Problems of duodenogastric reflux in Tc-99m Hexa MIBI planar, tomographic and bull's eye display.

Tc-99m Hexa MIBI (RP-30) is excreted through hepatobiliary pathways. Myocardial imaging with RP-30 is recommended 45-60 minutes after injection. During this waiting period duodenogastric reflux (DGR) is occasionally seen. Fundal activity due to duodenogastrix reflux presents problems in planar, tomographic, and Bull's eye display. The authors recommend in those cases to give the patient a light meal and wait 15-30 minutes more for the gastric activity to empty in the small intestine before starting myocardial imaging.