GB530477A - Method of and apparatus for obtaining cross-sections of bodies by means of x-rays - Google Patents
Method of and apparatus for obtaining cross-sections of bodies by means of x-raysInfo
- Publication number
- GB530477A GB530477A GB18484/39A GB1848439A GB530477A GB 530477 A GB530477 A GB 530477A GB 18484/39 A GB18484/39 A GB 18484/39A GB 1848439 A GB1848439 A GB 1848439A GB 530477 A GB530477 A GB 530477A
- Authority
- GB
- United Kingdom
- Prior art keywords
- image
- film
- section
- images
- cylinder
- 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
- 238000000034 method Methods 0.000 title abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 230000000007 visual effect Effects 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
- A61B6/025—Tomosynthesis
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Engineering & Computer Science (AREA)
- Radiology & Medical Imaging (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- High Energy & Nuclear Physics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
530,477. R÷ntgen-ray kinematograph, and optical projection apparatus. PHILIPS LAMPS, Ltd. June 24, 1939, No. 18484. Convention date, June 27, 1938. [Classes 97 (i) and 98 (i)] To produce an X-ray image of a section of a body, indicated by way of example as a cylinder 3 with a less permeable core 4, a beam of X-rays 10 passing transversely through the body is limited by a slotted diaphragm 5 to a narrow beam in the plane of the section, which forms a narrow strip-like image on a film 7. A number of such partial radiographs are taken from different directions, the X-ray source, screen, and film 7 being rotated round an axis passing through a fixed point in the section without changing the distances between them and the axis of rotation. Each strip-like radiograph is then enlarged laterally to give an image of the kind shown at 9, Fig. 2, and the enlarged images are superposed in the same angular relationship as that which existed between the directions from which they were taken. Fig. 2a shows the effect of combining two images taken from directions with an angle α between them, the result of combining a sufficient number of such images taken from directions extending over an angle of 180 degrees when a substantially parallel beam of rays is employed, or over 360 degrees when the beam is not parallel, being to form the desired image of the section. By continuous relative rotation of the object and the X-ray apparatus a band composed of coalescing strip images may be obtained, Fig. 7 showing an apparatus for this purpose, in which an X-ray tube 38 projects an image through a slot diaphragm 40 of a section of an object supported on a rotary platform 42, the image being received on a film mounted on a roller 41 which is rotated in synchronism with the platform 42. To obtain a picture of the cross-section, the developed film is placed on a cylinder 23, Fig. 6, of the same size as the cylinder 41 and is illuminated by a point source of light 25 within it. The beam passing a slit diaphragm 24 is enlarged in a transverse direction by cylindrical lenses 26, 27 and the image is received on a sensitive plate 9 which is rotated in synchronism with the cylinder 23. A composite image is thereby formed on the plate representing a synthesis of the images formed by the projection of every part of the film through the slit. The Specification as open to inspection under Sect. 91 also refers to a similar method for obtaining a visual image in which a mirror or lens system is employed after the cylindrical lens 27 to rotate the image at the same angular speed as that of the cylinder carrying the film. A modification of the apparatus shown in Fig. 7 is also referred to in which, for the purpose of obtaining images of successive sections, the platform 42 is uniformly raised or lowered as well as rotated, and a continuous band of film replaces the cylindrical film on the roller 41. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE530477X | 1938-06-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB530477A true GB530477A (en) | 1940-12-12 |
Family
ID=6554526
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18484/39A Expired GB530477A (en) | 1938-06-27 | 1939-06-24 | Method of and apparatus for obtaining cross-sections of bodies by means of x-rays |
GB30141/39A Expired GB533697A (en) | 1938-06-27 | 1939-11-15 | Improved method of and device for reproducing cross-sections of bodies by means of x-rays |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30141/39A Expired GB533697A (en) | 1938-06-27 | 1939-11-15 | Improved method of and device for reproducing cross-sections of bodies by means of x-rays |
Country Status (4)
Country | Link |
---|---|
US (1) | US2281931A (en) |
DE (2) | DE693374C (en) |
FR (2) | FR856895A (en) |
GB (2) | GB530477A (en) |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2468963A (en) * | 1949-05-03 | Nptthod op | ||
US2437688A (en) * | 1945-01-12 | 1948-03-16 | Miner Inc W H | Apparatus for X-ray photographing tubular steel castings |
US2494740A (en) * | 1948-05-18 | 1950-01-17 | Cormack E Boucher | Film holder |
DE972794C (en) * | 1952-01-15 | 1959-09-24 | Johann Dumer | Device for the radiographic representation of body sections |
US3089031A (en) * | 1956-12-22 | 1963-05-07 | Degussa | Method and apparatus for testing structure of materials by means of roentgen, gamma or corpuscular rays |
US3101407A (en) * | 1959-04-09 | 1963-08-20 | Jr John Daniel Shipman | Fluoroscope system utilizing an image storage tube |
US3187185A (en) * | 1960-12-22 | 1965-06-01 | United States Steel Corp | Apparatus for determining surface contour |
GB1283915A (en) * | 1968-08-23 | 1972-08-02 | Emi Ltd | A method of and apparatus for examination of a body by radiation such as x or gamma radiation |
US4639941A (en) * | 1968-08-23 | 1987-01-27 | Emi Limited | Radiography |
US3671745A (en) * | 1970-11-05 | 1972-06-20 | Photosystems Corp | Three dimensional and/or time sequence x-ray apparatus |
US3766385A (en) * | 1972-04-14 | 1973-10-16 | Konics Inc | Rolling cylinder cassette for electron radiography |
FR2247193B1 (en) * | 1973-10-12 | 1977-03-11 | Dutertre Ets | |
US4034225A (en) * | 1974-01-02 | 1977-07-05 | Pennwalt Corporation, S.S. White Dental Products Division | Film drive mechanism for panoramic radiographic apparatus |
US3908126A (en) * | 1974-01-02 | 1975-09-23 | Pennwalt Corp S S White Dental | X-ray apparatus for providing panoramic radiographic projections |
US4002915A (en) * | 1974-12-09 | 1977-01-11 | Kabushiki Kaisha Morita Seisakusho | Assembly for taking a continuous X-ray picture of the dental arch |
US4769828A (en) * | 1975-02-21 | 1988-09-06 | Emi Limited | Radiography |
FR2304317A1 (en) * | 1975-03-18 | 1976-10-15 | Thomson Csf | NEW SYSTEM OF TRANSVERSE AXIAL TOMOGRAPHY |
GB1558405A (en) * | 1975-06-16 | 1980-01-03 | University Patents Inc | Tomography |
US4081673A (en) * | 1976-04-12 | 1978-03-28 | University Patents, Inc. | Transverse tomography apparatus and method |
NL7605254A (en) * | 1976-05-17 | 1977-11-21 | Optische Ind De Oude Delft Nv | IMAGE CONSTRUCTION. |
NL7605253A (en) * | 1976-05-17 | 1977-11-21 | Optische Ind De Oude Delft Nv | DEVICE FOR TOMOGRAPHY. |
US4293912A (en) * | 1977-09-30 | 1981-10-06 | Technicare Corporation | Tomographic apparatus |
CA1121917A (en) * | 1978-01-23 | 1982-04-13 | Jurgen Heinzerling | X-ray apparatus for computer tomography |
DE2802746C2 (en) * | 1978-01-23 | 1984-09-27 | Philips Patentverwaltung Gmbh, 2000 Hamburg | X-ray machine for computed tomography |
US4316091A (en) * | 1979-11-15 | 1982-02-16 | Emi Limited | CT Scanner |
US4331877A (en) * | 1980-03-21 | 1982-05-25 | University Patents, Inc. | Transverse tomography with optical filtering |
US4329588A (en) * | 1980-03-21 | 1982-05-11 | University Patents, Inc. | Polarization switched optical filtering for transverse tomography |
EP0047780A1 (en) * | 1980-03-21 | 1982-03-24 | University Patents, Inc. | Transverse tomography with optical filtering |
FR2538114A1 (en) * | 1982-12-20 | 1984-06-22 | Commissariat Energie Atomique | FILM TOMOGRAPHY METHOD AND DEVICE |
US5042487A (en) * | 1989-11-13 | 1991-08-27 | Marquardt Mark R | Examination unit including positionable patient chair, examination device and support system |
US5485528A (en) * | 1993-10-15 | 1996-01-16 | Star Technologies, Inc. | Apparatus and method for back-projecting an image |
US10520636B2 (en) | 2017-10-13 | 2019-12-31 | John R. Allen | Whole-body transmission x-ray scanner and methods for whole-body scanning |
-
1938
- 1938-06-28 DE DE1938N0042146 patent/DE693374C/en not_active Expired
- 1938-11-19 DE DEN42671D patent/DE706031C/en not_active Expired
-
1939
- 1939-06-24 GB GB18484/39A patent/GB530477A/en not_active Expired
- 1939-06-26 FR FR856895D patent/FR856895A/en not_active Expired
- 1939-06-27 US US281467A patent/US2281931A/en not_active Expired - Lifetime
- 1939-11-15 GB GB30141/39A patent/GB533697A/en not_active Expired
- 1939-12-20 FR FR51018D patent/FR51018E/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2281931A (en) | 1942-05-05 |
GB533697A (en) | 1941-02-18 |
DE693374C (en) | 1940-07-12 |
FR51018E (en) | 1941-05-28 |
FR856895A (en) | 1940-08-13 |
DE706031C (en) | 1941-06-11 |
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