=NNN=N1 MARUHZGHZWCEQU-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910052695 Americium Inorganic materials 0.000 description 1
- 206010002329 Aneurysm Diseases 0.000 description 1
- 208000032843 Hemorrhage Diseases 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- LXQXZNRPTYVCNG-UHFFFAOYSA-N americium atom Chemical compound [Am] LXQXZNRPTYVCNG-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 229940044173 iodine-125 Drugs 0.000 description 1
- ZCYVEMRRCGMTRW-YPZZEJLDSA-N iodine-125 Chemical compound [125I] ZCYVEMRRCGMTRW-YPZZEJLDSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000000155 isotopic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229960003671 mercuric iodide Drugs 0.000 description 1
- YFDLHELOZYVNJE-UHFFFAOYSA-L mercury diiodide Chemical compound I[Hg]I YFDLHELOZYVNJE-UHFFFAOYSA-L 0.000 description 1
- 238000000386 microscopy Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008855 peristalsis Effects 0.000 description 1
- 238000005293 physical law Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 229910052704 radon Inorganic materials 0.000 description 1
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 235000009518 sodium iodide Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 241001515965 unidentified phage Species 0.000 description 1
- 230000002861 ventricular Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/032—Transmission computed tomography [CT]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/003—Reconstruction from projections, e.g. tomography
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/003—Reconstruction from projections, e.g. tomography
- G06T11/006—Inverse problem, transformation from projection-space into object-space, e.g. transform methods, back-projection, algebraic methods
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2211/00—Image generation
- G06T2211/40—Computed tomography
- G06T2211/421—Filtered back projection [FBP]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Surgery (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- High Energy & Nuclear Physics (AREA)
- Pulmonology (AREA)
- Algebra (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Image Processing (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Image Analysis (AREA)
- Medical Treatment And Welfare Office Work (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/760,492 US4149249A (en) | 1975-12-23 | 1977-01-19 | Apparatus and method for reconstructing data |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5396689A JPS5396689A (en) | 1978-08-24 |
| JPS6314983B2 true JPS6314983B2 (ko) | 1988-04-02 |
Family
ID=25059266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7290077A Granted JPS5396689A (en) | 1977-01-19 | 1977-06-21 | Device for and method of reforming data |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5396689A (ko) |
| CA (1) | CA1111575A (ko) |
| DE (1) | DE2735437A1 (ko) |
| FR (1) | FR2378289A2 (ko) |
| IT (1) | IT1151463B (ko) |
| NL (1) | NL7706873A (ko) |
| SE (1) | SE437763B (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006068397A (ja) * | 2004-09-03 | 2006-03-16 | Canon Inc | 情報処理装置、撮影システム、吸収係数補正方法、及びコンピュータプログラム |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2816462A1 (de) * | 1978-04-15 | 1979-10-25 | Philips Patentverwaltung | Verfahren zur erzeugung verbesserter rekonstruktionsbilder in computer-tomographiegeraeten |
| NL8204086A (nl) * | 1982-10-22 | 1984-05-16 | Philips Nv | Werkwijze en inrichting voor het bepalen van een stralingsverzwakkingsverdeling in een vlak van een lichaam. |
| JPH0441844Y2 (ko) * | 1984-11-02 | 1992-10-01 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3778614A (en) * | 1968-08-23 | 1973-12-11 | Emi Ltd | Method and apparatus for measuring x- or {65 -radiation absorption or transmission at plural angles and analyzing the data |
| JPS51126086A (en) * | 1975-03-18 | 1976-11-02 | Emi Ltd | Radiation photograph camera |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1471531A (en) * | 1973-04-25 | 1977-04-27 | Emi Ltd | Radiography |
| GB1478123A (en) * | 1973-08-18 | 1977-06-29 | Emi Ltd | Tomography |
| GB1526764A (en) * | 1974-11-29 | 1978-09-27 | Univ Leland Stanford Junior | Position sensitive x-ray or ypsilon-ray detector and 3-d tomography using same |
| US4149247A (en) * | 1975-12-23 | 1979-04-10 | Varian Associates, Inc. | Tomographic apparatus and method for reconstructing planar slices from non-absorbed and non-scattered radiation |
-
1977
- 1977-06-21 IT IT24896/77A patent/IT1151463B/it active
- 1977-06-21 NL NL7706873A patent/NL7706873A/xx not_active Application Discontinuation
- 1977-06-21 CA CA281,098A patent/CA1111575A/en not_active Expired
- 1977-06-21 JP JP7290077A patent/JPS5396689A/ja active Granted
- 1977-06-22 SE SE7707270A patent/SE437763B/xx unknown
- 1977-06-22 FR FR7719156A patent/FR2378289A2/fr active Granted
- 1977-08-05 DE DE19772735437 patent/DE2735437A1/de not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3778614A (en) * | 1968-08-23 | 1973-12-11 | Emi Ltd | Method and apparatus for measuring x- or {65 -radiation absorption or transmission at plural angles and analyzing the data |
| JPS51126086A (en) * | 1975-03-18 | 1976-11-02 | Emi Ltd | Radiation photograph camera |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006068397A (ja) * | 2004-09-03 | 2006-03-16 | Canon Inc | 情報処理装置、撮影システム、吸収係数補正方法、及びコンピュータプログラム |
| JP4585815B2 (ja) * | 2004-09-03 | 2010-11-24 | キヤノン株式会社 | 情報処理装置、撮影システム、吸収係数補正方法、及びコンピュータプログラム |
Also Published As
| Publication number | Publication date |
|---|---|
| SE7707270L (sv) | 1978-07-20 |
| JPS5396689A (en) | 1978-08-24 |
| CA1111575A (en) | 1981-10-27 |
| NL7706873A (nl) | 1978-07-21 |
| FR2378289B2 (ko) | 1983-08-19 |
| FR2378289A2 (fr) | 1978-08-18 |
| SE437763B (sv) | 1985-03-18 |
| DE2735437A1 (de) | 1978-07-20 |
| IT1151463B (it) | 1986-12-17 |
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