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We list hundreds of Clinical Trials about "Coronary angiography Myocardial perfusion imaging Coronary Artery Disease" on BioPortfolio. We draw our references from global clinical trials data listed on ClinicalTrials.gov and refresh our database daily.
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The purpose of this study is to determine whether coronary artery CT scanning or nuclear stress testing is better at diagnosing chest pain patients with known coronary artery disease to select appropriate candidates for coronary catheterization and re-vascularization.
The purpose of this study is to evaluate the diagnostic accuracy of multi-detector computed tomography using 320 detectors for identifying the combination of coronary artery stenosis ≥ 50% and a corresponding myocardium perfusion defect in a patient with suspected coronary artery disease compared with conventional coronary angiography and single photon emission computed tomography myocardium perfusion imaging.
Coronary artery disease (CAD, coronary heart disease) is the leading cause of death in the U.S., causing 1 in 5 deaths in 2005. The current method for diagnosing coronary artery disease that is considered most accurate is coronary angiography however it involves risk and radiation. Alternatively nuclear imaging test and MRI stress test only permits the semi qualitative analysis of the myocardial perfusion images. In this proposal the investigators will develop a means to calcu...
The purpose of this study is to determine whether coronary artery CT scanning or nuclear stress testing is better at diagnosing chest pain patients with coronary artery disease to select appropriate candidates for coronary catheterization and re-vascularization.
To exam the feasibility and accuracy of RTPE during vasodilator stress with 400micrograms of the A2A Receptor agonist Regadenoson for detection of significant coronary artery disease (CAD) in patients scheduled to undergo coronary angiography. Sensitivity, specificity , and accuracy of perfusion and wall motion analysis to identify a coronary stenosis> 50% in diameter by quantitive angiography will be analyzed
The new cadmium-zinc-telluride (CZT) technology is a powerful tool for cardiac nuclear medicine. The increased photon counting sensitivity of camera can be used to explore novel protocols like dual isotope (rapid stress Tl-201/rest Tc-99m protocol for use with high-speed SPECT MPI). The use of dual isotope imaging is very interesting because this imaging combines the use of thallium-201 with technetium-99m agents permitting optimal image resolution and simultaneous assessment o...
Patients with suspected or known coronary artery disease who are scheduled for clinically indicated SPECT myocardial perfusion imaging (MPI) and will receive invasive coronary angiogram are recruited to receive SPECT MBF study.
The overall goal of this study is to determine if non-invasive imaging with state of the art CT coronary angiography can be used to screen for coronary artery disease in high risk patients prior to liver and lung transplantation. The current protocol for coronary artery disease assessment at UCSF before liver and lung transplantation involves screening with stress tests and/or coronary angiograms in patients with increased risk of coronary artery disease. Coronary angiogram wil...
The purpose of this study is to evaluate the potential benefit of systematic preoperative coronary angiography followed by selective coronary artery revascularization on the incidence of myocardial infarction (MI) in patients without a history of coronary artery disease (CAD) and undergoing carotid endarterectomy (CEA).
This study investigates hypothesizes that the combination of dobutamine stress echocardiography with dobutamine stress echocardiography with real time perfusion myocardial contrast echocardiography and coronary computed tomography is a better modality for detecting coronary artery disease in end-stage renal disease patients than coronary angiography, and in predicting patient outcomes. Demonstrating this would lead to increased use of DSE with RTCE and coronary CT at kidney tr...
The purpose of this study is to compare pharmacologic stress myocardial perfusion PET with pharmacologic stress myocardial perfusion SPECT in a near-simultaneous, head-to-head comparison in the same patient. The investigators hypothesize that pharmacologic stress myocardial perfusion PET will prove superior to pharmacologic stress myocardial perfusion SPECT as a first-line diagnostic test for higher-risk patients with known coronary artery disease (CAD) who present with sympto...
Current guidelines for the diagnosis and management of patients with stable coronary artery disease (CAD) strongly support the performance of non-invasive imaging techniques for the detection of myocardial ischemia prior to revascularization procedures. This recommendation originates from the strong evidence base showing the lack of prognostic benefit from percutaneous coronary interventions (PCI) over optimal medical therapy in patients without verification of myocardial ische...
1) Establish normal value for coronary calcium scoring in Taiwan. 2) Find out the relationship of coronary calcium deposition and coronary artery stenosis. Propose a clinical management guideline based on coronary calcium score. 3) Evaluate sensitivity/specificity of coronary CT angiography and the influence of coronary calcium score on coronary CT angiography. 4) Evaluate the clinical application of myocardial enhancement measurement.
This study aims at evaluating the feasibility of CT myocardial perfusion imaging in daily clinical practice and compare it to SPECT perfusion imaging in order to assess sensitivity and specifity of CT myocardial perfusion imaging compared to SPECT.
The aim of the study is to evaluate and compare the value of 5 different non-invasive diagnostic methods in patients with chest pain suspected for coronary artery disease. The investigators intend to include 200 patients over a 3 year period in the study. The participants will be recruited from patients referred to coronary angiography at the institution. Before the angiography the participants will (1) test the effect of sublingual Nitroglycerin, (2) give their medical history...
To compare the efficacy of 16-row multi-detector CT (MDCT) with standard myocardial perfusion imaging in detecting coronary artery disease (CAD) in patients without a previously established diagnosis of CAD.
This study was designed to evaluate the ability of AI-700-enhanced rest-stress echocardiography to detect coronary artery disease (CAD) in patients with suspected ischemic heart disease who are indicated for coronary angiography.
The purpose of this study is to determine the diagnostic accuracy of MPICT for the detection of hemodynamically relevant coronary stenosis (as determined by invasive FFR) in patients with suspected or known CAD clinically referred for invasive angiography.
The purpose of this study is to better define the role of a comprehensive stress MRI (which includes myocardial perfusion imaging, optimized coronary imaging, and myocardial scar imaging) in medical practice and in patient health management. Information gathered from the healthy volunteers that participate in this study will be compared to information from the coronary artery disease patients in this study in order to help further our understanding.
Myocardial perfusion imaging is an efficient tool to assess the risk of major cardiac events for patients with known or suspected coronary artery disease. If the test is normal, or if the abnormalities of perfusion represent less than 10% of the left ventricle myocardium, the patient is considered at low risk and should be managed with optimal medical treatment only. Recently, new gamma cameras using semi-conductor detectors have been developed. Their diagnostic performances h...
This study aims at combining inspiration breath-hold myocardial perfusion SPECT with coronary CT angiography.
To determine whether an impairment of myocardial perfusion reserve is an early indicator of coronary artery disease.
The purpose of this study is to evaluate the prevalence and morphological features of coronary plaques by means of OCT in patients with acute myocardial infarction but without any significant coronary stenosis at coronary angiography. In addition, cardiac magnetic resonance imaging (CMR) will be performed to assess the prevalence, location, and pattern of myocardial injury as well as other concomitant findings. As a secondary analysis, the association between the distribution a...
Adenoscan® (adenosine) is an approved pharmacological stress agent indicated as an adjunct to thallium-201 myocardial perfusion scintigraphy in patients unable to exercise adequately. The investigational drug, regadenoson (CVT-3146) is a selective A2A adenosine receptor agonist, the receptor responsible for coronary vasodilation, and is being studied for potential use as a pharmacologic stress agent in myocardial perfusion imaging (MPI) studies. This study will compare the s...
The primary objective of this study is to analyze the clinical value of a therapeutic management strategy based on the results of coronary CT angiography and functional MRI. The clinical value of CT and MRI will be analyzed in patients with suspected coronary artery disease.