US4020347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mammography
Assignee: Optische Industrie de Oude Delft NV
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Filing: 1976-03-29
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Granted: 1977-04-26
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Expires: 1996-03-29
Abstract
Abstract Method and apparatus for detecting and recording breast cancer, in which the breast is exposed to X-rays, preferably in the so-called soft range, the transmitted beam of rays is scanned by means of a moving, strip-shaped screen and the image of the strip-shaped screen is picked up with a television pickup tube moving along with the screen, and is displayed on a monitor tube.
Inventors
- 👤 Ronald Jan Geluk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:24
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/50; A61B6/502; A61B6/06
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
53 words
A method of detecting and recording breast cancer, wherein a breast is exposed to X-rays, the transmitted beam of rays is scanned by a moving strip-shaped screen and the image of the strip-shaped screen is picked up by a television pickup tube moving along with the screen and displayed on a monitor tube.
Claim 2
Independent Claim
53 words
A method of detecting and recording breast cancer, wherein a breast is exposed to X-rays, the transmitted beam of rays is scanned by a moving strip-shaped screen and the image of the strip-shaped screen is picked up by a television pickup tube moving along with the screen and displayed on a monitor tube.
Claim 3
Dependent Claim
18 words
A method according to claim 1, wherein the strip-shaped screen and the television pickup tube are moved continuously.
Claim 4
Dependent Claim
18 words
A method according to claim 1, wherein the strip-shaped screen and the television pickup tube are moved stepwise.
Claim 5
Dependent Claim
32 words
A method according to claim 1, wherein the monitor tube is moved in the same manner as the pickup tube and the screen, the monitor image being recorded on a stationary film.
Claim 6
Dependent Claim
21 words
A method according to claim 4, wherein the film is moved relatively to the monitor tube for forming a total image.
Claim 7
Dependent Claim
27 words
A method according to claim 1, wherein the X-rays are focussed at the breast through a slotted diaphragm moving in correspondence with the movement of the screen.
Claim 8
Dependent Claim
32 words
A method according to claim 1, wherein the period of time during which each object part is recorded is adapted instantaneously to the local physical build-up of the breast to be examined.
Claim 9
Dependent Claim
33 words
Method according to claim 6, wherein there is mounted in the radiation transmitted through the slotted diaphragm an X-ray filter which, over a part of the diaphragm surface, exclusively transmits relatively hard radiation.
Claim 10
Dependent Claim
24 words
A method according to claim 1, wherein colour filters are mounted on the monitor tube window and that recording takes place on colour film.
Claim 11
Dependent Claim
104 words
Apparatus for detecting and recording breast cancer, characterized by a stationary X-ray source; an X-ray permeable support surface for the breast to be examined; a frame adapted for movement underneath the support surface and which carries a strip- shaped screen by means of which the beam of X-rays can be scanned through the movement of the frame, said frame also carrying an optical system and a television pickup tube; a monitor tube; and a magazine for a photographic film whereon the images of the monitor tube can be successively recorded for providing a total image, the film and the monitor tube being relatively movable.
Claim 12
Dependent Claim
104 words
Apparatus for detecting and recording breast cancer, characterized by a stationary X-ray source; an X-ray permeable support surface for the breast to be examined; a frame adapted for movement underneath the support surface and which carries a strip- shaped screen by means of which the beam of X-rays can be scanned through the movement of the frame, said frame also carrying an optical system and a television pickup tube; a monitor tube; and a magazine for a photographic film whereon the images of the monitor tube can be successively recorded for providing a total image, the film and the monitor tube being relatively movable.
Claim 13
Dependent Claim
32 words
Apparatus according to claim 10, characterized by a slotted diaphragm disposed between the X-ray source and the breast, said diaphragm being movable in correspondence with the movement of the strip-shaped screen. .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |