Patent US3852602A successfully refreshed from Google Patents.
US3852602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scintillation camera with rapid sequence imaging device
Assignee: Nuclear Chicago Corp
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Filing: 1972-12-04
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Granted: 1974-12-03
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Expires: 1992-12-04
Abstract
Abstract An Anger-type camera with a rapid sequence imaging device for recording a series of sequential images on a single sheet of 11 X 14 inch photographic film. The CRT image is minified and electronically stepped across the CRT screen under the control of a timer. The minified image can also be placed at a particular selected location by a manual control.
Inventors
- 👤 R Gramm
- 👤 P Walton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:46
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/161; G01T1/164; G01T1/1641; G01T1/1642; G01T1/1648; A; A61; A61B; A61B6/00; A61B6/42; A61B6/4208; A61B6/4258
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
286 words
A radiation imaging and visual display device for displaying plural images of a radioactive object, each image representing radioactive distribution in said object during a different time interval within a measurement period, comprising: a. radiation imaging means including a radiation sensitive transducer operative to produce pairs of electrical signals respectively representing X and Y directional components of interactions of quanta of radiation therewith in a two dimensional co-ordinate system, b. a cathode ray tube connected to said radiation imaging means and equipped with a screen and generating an electron beam impinging upon said screen and including beam deflection circuitry acting upon said electron beam in mutually perpendicular directions to which the aforesaid X and Y directions correspond to receive said pairs of electrical output signals and to display a flash of light of temporary duration on said screen in response to each of said pairs of electrical output signals, c. electron beam biasing means acting upon the aforesaid beam deflection circuitry to advance the electron beam in stepwise fashion across the screen in the aforesaid mutually perpendicular directions to a plurality of separate and mutually exclusive image recording areas on said screen, d. timing means controlling said electron beam biasing means to cause the aforesaid beam to produce flashes of light only within a single one of said image recording areas for a predetermined time interval and to thereafter actuate said electron beam biasing means to advance said beam to a next sequential image recording area during a measurement period, and e. photographic film positioned in visual communication with said screen of said cathode ray tube for permanently recording separate images each representing those flashes of light produced on said screen within a particular time interval.
Claim 2
Dependent Claim
286 words
A radiation imaging and visual display device for displaying plural images of a radioactive object, each image representing radioactive distribution in said object during a different time interval within a measurement period, comprising: a. radiation imaging means including a radiation sensitive transducer operative to produce pairs of electrical signals respectively representing X and Y directional components of interactions of quanta of radiation therewith in a two dimensional co-ordinate system, b. a cathode ray tube connected to said radiation imaging means and equipped with a screen and generating an electron beam impinging upon said screen and including beam deflection circuitry acting upon said electron beam in mutually perpendicular directions to which the aforesaid X and Y directions correspond to receive said pairs of electrical output signals and to display a flash of light of temporary duration on said screen in response to each of said pairs of electrical output signals, c. electron beam biasing means acting upon the aforesaid beam deflection circuitry to advance the electron beam in stepwise fashion across the screen in the aforesaid mutually perpendicular directions to a plurality of separate and mutually exclusive image recording areas on said screen, d. timing means controlling said electron beam biasing means to cause the aforesaid beam to produce flashes of light only within a single one of said image recording areas for a predetermined time interval and to thereafter actuate said electron beam biasing means to advance said beam to a next sequential image recording area during a measurement period, and e. photographic film positioned in visual communication with said screen of said cathode ray tube for permanently recording separate images each representing those flashes of light produced on said screen within a particular time interval.
Claim 3
Dependent Claim
261 words
A radiation imaging and visual display device in combination comprising: radiation imaging means including a radiation sensitive transducer operative to produce pairs of electrical output signals representing two dimensional spatial co-ordinates of interactions of quanta of radiation therewith, and image recording means comprising: a. a cathode ray tube having a screen and operative to generate a single flash of light of temporary duration at a single one of a discrete number of possible positions on said screen associated with the spatial coordinates of interaction of a quantum of radiation with said transducer in response to each of said pairs of electrical output signals, b. signal generating means for producing, in the same aforesaid discrete number, combinations of predetermined electrical offset signals as inputs to said cathode ray tube to define, in the same aforesaid discrete number, image recording locations on said screen, each location corresponding to a single unique combination of said offset signals, c. visual indicating means connected to said offset signal generating means for identifying the unique combination of offset signals being passed from said signal generating means to said cathode ray tube at any instant, d. offset signal governing means controlling said signal generating means to sequentially produce no more than a single one of said unique combinations of offset signals at any instant, and to shift to the next sequential combination of offset signals after a predetermined elapsed time interval, and e. photographic film positioned in visual communication with said screen of said cathode ray tube for permanently recording the flashes of light produced on said screen.
Claim 4
Dependent Claim
261 words
A radiation imaging and visual display device in combination comprising: radiation imaging means including a radiation sensitive transducer operative to produce pairs of electrical output signals representing two dimensional spatial co-ordinates of interactions of quanta of radiation therewith, and image recording means comprising: a. a cathode ray tube having a screen and operative to generate a single flash of light of temporary duration at a single one of a discrete number of possible positions on said screen associated with the spatial coordinates of interaction of a quantum of radiation with said transducer in response to each of said pairs of electrical output signals, b. signal generating means for producing, in the same aforesaid discrete number, combinations of predetermined electrical offset signals as inputs to said cathode ray tube to define, in the same aforesaid discrete number, image recording locations on said screen, each location corresponding to a single unique combination of said offset signals, c. visual indicating means connected to said offset signal generating means for identifying the unique combination of offset signals being passed from said signal generating means to said cathode ray tube at any instant, d. offset signal governing means controlling said signal generating means to sequentially produce no more than a single one of said unique combinations of offset signals at any instant, and to shift to the next sequential combination of offset signals after a predetermined elapsed time interval, and e. photographic film positioned in visual communication with said screen of said cathode ray tube for permanently recording the flashes of light produced on said screen.
Claim 5
Dependent Claim
268 words
In combination: a radiation imaging device, including a radiation sensitive transducer, operative to produce a pair of electrical output signals representing spatial coordinates of interaction of a quantum of radiation with said transducer; image recording means receiving said output signals and operative to define a plurality of disCrete image recording locations comprising: a pair of offset generators producing a pair of recording location signals having n and m discrete values, respectively, where n and m are integers greater than one; combining means for combining said pair of coordinate electrical output signals and said pair of recording location signals to produce a pair of modified coordinate electrical signals associated with one of said discrete image recording locations; a cathode ray tube for displaying said pair of modified coordinate electrical signals as a spatially located flash of light; and camera means for recording said flash of light on a photographic medium; and control means coupled to said image display and recording means and operative to select one of said discrete image recording locations for said output signals in accordance with one of a manual selection mode and an automatically timed stepping mode comprising: a scaler having a counting capability equal to the product of n and m, and having outputs coupled to said pair of offset generators for controlling the generation of said recording location signals; a timer for producing timing pulses at regular preselected intervals for accumulating in said scaler; a manual pulser for producing pulses for accumulating in said scaler; and a mode switch for selecting one of said timer and said manual pulser for inputting said scaler.
Claim 6
Dependent Claim
268 words
In combination: a radiation imaging device, including a radiation sensitive transducer, operative to produce a pair of electrical output signals representing spatial coordinates of interaction of a quantum of radiation with said transducer; image recording means receiving said output signals and operative to define a plurality of disCrete image recording locations comprising: a pair of offset generators producing a pair of recording location signals having n and m discrete values, respectively, where n and m are integers greater than one; combining means for combining said pair of coordinate electrical output signals and said pair of recording location signals to produce a pair of modified coordinate electrical signals associated with one of said discrete image recording locations; a cathode ray tube for displaying said pair of modified coordinate electrical signals as a spatially located flash of light; and camera means for recording said flash of light on a photographic medium; and control means coupled to said image display and recording means and operative to select one of said discrete image recording locations for said output signals in accordance with one of a manual selection mode and an automatically timed stepping mode comprising: a scaler having a counting capability equal to the product of n and m, and having outputs coupled to said pair of offset generators for controlling the generation of said recording location signals; a timer for producing timing pulses at regular preselected intervals for accumulating in said scaler; a manual pulser for producing pulses for accumulating in said scaler; and a mode switch for selecting one of said timer and said manual pulser for inputting said scaler.
Claim 7
Dependent Claim
30 words
The apparatus of claim 3 further comprising attenuation means acting upon said electrical output signals, whereby minification of images of objects emitting radiation is effected in said cathode ray tube.
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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |