US5602894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-dimensional imaging system using laser generated ultrashort x-ray pulses
Assignee: QEL Inc
•
Filing: 1994-08-04
•
Granted: 1997-02-11
•
Expires: 2014-08-04
Abstract
Abstract An apparatus for imaging the interior of an object illuminates the object with a source of picosecond collimated x-ray pulses. An array of x-ray detectors senses pulses of Compton scattered x-rays from the object and a processor accumulates the data to construct an image of the object by accumulating data from ellipsoidal sections of the object.
Inventors
- 👤 Michael J. Bardash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:59
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/10; A61N5/103; G; G21; G21K; G21K1/00; G21K1/06; G21K5/00; G21K5/02; Y; Y10; Y10S; Y10S378/00; Y10S378/901
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
94 words
A method for imaging the interior of an object located in a field of view volume, said interior comprising a plurality of x-ray scattering sites, said method comprising scattering an ultra short collimated x-ray pulse from said scattering sites, detecting the scattering of said ultra short collimated x-ray pulse at a plurality of x-ray detectors determining for each x-ray detector an ellipsoidal surface passing through at least one of said scattering sites, determining a plurality of points of intersection of said ellipsoidal surfaces, forming a visible image of said plurality of point of intersection.
Claim 2
Independent Claim
94 words
A method for imaging the interior of an object located in a field of view volume, said interior comprising a plurality of x-ray scattering sites, said method comprising scattering an ultra short collimated x-ray pulse from said scattering sites, detecting the scattering of said ultra short collimated x-ray pulse at a plurality of x-ray detectors determining for each x-ray detector an ellipsoidal surface passing through at least one of said scattering sites, determining a plurality of points of intersection of said ellipsoidal surfaces, forming a visible image of said plurality of point of intersection.
Claim 3
Dependent Claim
74 words
The method of claim 1 wherein said step of determining a plurality of points of intersection comprises assigning an equal numerical weight to each element of the surface of each ellipsoidal surface, summing the weights at each point of the field of view volume, replacing the summed weights for each surface by the weight divided by the sum of all weights on that surface, repeating the last two steps until consistent values are obtained.
References Cited (Backward Citations)
US3069654A
Cited
US4215274A
Cited
US4401900A
Cited
US4598415A
Cited
US4857748A
Cited
US5042058A
Cited
US5247561A
Cited
US5225670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-02-11 | 2000-08-12 | 2001-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-02-11 | 2004-08-12 | 2005-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-02-11 | 2008-08-12 | 2009-02-11 | $7700.00 | Window Closed / Lapsed |