Cardiac Displacement During 13N-Ammonia Myocardial Perfusion PET/CT: Comparison Between Adenosine- and Regadenoson-Induced Stress

Regadenoson Cardiac Stress Myocardial Perfusion Scintigraphy

Cardiovascular effects and tolerance of adenosine versus regadenoson during cardiac MRI perfusion testing

Background Patients referred to cardiac MRI (CMR) for suspicion of obstructive coronary artery disease typically undergo vasodilator stress testing using either adenosine or regadenoson. Both of these agents are effective and have been evaluated for stress testing in both the CMR and nuclear medicine setting but the cardiovascular physiologic effects of each of these agents have not been well s...

Myocardial perfusion reserve compared with peripheral perfusion reserve: A [13N]ammonia PET study

INTRODUCTION [13N]ammonia PET allows quantification of myocardial perfusion. The similarity between peripheral flow and myocardial perfusion is unclear. We compared perfusion flow in the myocardium with the upper limb during rest and adenosine stress [13N]ammonia PET to establish whether peripheral perfusion reserve (PPR) correlates with MPR. METHODS [13N]ammonia myocardial perfusion PET-scan...

Regadenoson stress induced wall motion abnormalities during cardiac MRI

Methods Patients underwent regadenoson CMR that included 3 (basal, mid, apical) slices of rest and peak stress real-time cines, with matching stress and rest first-pass perfusion, and late gadolinium enhancement (LGE) imaging. The reference standard for presence or absence of CAD was derived from invasive coronary angiography or coronary CT angiography (CTA). Invasive angiography established si...

Stress perfusion cardiac MRI with regadenoson and gadofoveset trisodium

Background Stress perfusion cardiac MRI (CMR) with a high relaxivity blood-pool contrast agent should allow for improved quantification of myocardial perfusion and myocardium blood volume in patients with coronary artery disease (CAD). In the current study, we sought to evaluate the diagnostic performance and image quality of stress perfusion CMR using the intravascular contrast agent gadofoves...