Fast Microcolumnar Scintillator for Radionuclide Imaging

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$100,000.00
Award Year:
2004
Program:
SBIR
Phase:
Phase I
Contract:
DE-FG02-04ER84054
Award Id:
68559
Agency Tracking Number:
75096S04-I
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
44 Hunt Street, Suite 200, Watertown, MA, 02472
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
VivekNagarkar
Dr.
(617) 668-6937
VNagarkar@RMDInc.com
Business Contact:
GeraldEntine
Dr.
(617) 668-6800
GEntine@RMDInc.com
Research Institute:
n/a
Abstract
75096-Despite excellent scintillator properties and its use in a wide variety of applications, CsI(Tl) has not been used for radionuclide imaging in medical applications. The primary reason is the presence of a strong afterglow component in its scintillation decay, which reduces the energy resolution. Another reason is the absence of thick, pixelated scintillator structures, which are needed to overcome the traditional tradeoff between detection efficiency and spatial resolution, thereby allowing the full potential of current imaging modalities (e.g., Scanning Photon Emission Tomography) to be realized. This project addresses these issues by using co-dopants capable of suppressing the afterglow of CsI(Tl) and by developing thick microcolumnar scintillator structures. As added benefits: (1) the co-dopants are expected to enhance the prompt emission of CsI(Tl) without sacrificing any of its excellent scintillation properties, and (2) the microcolumnar structure will allow thick, high efficiency films to be fabricated while maintaining very high spatial resolution. Phase I will develop co-doped CsI(Tl) films of required geometry for radionuclide imaging. Also, vapor deposition protocols will be established for producing stoichiometrically balanced, thick, microcolumnar films of the co-doped CsI(Tl). The resulting scintillator structures will be characterized, and the superiority of the approach will be demonstrated by comparing the data to that obtained using other scintillators that are currently employed in radionuclide imaging. Commercial Applications and Other Benefits as described by the awardee: The modified scintillator should have widespread use in small animal/human SPECT/CT imaging systems in particular, and nuclear medicine systems in general. Additionally, the readout sensor should have applications in high-speed and ultra-high-speed x-ray imaging, nondestructive testing, and homeland security.

* information listed above is at the time of submission.

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