Background Myocardial CT perfusion is a relatively new technique which enables the assessment of perfusion deficits through first pass imaging in combination with pharmacological stress. Comparison of CT and MR perfusion has been limited and in-vivo assessment is affected by physiological variability, acquisition timing during firstpass contrast perfusion and parameter selection. We utilized a ...

introduction: we investigated the difference in left ventricular ejection fraction (lvef) and end-systolic volume(esv) measured by gated myocardial perfusion spect (gspect) in the post-dipyridamole stress and rest periods, and compared the results with the perfusion patterns found in the conventional non-gated tomograms. methods: 297 consecutive patients were studied with post-stress and rest 9...

BACKGROUND Myocardial perfusion gated single photon emission computed tomography (SPECT) can be used for non-invasive detection of coronary artery stenosis and cardiac allograft vasculopathy (CAV), which is a crucial factor for the long-term survival of heart transplant (HTx) recipients. A frequently observed finding in myocardial perfusion imaging of patients after HTx is inhomogeneous myocard...

METHODS: The study population consisted of 80 patients (64 men and 16 women, mean age = 67.5¡6.6 years) with thrombolysis in myocardial infarction 0/1 flow pre-procedurally. The patients were divided into two groups according to thrombolysis in myocardial perfusion grades that were assessed immediately following primary percutaneous coronary intervention. The two groups (group 1 and group 2) ea...

Since the introduction of reperfusion therapy in the early 1980s, cardiologists have largely focused on coronary artery flow and diameter, with the goal being to restore normal epicardial artery perfusion and large lumens. For many years, epicardial coronary flow has been simply assessed by the TIMI (thrombolysis in myocardial infarction) flow grade. This semiquantitative coronary angiographic ...

AIM Our aim was to evaluate whether there was a relationship between mean platelet volume and myocardial perfusion defect in diabetic patients using myocardial perfusion imaging. METHODS Forty-four diabetic patients with myocardial perfusion defect (group 1) and 44 diabetic patients without myocardial perfusion defect (group 2), matched for age and gender, were retrospectively examined. Level...

Endothelin-1 is a powerful coronary vasoconstrictor that is overexpressed in coronary artery disease. Adenosine is a powerful coronary vasodilator used for myocardial perfusion imaging to identify flow-limiting coronary artery stenosis. Therefore, in an animal model we tested the hypothesis that intracoronary endothelin-1 may cause myocardial perfusion abnormalities by positron emission tomogra...