Duodenogastric Reflux on 99mTc-Tetrofosmin Myocardial SPECT Mimics Left Ventricle Inferior Wall Reverse Redistribution and Falsely Decreases Ejection Fraction: A Case Report

Journal of Nuclear Medicine Technology

Patrick Donovan¹  Vickie Kieffer¹  Wei-Jen Shih¹ 

[1] Section of Cardiology, Medicine Service, and Nuclear Medicine Service, Lexington VA Medical Center, Lexington; and Department of Medicine and Nuclear Medicine Section, Department of Diagnostic Radiology, College of Medicine, University of Kentucky, Lexington, Kentucky Section of Cardiology, Medicine Service, and Nuclear Medicine Service, Lexington VA Medical Center, Lexington; and Department of Medicine and Nuclear Medicine Section, Department of Diagnostic Radiology, College of Medicine, University of Kentucky, Lexington, Kentucky Section of Cardiology, Medicine Service, and Nuclear Medicine Service, Lexington VA Medical Center, Lexington; and Department of Medicine and Nuclear Medicine Section, Department of Diagnostic Radiology, College of Medicine, University of Kentucky, Lexington, Kentucky

关键词: myocardial perfusion agents;    duodenogastric reflux;    reverse redistribution;    ^99mTc-tetrofosmin;   

DOI  :  

学科分类：医学（综合）

来源: Society of Nuclear Medicine

【 摘 要 】

99mTc-labeled myocardial perfusion agents are excreted through the hepatobiliary system and can be used in the evaluation of the duodenogastric reflux that occurs during routine cardiac imaging. The resultant gastric activity can overlap the inferior wall of the left ventricle (LV) and can thus mimic reverse redistribution of the LV inferior wall on dual-isotope SPECT. We report a case of significant gastric activity, which leads to abnormally low LV ejection fraction and akinesis of the LV wall in addition to the appearance of reverse redistribution. This case report illustrates that care should be taken in the performance and interpretation of 99mTc-tetrofosmin SPECT in the presence of duodenal reflux. This condition could be mistaken for reverse redistribution in the inferior wall of the LV with concomitant underestimation of the LV and regional wall motion.

【 授权许可】

Unknown