A NEW TWO-DIMENSIONAL POSITION ENCODER FOR POSITRON EMISSION TOMOGRAPHY (PET)-

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$500,000.00
Award Year:
1986
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
2537
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Computer Technology & Imaging
215 Center Park Drive, Knoxville, TN, 37922
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr. Ronald Nutt
Principal Investigator
(615) 966-7539
Business Contact:
() -
Research Institution:
n/a
Abstract
A NEW TWO-DIMENSIONAL POSITION ENCODER IS PLANNED FOR PET WITH POSITION RESOLUTION BETTER THAN 3 MM. THE NEW DETECTOR INCLUDES 32 BISMUTH GERMANATE (BGO) SCINTIL- LATION CRYSTALS MOUNTED ON A LIGHT GUIDE. THE LIGHT GUIDE PROVIDES A SQUARE ROOT SEPARATION OF THE LIGHT DISTRIBUTED FROM EACH CRYSTAL. THE LIGHT FROM THE LIGHT GUIDE IS DETECTED BY TWO DUAL HAMAMATSU PHOTO- MULTIPLIER TUBES (R1548) THAT ARE ONE INCH SQUARE. THE SIGNAL FROM EACH PHOTOMULTIPLIER IS PROCESSED THROUGH THE ENCODING ELECTRONICS TO PRODUCE A DIGITAL SIGNAL INDICATING A SIGNAL POSITION (1 OUT OF 32) FOR EACH 511 KEV GAMMA RAY IMPINGING ON THE DETECTOR. THE DIMENSIONS OF EACH OF THE 32 CRYSTALS ARE NOMINALLY 3 X 12 X 30 MM. IT IS ANTICIPATED THAT THE DETECTOR, INCLUDING CRYSTALS, LIGHT GUIDE, PHOTOMULTIPLIER, AND ELECTRONICS FOR THE 32-CRYSTAL ARRAY WILL COST $2,500 COMPARED TO THE ACTUAL COST OF $15,000 FOR 32 INDIVIDUAL CRYSTALS, PHOTOMULTIPLIERS, AND SETS OF ELECTRONICS.

* information listed above is at the time of submission.

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