US5747810A
Expired / Lapsed
US
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Simultaneous absorption and diffusion tomography system and method using direct reconstruction of scattered radiation
Assignee: Revvity Health Sciences Inc
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Filing: 1995-05-15
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Granted: 1998-05-05
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Expires: 2015-05-15
Abstract
Abstract A method for the direct reconstruction of an object from measurements of the transmitted intensity of diffusively scattered radiation effected by irradiating the object with a source of continuous wave radiation. 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 of the diffusively scattered radiation.
Inventors
- 👤 John Carl Schotland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:28
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/4795
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
A method for generating absorption and diffusion images of an object comprising the steps of irradiating the object with a continuous wave 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
92 words
A method for generating absorption and diffusion images of an object comprising the steps of irradiating the object with a continuous wave 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
92 words
A system for generating absorption and diffusion images of an object comprising continuous wave 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
92 words
A system for generating absorption and diffusion images of an object comprising continuous wave 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.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-04 | 2001-11-03 | 2002-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-04 | 2005-11-03 | 2006-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-04 | 2009-11-03 | 2010-05-05 | $7700.00 | Window Closed / Lapsed |