Statistical analysis for discrimination of prompt gamma ray peak induced by high energy neutron: Monte Carlo simulation study

Abstract

The purpose of this research is a statistical analysis for discrimination of prompt gamma ray peak induced by the 14.1 MeV neutron particles from spectra using Monte Carlo simulation. For the simulation, the information of 18 detector materials was used to simulate spectra by the neutron capture reaction. The discrimination of nine prompt gamma ray peaks from the simulation of each detector material was performed. We presented the several comparison indexes of energy resolution performance depending on the detector material using the simulation and statistics for the prompt gamma activation analysis.

Pixelized Measurement of 99mTc-HDP Micro Particles Formed in Gamma Correction Phantom Pinhole Scan: a Reference Study

“…For pixelized measurement, the line spread function was employed [4]. The function is a kind of image profile that reveals the intensity of signal from image matrix [5]. Actually, the size of 99m Tc-HDP deposits shown in GCPS was calculated by measuring the FWHM of the signal peak ( Fig.…”

“…The aim was to set up an in-vitro model of the size measurement of microscopic 99m Tc-HDP uptake that can be used clinically in in-vivo 99m Tc-HDP bone scan. Thus, the objectives of this study were first to secure the reliable source of microscopic 99m Tc-HDP deposits for micrometric measurement using standard flood phantom and handy small dish phantom; second, to demonstrate individual deposits with high 99m Tc-HDP radioactivity by GCPS [1,2]; and third, to mathematically calculate their size by pixelized measurement [4,5]. Microscopic 99m Tc-HDP deposits were easily formed in both large standard and small house-made dish phantoms, readily processed by GCPS and precisely calculated.…”

“…GC can be performed in any desk computer. On the other hand, the pixelized measurement, a recently developed quantitative calculation, can be used for the analysis of computed images [4,5]. We describe and discuss the methods and results.…”