REAL TIME, LIGHT WEIGHT X-RAY IMAGER

Award Information
Agency: Department of Defense
Branch: Army
Contract: N/A
Agency Tracking Number: 18573
Amount: $494,633.00
Phase: Phase II
Program: SBIR
Awards Year: 1993
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Ciencia (old: Techquest)
50 Nye Road, Glastonbury, CT, 06033
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Yong-sheng Chao
 (203) 659-9471
Business Contact
Phone: () -
Research Institution
N/A
Abstract
A COMPACT, LIGHT WEIGHT, LARGE AREA, HIGH RESOLUTION TWO-DIMENSIONAL REAL-TIME DIGITAL X-RAY IMAGING SYSTEM, BASED ON THE DEVELOPMENT OF AN INTEGRATED A-SI:H PHOTODIODE ARRAY AS IMAGE SENSOR IS PROPOSED. THE FIRST PROTOTYPE IMAGE SENSOR WILL HAVE A SENSITIVE AREA 8" X 10" WITH 1024 X 1280 PIXELS COUPLED TO AN OPTIMIZED SCINTILLATOR SUCH AS GD2O2S:TB AS AN X-RAY CONVERTER. EACH DIODE ELEMENT IS CONNECTED THROUGH A INTEGRATED POLY-SILICON NMOS THIN FILM TRANSISTOR TO A COLUNM AND A ROW ANALOG SHIFT REGISTERS WHICH IS CONTROLLED BY 13 MHZ CLOCK PULSES. THE INTEGRATION TIME IS CONTROLLABLE THROUGH A COMPUTER. WITH A DATA TRANSFER TIME 0.1 SEC/FRAME, AND WITH A DISPLAY TIME LESS THAN 1 SEC., THE OUTPUT DATA IS FURTHER DIGITIZED BY A FRAME GRABBER SUD DISPLAYED OR FURTHER PROCESSED BY COMPUTER. THE DIGITAL IMAGE SYSTEM HAS A SENSITIVE AREA AND A IMAGE RESOLUTION COMPARABLE TO THE TRADITIONAL SCREEN FILM COMBINATION; THE SYSTEM CAN HAVE A MUCH HIGHER SENSITIVITY AND DYNAMIC RANGE THAN THE EXISTING SCREEN FILM COMBINATION.

* information listed above is at the time of submission.

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