Scintigraphic Evaluation of Contractile and Coronary Reserve in Patients With Ischemic Cardiomyopathy

"After labeling of red blood cells in vivo, a sequential series of acquisition is carried out at rest and during increasing doses of dobutamine (5/10/15 μg / kg / min). The duration of acquisition is 300 seconds.~The acquisitions are carried out on dedicated cardiac gamma-camera with ultrafast Cadmium zinc telluride (CZT) detectors (DiscoveryNM530c, General electric Healthcare Israel, Israel)"

"The passage of a radiopharmaceutical bolus through the cavities of the heart and myocardium at rest and during infusion of adenosine at a dosage of 140 mcg / kg / min (for 4 minutes) is recorded.~At the peak of the stress test (after 2 minutes of administration of adenosine), a 5 ml bolus (dose 260-444 MBq) of 99mTc-methoxyisobutylisonitrile (MIBI) is administered at a rate of 1 ml / s. Immediately after the end of tracer administration, 30 ml of 0.9% sodium chloride (NaCl) is infused. A scintigraphic recording of the study begins 5 seconds before the administration of the radiopharmaceutical.~The next day, the study at rest is carried out. Scintigraphic images are recorded in tomographic mode with ECG synchronization for 600 s, at list mode.~The acquisitions are carried out on dedicated cardiac gamma-camera with ultrafast CZT detectors (DiscoveryNM530c, General electric Healthcare Israel, Israel)"