Abstract
To accurately simulate the down-scatter of Tc-99m photons in the Gd-153 transmission window and in the Tl-201 photopeak projection, the effect of partial energy deposition in the crystal, of collimator scatter and of lead x-rays were included within an accelerated Monte Carlo (MC) framework. It was shown that for accurate modeling of down-scatter, all these effects are important. In particular, a significant increase in accuracy of simulated projections was accomplished when these effects were included.
Original language | English (US) |
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Pages (from-to) | 1517-1521 |
Number of pages | 5 |
Journal | IEEE Nuclear Science Symposium and Medical Imaging Conference |
Volume | 3 |
State | Published - 2001 |
Externally published | Yes |
ASJC Scopus subject areas
- Radiation
- Nuclear and High Energy Physics
- Radiology Nuclear Medicine and imaging