Novel Laser Scanning Technology for Computed Radiography

Award Information
Agency:
Department of Health and Human Services
Branch
n/a
Amount:
$1,061,378.00
Award Year:
2010
Program:
SBIR
Phase:
Phase II
Contract:
2R44RR025874-02
Award Id:
89461
Agency Tracking Number:
RR025874
Solicitation Year:
n/a
Solicitation Topic Code:
NCRR
Solicitation Number:
n/a
Small Business Information
MYTEK, LLC, 15350 25th AVE N, STE 110, PLYMOUTH, MN, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
148034387
Principal Investigator:
WILLIAM HOGAN
(763) 746-8045
BHOGAN@VIXARINC.COM
Business Contact:
BRENNER HIBBS
() -
mhibbsbrenner@vixarinc.com
Research Institution:
n/a
Abstract
DESCRIPTION (provided by applicant): The goal of this project is to improve the size, robustness, patient throughput and image quality of Computed Radiography systems. Operational efficiencies are increasingly driving the industry toward digital imaging. C omputed radiography equipment is generally less expensive than digital radiography systems, but is perceived as offering somewhat lower image quality, and a lower patient throughput. Our technology would provide a more compact and robust system that would address the mobile market, as well as enable computed radiography to compete more effectively on an image quality and throughput basis, while maintaining its cost advantage in terms of capital expense. We propose to apply a technology that has recently bec ome available, i.e. Vertical Cavity Surface Emitting Laser (VCSEL) arrays in the laser scanning source. VCSEL arrays can be fabricated monolithically on a single chip with a very precise spacing and good performance uniformity. The array can replace the fl ying spot scanners which use a single laser and a rotating mirror. This will result in a more compact and more robust scanner. In addition, the technology enables a linescan mode of operation. This ability shifts the normal trade-offs between scan speed an d image quality to a more favorable point. Such linescan units have been demonstrated with discrete lasers, but the manufacturing of such systems is challenging. Our Phase I project demonstrate the feasibility of this approach by building a 2.5cm scanner w hich included the VCSEL array, driver I.C.s and lensing on a board, and demonstrated the ability to resolve 5 line pairs per millimeter. This proposed Phase II project will build two full width (35cm) scanners, the first with a 1005m laser pitch, and the s econd with a 505m laser pitch. Both prototypes will be integrated into and evaluated in real CR systems. Performance will be evaluated in terms of MTF, NPS, and DQE, and performance comparable to, and subsequently better than, existing systems will be demo nstrated. PUBLIC HEALTH RELEVANCE: This project develops a new stimulating laser scanning technology for computed radiography which will result in a compact, robust unit with improved efficiency and image quality. A successful project would result i n a cost-effective alternative for digital imaging, while maintaining high image quality. The technology is expected to be particularly beneficial to portable units, to be used bedside, in clinics, or even transported to skilled nursing facilities, and to improving the operational efficiency by dramatically improving scan and digitization times.

* information listed above is at the time of submission.

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