Patent US5758653A successfully refreshed from Google Patents.
US5758653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simultaneous absorption and diffusion imaging system and method using direct reconstruction of scattered radiation
Assignee: Nytell Software LLC
•
Filing: 1995-04-10
•
Granted: 1998-06-02
•
Expires: 2015-04-10
Abstract
Abstract A method for the direct reconstruction of the absorption and diffusion images from measurements of the transmitted intensity of the scattered radiation effected by irradiating the object with a time-domain source. The transmitted intensity is related to the absorption and the diffusion coefficients by an integral operator. The images are directly reconstructed by executing a prescribed mathematical algorithm, as determined with reference to the integral operator, on the transmitted intensity.
Inventors
- 👤 John Carl Schotland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:36
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/4795
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
91 words
A method for generating absorption and diffusion images of an object comprising the steps of irradiating the object with a time-domain source of radiation, measuring a transmitted intensity due predominantly to diffusively scattered radiation wherein said transmitted intensity is related to an absorption coefficient and a diffusion coefficient by an integral operator, and directly reconstructing the images by executing a prescribed mathematical algorithm, determined with reference to said integral operator, on said transmitted intensity, said step of directly reconstructing including the step of computing an absorption kernel and a diffusion kernel.
Claim 2
Independent Claim
91 words
A method for generating absorption and diffusion images of an object comprising the steps of irradiating the object with a time-domain source of radiation, measuring a transmitted intensity due predominantly to diffusively scattered radiation wherein said transmitted intensity is related to an absorption coefficient and a diffusion coefficient by an integral operator, and directly reconstructing the images by executing a prescribed mathematical algorithm, determined with reference to said integral operator, on said transmitted intensity, said step of directly reconstructing including the step of computing an absorption kernel and a diffusion kernel.
Claim 3
Dependent Claim
25 words
The method as recited in claim 1 wherein the step of irradiating the object includes the step of successively irradiating the object with different wavelengths.
Claim 4
Independent Claim
91 words
A system for generating absorption and diffusion images of an object comprising time-domain radiation source means for irradiating the object, detector means for measuring a transmitted intensity due predominantly to diffusively scattered radiation wherein said transmitted intensity is related to an absorption coefficient and a diffusion coefficient by an integral operator, and means for directly reconstructing the images by executing a prescribed mathematical algorithm, determined with reference to said integral operator, on said transmitted intensity, said means for directly reconstructing including means for computing an absorption kernel and a diffusion kernel.
Claim 5
Independent Claim
91 words
A system for generating absorption and diffusion images of an object comprising time-domain radiation source means for irradiating the object, detector means for measuring a transmitted intensity due predominantly to diffusively scattered radiation wherein said transmitted intensity is related to an absorption coefficient and a diffusion coefficient by an integral operator, and means for directly reconstructing the images by executing a prescribed mathematical algorithm, determined with reference to said integral operator, on said transmitted intensity, said means for directly reconstructing including means for computing an absorption kernel and a diffusion kernel.
Claim 6
Dependent Claim
25 words
The system as recited in claim 3 wherein said source means for irradiating the object includes means for successively irradiating the object with different wavelengths.
References Cited (Backward Citations)
US5032024A
Cited
US5070455A
Cited
US5213105A
Cited
US5203339A
Cited
US5413098A
Cited
US5349951A
Cited
US5371368A
Cited
US5386827A
Cited
US5492118A
Cited
US5528365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-06-01 | 2001-12-01 | 2002-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-01 | 2005-12-01 | 2006-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-01 | 2009-12-01 | 2010-06-02 | $7700.00 | Window Closed / Lapsed |