USA flag logo/image

An Official Website of the United States Government

Fast Microcolumnar Scintillator for Radionuclide Imaging

Award Information

Agency:
Department of Energy
Branch:
N/A
Award ID:
68559
Program Year/Program:
2005 / SBIR
Agency Tracking Number:
75096S04-I
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Radiation Monitoring Devices, Inc.
44 Hunt St. Watertown, MA 02472-4699
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 2005
Title: Fast Microcolumnar Scintillator for Radionuclide Imaging
Agency: DOE
Contract: DE-FG02-04ER84054
Award Amount: $749,999.00
 

Abstract:

75096S Although CsI(Tl) has become the scintillator of choice for a wide variety of applications, it is not been widely used in radionuclide imaging or computed tomography (CT). The primary reason is the presence of an afterglow component in its scintillation decay, which reduces the energy resolution in emission tomography and results in image blur in CT. In addition, thick, pixelated scintillator structures, needed to overcome the traditional tradeoff between detection efficiency and spatial resolution, do not currently exist. This project addresses the first issue by co-doping the scintillator with ions capable of suppressing the afterglow. The issue of tradeoff between detection efficiency and spatial resolution will be addressed by developing thick, microcolumnar, films of co-doped CsI(Tl). In Phase I: (1) single crystals of co-doped CsI(Tl) material were grown and characterized; (2) a synthesis effort demonstrated the feasibility of depositing the material as a microcolumnar film by vapor deposition techniques; and (3) the resulting films were evaluated to confirm the appropriate scintillation properties. The codoped CsI(Tl) scintillator exhibited a reduction in afterglow of almost two orders of magnitude, compared to current commercial CsI(Tl). Phase II will (1) study the physics of afterglow to gain a better understanding of underlying mechanisms, (2) incorporate selected co-dopants into the CsI(Tl) lattice, (3) characterize the decay time, afterglow, light yield, and time-dependent spectral distribution of the crystals and the microcolumnar films under x-ray excitation, and (4) develop thick, fast films for x-ray and nuclear imaging. Commercial Applications and Other Benefits as described by the awardee: Due to its low cost and excellent properties, the proposed scintillator should find widespread use in small animal/human SPECT/CT imaging systems in particular, and nuclear medicine systems in general. Additional applications include high-speed and ultrahigh-speed x-ray imaging, nondestructive testing, and homeland security.

Principal Investigator:

Vivek V. Nagarkar
Dr.
6176686937
VNagarkar@RMDInc.com

Business Contact:

Gerald Entine
Dr.
6176686800
GEntine@RMDInc.com
Small Business Information at Submission:

Radiation Monitoring Devices, Inc.
44 Hunt Street Watertown, MA 02472

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No