Modeling blur in various detector geometries for MeV radiography
Monte Carlo transport codes have been used to model the detector blur and energy deposition in various detector geometries for applications in MeV radiography. Segmented scintillating detectors, where low Z scintillators combined with a high-Z metal matrix, can be designed in which the resolution increases with increasing metal fraction. Here, the combination of various types of metal intensification screens and storage phosphor imaging plates has also been studied. A storage phosphor coated directly onto a metal intensification screen has superior performance over a commercial plate. Stacks of storage phosphor plates and tantalum intensification screens show an increase in energy deposited and detective quantum efficiency with increasing plate number, at the expense of resolution. Select detector geometries were tested by comparing simulation and experimental modulation transfer functions to validate the approach.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- 89233218CNA000001
- OSTI ID:
- 1544758
- Report Number(s):
- LA-UR-17-20889
- Journal Information:
- Proceedings of SPIE - The International Society for Optical Engineering, Vol. 10132; Conference: SPIE Medical Imaging, Orlando, FL (United States), 13-16 Feb 2017; ISSN 0277-786X
- Publisher:
- SPIECopyright Statement
- Country of Publication:
- United States
- Language:
- English
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