BACKGROUND Myocardial perfusion imaging (MPI) has been used in the assessment of chagasic heart disease. OBJECTIVE To investigate the value of gated-single photon emission computed tomography (gated-SPECT) MPI to detect early cardiac involvement in chagasic patients in the indeterminate phase, who present segmental motion abnormalities detected by tissue Doppler imaging (TDI)-derived strain. ...

OBJECTIVES This study sought to describe a protocol for myocardial perfusion imaging using dipyridamole stress, with 128-slice dual-source computed tomography (CT), and to assess the ability of CT myocardial perfusion imaging (MPI) to detect abnormal flow reserve and infarction in comparison with nuclear MPI (NMPI). BACKGROUND CT MPI has not been previously described with the 128-slice dual-s...

Magnetic particle imaging (MPI) maps the spatial distribution of superparamagnetic iron oxide nanoparticles (SPIO) by leveraging the particles’ nonlinear magnetization response. In x-space image reconstruction, MPI images are spatially blurred as a result of the nature of this response, as well as nanoparticle relaxation effects. In this article, we present a deconvolution method for MPI based ...

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parallel computing is a topic of interest for a broad scientific community since it facilitates many time-consuming algorithms in different application domains.in this paper, we introduce a novel platform for parallel computing by using mpi and openmp programming languages based on set of networked pcs. umzhpc is a free linux-based parallel computing infrastructure that has been developed to cr...

Magnetic Particle Imaging (MPI) is a new biomedical imaging technique that produces real-time, high-resolution tomographic images of superparamagnetic iron oxide nanoparticle tracers. Currently, 25 kHz and 20 mT/μ0 excitation fields are common in MPI, but lower field amplitudes may be necessary for patient safety in future designs. Here, we address fundamental questions about MPI tracer magneti...

Several techniques have been applied for the assessment of severe congenital heart diseases (SCHD) including echocardiography, cardiac catheterization with angiocardiography, and more recently, cardiovascular multi detector tomography and magnetic resonance imaging (MRI). The value of gated single photon emission tomography (GSPET) myocardial perfusion imaging (MPI) and radionuclide ventricul...

Nuclear imaging has an established clinical role in the non-invasive diagnosis of coronary artery disease (CAD), allowing accurate patient stratification and allocation to the best form of treatment. Semi-quantitative assessment of regional myocardial perfusion with single-photon emission computed tomography (SPECT) is a noninvasive, robust, and widely available method of assessing myocardial i...

BACKGROUND Appropriate use criteria (AUC) have been developed to aid in the optimal use of single-photon emission computed tomography (SPECT)-myocardial perfusion imaging (MPI), a technique that is a mainstay of risk assessment for ischemic heart disease. The impact of appropriate use on the prognostic value of SPECT-MPI is unknown. METHODS AND RESULTS A prospective cohort study of 1511 conse...