Angular variation of scattering volume and its implications for Compton scattering tomography

被引：12
|
作者：
Balogun, FA [1 ]
机构：
[1] Obafemi Awolowo Univ, Ctr Energy Res & Dev, Ile Ife, Nigeria
来源：
APPLIED RADIATION AND ISOTOPES | 1999年 / 50卷 / 02期
关键词：
Compton scattering; volume; field of view; tomography;
D O I：
10.1016/S0969-8043(98)00015-3
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
If quantitative and qualitative precision is to be achieved in X-ly-rays Compton scattering densitometry and tomography, the volume of interaction within which a useful signal is collected must be well defined and accurately estimated. This work presents a numerical study of the variation of scattering angles and collimator sizes. The effect of choosing back-scattering angles for measurement in both the densitometry and tomographic modes of this technique is studied. A symmetry is observed between the volume at forward and back scattering angles. A symmetry exists, however, within the scattering angle range 90 +/- 30 degrees. It is proposed that the best volume/spatial resolution in Compton scattering densitometry/tomography is obtainable within the above mentioned scattering angle range. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：317 / 323
页数：7
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