Retention of Tc-99m ECD in delayed SPECT of the brain

被引：6

作者：

Flores, LG ^{[1
]}

Jinnouchi, S ^{[1
]}

Nagamachi, S ^{[1
]}

Ohnishi, T ^{[1
]}

Futami, S ^{[1
]}

Nakahara, H ^{[1
]}

Shimoshinbara, S ^{[1
]}

Ushinbana, K ^{[1
]}

Tamura, S ^{[1
]}

机构：

[1] Miyazaki Med Coll, Dept Radiol, Kiyotake, Miyazaki 8891692, Japan

来源：

ANNALS OF NUCLEAR MEDICINE | 1999年 / 13卷 / 01期

关键词：

Tc-99m ECD; SPECT; retention rate;

D O I：

10.1007/BF03165420

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

We determined the effect of retention on the changes in regional biodistribution of Tc-99m ECD in the brain. A total of 14 cases, 7 normal volunteers and 7 patients with various diagnoses but with very minimal radiologic findings or none were included in the study. SPECT images were taken at 30 min, 1, 2, 3, 4 and 6 hrs after an intravenous injection. Retention rates were calculated in various regions and were corrected according to the time decay of technetium. There was a tendency for the retention rate to increase up to three hours of imaging and then a decrease was noted in most regions of the brain. In the thalamus, increasing retention was noted. In conclusion, Tc-99m ECD retention in the different regions of the brain varies with time. These differences should always be considered when planning and interpreting SPECT quantitative studies.

引用

页码：1 / 4

页数：4

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