 |
|
|
|
|
|
 Title: |
US5359637:
Self-calibrated tomosynthetic, radiographic-imaging system, method, and device
[ Derwent Title ]
|
| Country: |
US United States of America
|
| |
| Inventor: |
Webber, Richard L.; Winston-Salem, NC
|
| Assignee: |
Wake Forest University, Winston-Salem, NC
other patents from WAKE FOREST UNIVERSITY (616825) (approx. 75)
News, Profiles, Stocks and More about this company
|
| Published / Filed: |
1994-10-25
/ 1992-04-28
|
| Application Number: |
US1992000875249
|
| IPC Code: |
Advanced:
A61B 6/00;
A61B 6/02;
A61B 6/06;
A61B 6/14;
Core:
more...
IPC-7:
G01N 23/00;
|
| ECLA Code: |
A61B6/02J; A61B6/14;
|
| U.S. Class: |
Current:
378/002;
378/023;
378/162;
Original:
378/002;
378/023;
378/162;
|
| Field of Search: |
378/002,23,162,163
|
| Government Interest: |
The invention was made with government support under Contract No. 70NANBOH1070 awarded by the National Institute of Standards and Technology. The government has certain rights in the invention.
|
| Priority Number: |
| 1992-04-28 |
US1992000875249 |
|
| Abstract: |
A self-calibrating tomosynthetic x-ray system is provided. A calibrated device for recording radiographic images of a selected object irradiated by a source of radiation includes a first radiolucent radiographic recording medium in the form of a CCD device for recording a first projected radiographic image of the selected object. A second radiographic recording medium in the form of a CCD device is supported in fixed generally parallel position relative to the first radiographic recording medium to permit radiation from the source to pass through the first radiographic recording medium and to impinge upon the second radiographic recording medium for recording a second projected radiographic image of the selected object. A radiopaque fiducial reference in the form of a grid is supported in fixed position generally between the first and second radiographic recording mediums to permit a projected image of the radiopaque fiducial reference to be recorded on the second radiographic recording medium. Projected radiographic images of the object and the fiducial reference are then recorded at different arbitrary relative positions between the source of radiation and the object, the fiducial reference, and the recording mediums. An image of a selected object at a selected slice position through the object is synthesized from selected projected radiographic images of the object and the fiducial reference recorded by the calibrated device.
|
| Attorney, Agent or Firm: |
Dann, Dorfman, Herrell and Skillman ;
|
| Primary / Asst. Examiners: |
Church, Craig E.;
|
| INPADOC Legal Status: |
Show legal status actions
Family Legal Status Report
|
| Designated Country: |
AT AU BB BG BR CA CH DE DK EP ES FI GB HU JP KP KR LK LU MG MN MW NL NO OA PL RO RU SD SE UA
|
| Family: |
Show 15 known family members
|
First Claim:
Show all 69 claims |
What is claimed is:
1. A system for synthesizing an image of a selected object at a selected slice position through the selected object from a plurality of projected radiographic images of the selected object comprising:
- (a) at least one radiographic recording means for recording radiographic images of the selected object;
- (b) at least one fiducial reference held in fixed position relative to the recording means;
- (c) positioning means for holding the recording means and the fiducial reference in fixed position relative to the selected object;
- (d) at least one source of radiation for irradiating the selected object to enable projected radiographic images of the object and the fiducial reference to be recorded on the recording means;
- (e) position varying means for varying the relative positions between (1) the source of radiation and (2) the object, the fiducial reference and the recording means so that projected radiographic images of the object and the fiducial reference are recorded on the recording means at different arbitrary relative positions between (1) the source of radiation and (2) the object, the fiducial reference and the recording means; and
- (f) an image synthesizer for synthesizing an image of the selected object at a selected slice position through the object from selected projections of the projected radiographic images of the object and the fiducial reference recorded on the recording means.
|
| Background / Summary: |
Show background / summary
|
| Drawing Descriptions: |
Show drawing descriptions
|
| Description: |
Show description
|
| Forward References: |
Show 24 U.S. patent(s) that reference this one
|
|
|
|
|
|
|
| Foreign References: |
None
|
| Other Abstract Info: |
DERABS G93-369146
|
| Other References: |
Webber, R. L., et al., "Synthesis of Arbitrary X-Ray Projections from a Finite Number of Existing Projections," SPIE vol. 535 --Application of Optical Instrumentation in Medicine XIII.
Grant, D. G., "Tomosynthesis: A Three-Dimensional Radiographic Imaging Technique," IEEE Transactions on Bio-Medical Engineering, vol. BME-19, No. 1, Jan. 1972, pp. 20-28.
Cited by 8 patents
Ruttimann, U. E., et al., "Restoration of Digital Multiplane Tomosynthesis by a Constrained Iteration Method," IEEE Transactions on Medical Imaging, vol. ME-3, No. 3, Sep. 1984, pp. 141-148.
Ruttimann, U. E., et al., "An Optimal Synthetic Aperture for Circular Tomosynthesis," Medical Physics, vol. 16, No. 3, May/Jun. 1989, pp. 398-405.
(8 pages)
Cited by 8 patents
|
|
 Nominate this for the Gallery...
|
|
