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

页码：1577 / 1584

页数：8

共 16 条

[1] MONTE-CARLO TECHNIQUES IN MEDICAL RADIATION PHYSICS [J].