US4584478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radionuclide annular single crystal scintillator camera with rotating collimator
Assignee: Digital Scintigraphics Inc
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Filing: 1983-02-28
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Granted: 1986-04-22
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Expires: 2003-02-28
Abstract
Abstract A radionuclide emission tomography camera for sensing gamma ray emissions from a source within the field of view, including: a fixed position-sensitive detector, responsive to the gamma ray emissions and surrounding the field of view, for detecting the contact position and the trajectory from which a gamma ray emission originates; a rotatable collimator disposed between the fixed position-sensitive detector and the field of view and including at least one array of collimator elements for restricting and collimating the gamma ray emissions; and means for rotating the collimator relative to the fixed position-sensitive detector for exposing different sections of the position-sensitive detector to the gamma ray emissions in order to view the source from different angles.
Inventors
- 👤 Sebastian Genna
- 👤 Sing-Chin Pang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:20
CPC Classifications
G; G21; G21K; G21K1/00; G21K1/02; G21K1/025; A; A61; A61B; A61B6/00; A61B6/02; A61B6/03; A61B6/037; G01; G01T; G01T1/00; G01T1/16; G01T1/161; G01T1/164; G01T1/1641; G01T1/1642; G01T1/29; G01T1/2914; G01T1/2921; G01T1/2985
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
129 words
A radionuclide emission tomography camera for sensing gamma ray emissions from a source within the field of view, comprising: a fixed, position-sensitive detector means, responsive to said gamma ray emissions and surrounding said field of view, for detecting the contact position and the trajectory from which a gamma ray emission originates, said fixed, position-sensitive detector including a single continuous stationary scintillation crystal; rotatable collimator means, disposed between the fixed, position-sensitive detecto means and said field of view, and incuding at least one array of collimator elements, for restricting and collimating the gamma ray emissions; and means for rotating said collimator means relative to the fixed, position-sensitive detector, for exposing different sections of the position-sensitive detector to the gamma ray emissions in order to view the source from different angles.
Claim 2
Dependent Claim
129 words
A radionuclide emission tomography camera for sensing gamma ray emissions from a source within the field of view, comprising: a fixed, position-sensitive detector means, responsive to said gamma ray emissions and surrounding said field of view, for detecting the contact position and the trajectory from which a gamma ray emission originates, said fixed, position-sensitive detector including a single continuous stationary scintillation crystal; rotatable collimator means, disposed between the fixed, position-sensitive detecto means and said field of view, and incuding at least one array of collimator elements, for restricting and collimating the gamma ray emissions; and means for rotating said collimator means relative to the fixed, position-sensitive detector, for exposing different sections of the position-sensitive detector to the gamma ray emissions in order to view the source from different angles.
Claim 3
Dependent Claim
125 words
A radionuclide emission tomography camera for sensing gamma ray emissions from a source within the field of view, comprising: a fixed scintillation means surrounding the field of view for producing scintillations in response to incident gamma rays, said scintillation means including a single continuous stationary scintillation crystal; photosensor means, responsive to said scintillation means, for producing an output in response to said scintillations; rotatable collimator means contained within said scintillation means between said scintillation means and the field of view and including at least one array of collimator elements; and means for rotating said collimator means relative to the fixed scintillation means to provide a number of exposures of the gamma ray source in the field of view through each said array of collimator elements.
Claim 4
Dependent Claim
125 words
A radionuclide emission tomography camera for sensing gamma ray emissions from a source within the field of view, comprising: a fixed scintillation means surrounding the field of view for producing scintillations in response to incident gamma rays, said scintillation means including a single continuous stationary scintillation crystal; photosensor means, responsive to said scintillation means, for producing an output in response to said scintillations; rotatable collimator means contained within said scintillation means between said scintillation means and the field of view and including at least one array of collimator elements; and means for rotating said collimator means relative to the fixed scintillation means to provide a number of exposures of the gamma ray source in the field of view through each said array of collimator elements.
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) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |