GB2002988A - Radiography - Google Patents
RadiographyInfo
- Publication number
- GB2002988A GB2002988A GB7832670A GB7832670A GB2002988A GB 2002988 A GB2002988 A GB 2002988A GB 7832670 A GB7832670 A GB 7832670A GB 7832670 A GB7832670 A GB 7832670A GB 2002988 A GB2002988 A GB 2002988A
- Authority
- GB
- United Kingdom
- Prior art keywords
- detectors
- deflection
- data
- focussed
- overlap
- 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.)
- Granted
Links
- 238000002601 radiography Methods 0.000 title 1
- 230000005855 radiation Effects 0.000 abstract 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000009795 derivation Methods 0.000 abstract 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
- A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/4021—Arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot
- A61B6/4028—Arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot resulting in acquisition of views from substantially different positions, e.g. EBCT
-
- 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
- A61B6/52—Devices using data or image processing specially adapted for radiation diagnosis
- A61B6/5205—Devices using data or image processing specially adapted for radiation diagnosis involving processing of raw data to produce diagnostic data
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Pathology (AREA)
- Heart & Thoracic Surgery (AREA)
- High Energy & Nuclear Physics (AREA)
- Physics & Mathematics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Veterinary Medicine (AREA)
- Radiology & Medical Imaging (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Pulmonology (AREA)
- Theoretical Computer Science (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
This application describes a rotation-only CT scanner with additional source deflection; the deflection and the rotation being so related as to permit the derivation of absorption data in groups focussed on respective "pivot points" outside the detector locus. Data derived from different detectors, but focussed on the same pivot point, relate to groups of paths, some of which overlap, and the overlap is used to compare the performances of different detectors. To reduce data handling, data provided by adjacent detectors can be combined. Additional source deflection is achieved using a scanning X-ray tube whereby the source, viewed from "pivot point" P in the stationary reference frame, moves from F(a) to R(b) then, after flyback, from F(c) to R(d) etc. During these periods, respective detectors Dr, Dr + x receive radiation whose direction intersects point P, and since both detectors receive radiation along similar paths in area 39, the outputs from the two detectors can be compared and averaged. <IMAGE>
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7832670A GB2002988B (en) | 1977-08-18 | 1978-08-08 | Radiography |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3467977 | 1977-08-18 | ||
| GB7832670A GB2002988B (en) | 1977-08-18 | 1978-08-08 | Radiography |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2002988A true GB2002988A (en) | 1979-02-28 |
| GB2002988B GB2002988B (en) | 1982-04-07 |
Family
ID=26262394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7832670A Expired GB2002988B (en) | 1977-08-18 | 1978-08-08 | Radiography |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2002988B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0010885A1 (en) * | 1978-10-24 | 1980-05-14 | EMI Limited | Computerized tomographic apparatus |
| FR2549711A1 (en) * | 1983-07-28 | 1985-02-01 | Elscint Ltd | Medical rotational tomograph body scanner |
| EP0365084A1 (en) * | 1988-10-18 | 1990-04-25 | Koninklijke Philips Electronics N.V. | Computer tomography scanner with a tomosynthetic scanogram |
-
1978
- 1978-08-08 GB GB7832670A patent/GB2002988B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0010885A1 (en) * | 1978-10-24 | 1980-05-14 | EMI Limited | Computerized tomographic apparatus |
| FR2549711A1 (en) * | 1983-07-28 | 1985-02-01 | Elscint Ltd | Medical rotational tomograph body scanner |
| EP0365084A1 (en) * | 1988-10-18 | 1990-04-25 | Koninklijke Philips Electronics N.V. | Computer tomography scanner with a tomosynthetic scanogram |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2002988B (en) | 1982-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES474765A1 (en) | Reduced dose CT scanning | |
| JPS5481095A (en) | Computer tomography device | |
| FR2293063A1 (en) | IMAGE SCAN THERMAL RADIATION DETECTOR | |
| IL102102A0 (en) | Acquisition of tomographic images with a gamma camera having two detectors with sighting center distinct form center of rotation | |
| US4219733A (en) | X-Ray diagnostic apparatus producing transverse layer images | |
| GB1532502A (en) | Dental x-ray apparatus | |
| JPH0123444Y2 (en) | ||
| GB2002988A (en) | Radiography | |
| EP0140695A3 (en) | Digital radiography device | |
| GB1536448A (en) | Radiography | |
| GB1513337A (en) | Mammography | |
| JPS53128994A (en) | Ct scanner | |
| AU2262192A (en) | Method and apparatus for computing tomographic and panoramic scans | |
| GB2005514A (en) | Method of and apparatus for examining objects by the use of radiation | |
| JPS5492192A (en) | Tomographic equipment | |
| JPS52104892A (en) | Body axis tomography apparatus using x-ray | |
| JPS5456889A (en) | Xxray inspector | |
| JPS58163341A (en) | X-ray diagnostic apparatus | |
| JPS53114378A (en) | Tomographic pickup unit by radiation | |
| JPS5342696A (en) | Ct scanner | |
| GB2010044A (en) | Apparatus for axial transverse tomography | |
| JPS5468193A (en) | Linear scan-type ct unit | |
| SU959758A1 (en) | Guiding device to panoramic tomograph | |
| JPS5234690A (en) | Method to obatain x-ray body axis tomogramic image | |
| JPS5835209Y2 (en) | tomography device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19940808 |