Abstract:
The heart is the pump responsible for maintaining adequate circulation of
oxygenated blood around the vascular network of the body. It is a four-
chamber pump, with the right side receiving deoxygenated blood from the
body at low pressure and pumping it to the lungs (the pulmonary circulation)
and the left side receiving oxygenated blood from the lungs and pumping it
at high pressure around the body (the systemic circulation), and the heart
itself supplied by Coronary arteries.This study was performed Alnilein
Medical Center of Nuclear Medicine Department-Khartoum for 146
Ischemic heart disease patients associated with CAO, in period between year
2011 to 2014. The main objective of this study was Characterization of
Coronary Artery Obstruction and Related Findings in Ischemic Heart
Patients Using Cardiac Scintigraphy. For the Single Photon Emission
Computed Tomography machine (SPECT) each imaged had been taken for
each single case with guidance of ECG trigger, prepared by fasting
overnight stopping any cardiac drug for 48 hours before imaging day, then at
scan day injected with (20 mci) of Tc99m-MIBI, then patient wait for 45
min to 1 hr, in an isolation room, meanwhile should eat a Fatty meal after
15-20 min of injection, finally undergone scanned with SPECT system with
ECG electrodes in his/her Chest region, the scan time is 17 min. The
scanned image will be saved in a computer till be processed in good quality
image. The data analyzed include upper, lower, right and left borders of the
heart. The result showed that The means of the total scores found were: at
rest = 12.9; after treadmill test = 19.3; after rehabilitation session = 15.1.
There were statistically significant differences among them. An individual
assessment showed that in 14 cases (53.8 %) hypo-uptake to some degree
was identified during rehabilitation and in 12 cases (46.6%) it was not.
Monitoring with the Holter system didn't show in any of the cases a ST
segment depression equal or greater than 1mm. in conclusion this study is
found to be very sensitive quantitative with adequate specificity for
diagnosis Ischemia. And strongly recommended to be the first diagnostic
line for such cases.
