MONTE-CARLO SIMULATION OF TRANSMISSION STUDIES USING A PLANAR SOURCE WITH A PARALLEL COLLIMATOR AND A LINE SOURCE WITH A FAN-BEAM COLLIMATOR

被引：8
|
作者：
LJUNGBERG, M [1 ]
STRAND, SE [1 ]
RAJEEVAN, N [1 ]
KING, MA [1 ]
机构：
[1] UNIV MASSACHUSETTS,MED CTR,WORCESTER,MA 01605
来源：
IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 1994年 / 41卷 / 04期
关键词：
D O I：
10.1109/23.322952
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A knowledge of the distribution of the attenuation coefficient is generally required for a successful correction of attenuation in nonhomogeneous regions. This can be accomplished by performing transmission measurement with either parallel or fan-bean collimation. The Monte Carlo method makes it possible to fully evaluate the results of such a correction. This study shows results from such simulations for both parallel and fan-beam transmission imaging. Also, examples of the effect of down-scatter from an emission Tc-99m radionuclide into the energy window for a transmission Gd-153 radionuclide are shown.
引用
收藏
页码：1577 / 1584
页数：8
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