نتایج جستجو برای: stress rest mpi
تعداد نتایج: 518342 فیلتر نتایج به سال:
OBJECTIVE To test the hypothesis that, in the initial evaluation of patients with suspected coronary artery disease (CAD), stress myocardial perfusion imaging (MPI) would result in less downstream testing than coronary computed tomographic angiography (CCTA). METHODS In this international, randomized trial, mildly symptomatic patients with an intermediate likelihood of having CAD, and asympto...
Background Changes in global and regional wall motion between rest and stress are important prognostic markers, uncommonly observed with vasodilator stress radionuclide myocardial perfusion imaging (MPI). Cardiac MRI (CMR) with tagging has the potential to more precisely quantify normal and abnormal ventricular wall motion responses. We herein report CMR findings in 5 very low-likelihood patien...
Introduction: Percutaneous transluminal coronary angioplasty (PTCA) is an effective method for revascularizing of stenotic coronary vessels. Lack of response to this treatment, either in symptomatic or asymptomatic patients, is usually due to incomplete revascularization, restenosis, and/or irreversibility of myocardial perfusion. Introduction of a noninvasive metho...
UNLABELLED Rotenone derivatives have shown promise in myocardial perfusion imaging (MPI). CMICE-013 is a novel (123)I-labeled rotenone derivative developed for SPECT MPI. The objective of this study was to assess the image quality of CMICE-013 and compare its uptake with tetrofosmin, sestamibi, and (201)Tl in vivo in a porcine model of stress-induced myocardial ischemia. METHODS Microspheres ...
Heart disease is the leading cause of death. Each year in the United States, more than 500,000 men and women die from coronary artery disease (CAD). CAD results from the narrowing of blood vessels that supply the heart. The blood vessels become narrow when fatty deposits build up inside the arterial wall. When the arteries become clogged, the blood flow to the myocardium is impaired and a heart...
UNLABELLED A triple-detector, multipinhole SPECT system was optimally configured to perform simultaneous (201)Tl (stress)/(99m)Tc (rest) myocardial perfusion imaging (MPI) using a protocol that permitted direct diagnostic comparison of this multipinhole SPECT system with conventional rotational SPECT. METHODS Both the rotational and the multipinhole SPECT systems used the same model gamma-det...
BACKGROUND Stress nuclear myocardial perfusion imaging (MPI) is an established method for diagnosis and prognosis of coronary artery disease (CAD). However, radiation exposure limits its clinical application. Magnetocardiography (MCG) has been proposed as a non-contact, rapid and non-radiation technique with high reproducibility. The aim of the study was to evaluate the diagnostic efficacy of r...
BACKGROUND Acute rest single-photon emission computed tomography-myocardial perfusion imaging (SPECT-MPI) has high predictive value for acute coronary syndrome (ACS) in emergency department patients. Prior studies have shown excellent agreement between rest/stress computed tomography perfusion (CTP) and SPECT-MPI, but the value of resting CTP (rCTP) in acute chest pain triage remains unclear. W...
On the basis of some new evidences in favor of delayed (99m)Tc methoxy-isobutyl-isonitrile ((99m)Tc-MIBI) redistribution, doubts about the appropriate time of acquisition following radiotracer injection may be raised. The goal of this study was to find the best acquisition time at stress and rest phases to achieve the highest sensitivity and normalcy rate for (99m)Tc-MIBI SPECT. Ninety four pat...
BACKGROUND Ischemic burden observed during stress testing has been postulated to predict prognosis irrespective of anatomic atherosclerotic burden observed on angiography. However, it is not known if the stress test result influences the long-term prognosis of subjects with diffuse coronary artery disease. We sought to determine the prognostic importance of stress test false negativity amongst ...
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