AEGIS: A Pixel-array Readout IC for Gamma-ray Imaging

Award Information
Agency: Department of Health and Human Services
Branch: N/A
Contract: 1R41CA114895-01
Agency Tracking Number: CA114895
Amount: $189,620.00
Phase: Phase I
Program: STTR
Awards Year: 2005
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Augustine Engineering, 2115 Park Dale Ln, Encinitas, CA, 92024
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 H BARBER
 (520) 626-7682
 BRADB@RADIOLOGY.ARIZONA.EDU
Business Contact
Phone: (760) 753-8781
Research Institution
 UNIVERSITY OF ARIZONA
 UNIVERSITY OF ARIZONA
PO BOX 3308
TUCSON, AZ, 85722
 Nonprofit college or university
Abstract
DESCRIPTION (provided by applicant): CdZnTe arrays are promising detectors for improving nuclear medicine imaging, but existing CdZnTe cameras have limited spatial resolution and small numbers of pixels (space bandwidth product = SpBW). We show that major performance improvements will require high SpBW (>10A5) and small pixels (high resolution). The best approach to obtaining high SpBW detectors is to make many hybrid detector rays composed of a pixellated slab of CdZnTe indium bump bonded to a readout circuit, but a new highperformance readout circuit is required. The University of Arizona Center for Gamma-Ray Imaging (CGRI) and Augustine Engineering have actively collaborated in developing such hybrid detector arrays for use in biomedical gamma ray imaging. We propose to design and build a 64 x 64 readout (AEGIS) in Phase II, which will support the development of high performance clinical semi-conductor cameras. AEGIS will be an event-driven readout with a shaper-amplifier unit cell, active leakage current compensation and 310 um pitch for excellent spatial resolution. In Phase I we will design, fabricate and test an 8 x 8 prototype AEGIS and then make 8x8 hybrid CdZnTe detectors to verify feasibility.

* Information listed above is at the time of submission. *

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