GB1577961A - Measuring absorption of radiation - Google Patents
Measuring absorption of radiation Download PDFInfo
- Publication number
- GB1577961A GB1577961A GB3833/77A GB383377A GB1577961A GB 1577961 A GB1577961 A GB 1577961A GB 3833/77 A GB3833/77 A GB 3833/77A GB 383377 A GB383377 A GB 383377A GB 1577961 A GB1577961 A GB 1577961A
- Authority
- GB
- United Kingdom
- Prior art keywords
- radiator
- shield
- angle
- fan
- radiation
- 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 title claims description 60
- 238000010521 absorption reaction Methods 0.000 title claims description 20
- 238000005259 measurement Methods 0.000 claims description 70
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000009102 absorption Effects 0.000 description 17
- 230000008859 change Effects 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012432 intermediate storage Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 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]
-
- 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
- A61B6/06—Diaphragms
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Radiology & Medical Imaging (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- High Energy & Nuclear Physics (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Public Health (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Theoretical Computer Science (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Measurement Of Radiation (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2604020A DE2604020C3 (de) | 1976-02-03 | 1976-02-03 | Vorrichtung zur Ermittlung der Absorption einer Strahlung in einer Ebene eines Körpers mit einer einen keilförmigen Strahlungsbereich ausblendenden Abblendvorrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1577961A true GB1577961A (en) | 1980-10-29 |
Family
ID=5968912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3833/77A Expired GB1577961A (en) | 1976-02-03 | 1977-01-31 | Measuring absorption of radiation |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4097747A (https=) |
| JP (1) | JPS5829091B2 (https=) |
| AU (1) | AU506027B2 (https=) |
| BE (1) | BE850985A (https=) |
| BR (1) | BR7700590A (https=) |
| CA (1) | CA1089118A (https=) |
| DE (1) | DE2604020C3 (https=) |
| ES (1) | ES455525A1 (https=) |
| FR (1) | FR2340555A1 (https=) |
| GB (1) | GB1577961A (https=) |
| IT (1) | IT1105543B (https=) |
| NL (1) | NL7700970A (https=) |
| SE (1) | SE7700959L (https=) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2609925C2 (de) * | 1976-03-10 | 1982-06-09 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Anordnung zur Ermittlung der Verteilung der Absorption eines Körpers |
| US4132895A (en) * | 1976-08-28 | 1979-01-02 | Emi Limited | Radiography |
| US4190773A (en) * | 1977-07-01 | 1980-02-26 | Braden Arthur B | Shutter for rotating source CT scanner |
| US4266135A (en) * | 1977-07-01 | 1981-05-05 | Ohio Nuclear, Inc. | Method of determining collimator aperture efficiency and apparatus with an efficient collimator aperture size |
| US4200800A (en) * | 1977-11-03 | 1980-04-29 | American Science & Engineering, Inc. | Reduced dose CT scanning |
| DE2756659A1 (de) * | 1977-12-19 | 1979-06-21 | Philips Patentverwaltung | Anordnung zur bestimmung der absorptionsverteilung |
| DE2939146A1 (de) * | 1979-09-27 | 1981-04-16 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Verfahren zur untersuchung eines koerpers mit durchdringender strahlung |
| FR2604082B1 (fr) * | 1986-09-23 | 1994-06-03 | Thomson Cgr | Dispositif de mammographie |
| DE102013013552B3 (de) | 2013-08-14 | 2014-07-03 | Ziehm Imaging Gmbh | Verfahren zur Aufnahme eines in der Zentralschicht vollständigen Projektionsdatensatzes zur CT- Rekonstruktion unter Verwendung eines C-Bogen-Röntgengeräts mit einem begrenzten Rotationsbereich |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3866047A (en) * | 1968-08-23 | 1975-02-11 | Emi Ltd | Penetrating radiation examining apparatus having a scanning collimator |
| US3922552A (en) * | 1974-02-15 | 1975-11-25 | Robert S Ledley | Diagnostic X-ray systems |
| GB1529799A (en) * | 1974-11-13 | 1978-10-25 | Emi Ltd | Radiography |
| US3965353A (en) * | 1974-12-06 | 1976-06-22 | Albert Macovski | Cross-sectional X-ray emission imaging system |
-
1976
- 1976-02-03 DE DE2604020A patent/DE2604020C3/de not_active Expired
-
1977
- 1977-01-21 US US05/761,452 patent/US4097747A/en not_active Expired - Lifetime
- 1977-01-31 CA CA270,694A patent/CA1089118A/en not_active Expired
- 1977-01-31 SE SE7700959A patent/SE7700959L/xx unknown
- 1977-01-31 GB GB3833/77A patent/GB1577961A/en not_active Expired
- 1977-01-31 IT IT47862/77A patent/IT1105543B/it active
- 1977-01-31 NL NL7700970A patent/NL7700970A/xx not_active Application Discontinuation
- 1977-01-31 JP JP52008851A patent/JPS5829091B2/ja not_active Expired
- 1977-01-31 BR BR7700590A patent/BR7700590A/pt unknown
- 1977-02-01 ES ES455525A patent/ES455525A1/es not_active Expired
- 1977-02-01 AU AU21819/77A patent/AU506027B2/en not_active Expired
- 1977-02-01 BE BE174574A patent/BE850985A/xx unknown
- 1977-02-02 FR FR7702880A patent/FR2340555A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| BR7700590A (pt) | 1977-10-04 |
| AU506027B2 (en) | 1979-12-13 |
| AU2181977A (en) | 1978-08-10 |
| IT1105543B (it) | 1985-11-04 |
| JPS5294788A (en) | 1977-08-09 |
| FR2340555B1 (https=) | 1982-01-15 |
| BE850985A (fr) | 1977-08-01 |
| DE2604020B2 (de) | 1980-04-10 |
| ES455525A1 (es) | 1978-11-16 |
| CA1089118A (en) | 1980-11-04 |
| FR2340555A1 (fr) | 1977-09-02 |
| NL7700970A (nl) | 1977-08-05 |
| US4097747A (en) | 1978-06-27 |
| DE2604020A1 (de) | 1977-08-04 |
| JPS5829091B2 (ja) | 1983-06-20 |
| SE7700959L (sv) | 1977-08-04 |
| DE2604020C3 (de) | 1980-12-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |