Title

Simulation of Imaging with Sodium Iodide Crystals and Position-Sensitive Photomultiplier Tubes

Document Type

Article

Publication Date

1-1-1994

Abstract

The imaging characteristics of miniature gamma cameras that consist of a single sodium iodide (NaI(Tl)) crystal coupled to a position-sensitive photomultiplier tube (PSPMT) have been studied via Monte Carlo simulations. Images obtained with such cameras with the use of conventional position calculations exhibit considerable distortions, particularly compression. This study demonstrates that the distortions result primarily from non uniform sensitivities of PSPMTs and secondarily from nonlinear responses of PSPMTs, light-reflection properties resulting from the treatments of crystals, and light-refractive properties of glass interfaces between crystals and photocathodes. Simulation results are compared to images obtained with a prototype miniature gamma camera. © 1994 IEEE

Publication Source (Journal or Book title)

IEEE Transactions on Nuclear Science

First Page

1510

Last Page

1515

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