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

Award Information
Agency:
Department of Health and Human Services
Branch
n/a
Amount:
$189,620.00
Award Year:
2005
Program:
STTR
Phase:
Phase I
Contract:
1R41CA114895-01
Agency Tracking Number:
CA114895
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Augustine Engineering
Augustine Engineering, 2115 Park Dale Ln, Encinitas, CA, 92024
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
H BARBER
(520) 626-7682
BRADB@RADIOLOGY.ARIZONA.EDU
Business Contact:
(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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