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Computed Tomography Algorithms for Helical Scanned Data

Award Information

Agency:
Department of Defense
Branch:
Army
Award ID:
36786
Program Year/Program:
1997 / SBIR
Agency Tracking Number:
36786
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
ENSCO Inc
5400 Port Royal Rd Springfield, VA 22151
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 1997
Title: Computed Tomography Algorithms for Helical Scanned Data
Agency / Branch: DOD / ARMY
Contract: N/A
Award Amount: $743,098.00
 

Abstract:

The revolution in digital processor and memory technology is making it feasible to execute Computed Tomography, CT, at much higher rates. Use of multiple fixed sources eliminates the rate limitation of mechanical scanning. The final limit to accurate CT scanning of objects in rapid continuous motion is artifacts produced by different projection planes through the object. Methods of minimizing the effects of plane offsets are defined. They include interpolation between sequential scans and maximum likelihood weighting to maximize the consistency of the reconstruction. The improvement of these techniques over straightforward reconstruction of projections in differing planes will be quantified. An Algebraic Reconstruction Technique is used that can accommodate any source-detector geometry. X-rays are the most common method of noninvasive internal inspection. Rapid, economical, accurate CT scanning will greatly facilitate all types of X-ray inspection now used and make many more feasible. Some examples are parts and assembly inspection, inspection of injection molds, and composite materials for voids, and inspection of machines, plumbing and pressure vessels, and bulk materials for cracks, voids, or adulteration.

Principal Investigator:

John L. Perry
7033219000

Business Contact:

Small Business Information at Submission:

Ensco, Inc.
5400 Port Royal Rd Springfield, VA 22151

EIN/Tax ID:
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No