AN EVALUATION OF POST-INJECTION TRANSMISSION MEASUREMENT IN PET

被引：10

作者：

TURKINGTON, TG ^{[1
]}

COLEMAN, RE ^{[1
]}

SCHUBERT, SF ^{[1
]}

GANIN, A ^{[1
]}

机构：

[1] GE CO,MED SYST,PET ENGN,MILWAUKEE,WI 53201

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 1994年 / 41卷 / 04期

基金：

美国国家卫生研究院;

关键词：

D O I：

10.1109/23.322945

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：

PET transmission scanning in the presence of emission activity has been investigated on two scanners with orbiting pin transmission sources. One phantom consisting of varying sized spherical inserts in a uniform background and another containing simulated lungs and spine, a myocardium insert, and uniform background were imaged at various emission activity levels. Insert radioactivity concentration levels varied up to 3.5 muCi/mL. Transmission acquisition were performed with the phantoms aligned with the emission scan position, and with the phantoms shifted to simulate patient motion between scans. Images were reconstructed with and without compensation for the emission contamination. Qualitative and quantitative evaluation of the resulting image sets was performed. The emission correction resulted in no visible artifacts and approximately 3% quantitative accuracy.

引用

页码：1538 / 1544

页数：7

共 7 条

[1]

Carroll LR, 1983, EMISSION COMPUTED TO, P235

[2]

CARSON RE, 1988, J NUCL MED, V29, P1558

[3] UNIFIED DEADTIME CORRECTION MODEL FOR PET [J].