نتایج جستجو برای: myocatrdial persfuion imaging mpi

تعداد نتایج: 464574  

2018
Harald Kratz Matthias Taupitz Angela Ariza de Schellenberger Olaf Kosch Dietmar Eberbeck Susanne Wagner Lutz Trahms Bernd Hamm Jörg Schnorr

Synthesis of novel magnetic multicore particles (MCP) in the nano range, involves alkaline precipitation of iron(II) chloride in the presence of atmospheric oxygen. This step yields green rust, which is oxidized to obtain magnetic nanoparticles, which probably consist of a magnetite/maghemite mixed-phase. Final growth and annealing at 90°C in the presence of a large excess of carboxymethyl dext...

Journal: :European Journal of Echocardiography 2023

Abstract Funding Acknowledgements Type of funding sources: None. Introduction Data supporting the role stress test myocardial perfusion imaging (MPI) before non-cardiac surgery (NCS) are sparse and out date. In particular, there is no specific evidence on use cardiac magnetic resonance (sCMR) in this setting. The aim present study was to evaluate impact MPI with sCMR single-photon emission comp...

Journal: :JACC. Cardiovascular imaging 2009
Raymond J Gibbons Panithaya Chareonthaitawee

In the last decade, positron emission tomography (PET) myocardial perfusion imaging (MPI) has emerged as a valuable clinical tool for the management of patients with known or suspected coronary artery disease (CAD). Compared with singlephoton emission computed-tomography (SPECT), PET provides higher-quality images and superior diagnostic accuracy (1). Increased availability of PET scanners, Med...

2013
Mark Doyle Gerald M Pohost Leslee J Shaw Diane A Vido Sheryl F Kelsey BD Johnson William J Rogers Geetha Rayarao Barry L Sharaf Carl J Pepine Noel B Merz Robert W Biederman

Background We previously introduced a model-based approach (Decisions Informed by Computed Entities [DICE]), a mathematical form of Artificial Intelligence (AI) to improve prognostic values of quantitative myocardial perfusion imaging (MPI). When DICE was applied to cardiovascular MRI (CMR) it improved prediction of MACE in women with suspected ischemic heart disease (IHD) compared to the conve...

2009
Jürgen Rahmer Jürgen Weizenecker Bernhard Gleich Jörn Borgert

BACKGROUND Magnetic particle imaging (MPI) is a new tomographic imaging technique capable of imaging magnetic tracer material at high temporal and spatial resolution. Image reconstruction requires solving a system of linear equations, which is characterized by a "system function" that establishes the relation between spatial tracer position and frequency response. This paper for the first time ...

Journal: :The Turkish journal of pediatrics 2012
Sevcan Erdem Nazan Ozbarlas Osman Küçükosmanoğlu Hakan Poyrazoğlu Orhan Kemal Salih

The aim of this study was to evaluate the mid-term clinical status of patients following tetralogy of Fallot (TOF) repair. We performed a cross-sectional observational analysis of 57 postoperative TOF patients and 58 age-matched controls. Patients were examined with myocardial performance index (MPI), which was obtained by tissue Doppler imaging (TDI) in addition to the conventional methods. Co...

2012
Mansour Almoudi Zhong-Hua Sun

OBJECTIVES The coronary artery calcium (CAC) score has been shown to predict future cardiac events. However the extent to which the added value of a CAC score to the diagnostic performance of myocardial perfusion imaging (MPI) by single photon emission computed tomography (SPECT) is unclear. The purpose of this study is to investigate the correlation between CAC score and SPECT in patients with...

2017
David E Winchester Carsten Schmalfuss Christian D Helfrich Rebecca J Beyth

OBJECTIVE Investigations of Appropriate Use Criteria (AUC) education have shown a mixed effect on changing provider behaviour. At our facility, rarely appropriate myocardial perfusion imaging (MPI) differs by specialty; awareness of AUC is low. Our objective is to investigate if specialty-specific, multimodality education could reduce rarely appropriate MPI. METHODS We designed education focu...

2015
David E. Winchester Pengcheng Zhang Manoj P. Jadhav Rebecca J. Beyth Vitarelli. Antonio

Myocardial perfusion imaging (MPI) is commonly used to detect ischemia. Concerns about silent ischemia may encourage orders for MPI in asymptomatic patients. Factors contributing to this practice are poorly described and the clinical utility is questionable.We conducted a single center retrospective cohort investigation on Veterans who underwent MPI between December 2010 and July 2011. We gathe...

Journal: :Acta Cardiologica Sinica 2014
Yen-Wen Wu Lung-Chun Lin Wei-Kung Tseng Yen-Bin Liu Hsian-Li Kao Mao-Shin Lin Huei-Chun Huang Shan-Ying Wang Herng-Er Horng Hong-Chang Yang Chau-Chung Wu

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...

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