Background Multi-slice CINE MRI is an integral facet of postnatal cardiac examinations, but its application to the fetal heart is hampered by the lack of a fetal cardiac gating signal and the possibility of fetal motion. In this work, a method for reconstructing high spatial and temporal resolution multi-slice images of the fetal heart in a clinically acceptable scan time is presented. The prop...

Background The electrocardiogram (ECG) is important for gating purposes in cardiac magnetic resonance imaging (CMR). However, the magnetohydrodynamic (MHD) effect, which is caused by the flow of blood in the static magnetic field, makes it difficult to record clean ECG signals for gating. The vectorcardiogram (VCG), which can be derived from the ECG signal, is commonly used for gating purposes ...

in this paper, we review novel techniques in the emerging field of spatiotemporal 4d pet imaging. we will discuss existing limitations in conventional dynamic pet imaging which involves independent reconstruction of dynamic pet datasets. various approaches that seek to attempt some or all of these limitations are reviewed in this work, including techniques that utilize iterative temporal smooth...

The gating pore current, also called omega current, consists of a cation leak through the typically nonconductive voltage-sensor domain (VSD) of voltage-gated ion channels. Although the study of gating pore currents has refined our knowledge of the structure and the function of voltage-gated ion channels, their implication in cardiac disorders has not been established. Two Na(v)1.5 mutations (R...

Fetal cardiac MRI is a rapidly evolving form of diagnostic testing with utility as complementary imaging modality for the diagnosis congenital heart disease and assessment fetal cardiovascular system. Previous technical limitations without gating rate has been overcome recent technology. There potential electrocardiography direct gating. In addition to anatomic assessment, innovative technology...

Background In routine cardiac MRI (CMRI) practice, radiological technologists are expected to optimize and utilize EKGs in gating and physiological monitoring. Many cardiac sequences are critically dependent on heart rate and rhythm and EKG gating problems lead to poor or nondiagnostic images. The technologist’s syllabus does not routinely include formal EKG recognition or CMRI trouble-shooting...

  In this paper, we review novel techniques in the emerging field of spatiotemporal 4D PET imaging. We will discuss existing limitations in conventional dynamic PET imaging which involves independent reconstruction of dynamic PET datasets. Various approaches that seek to attempt some or all of these limitations are reviewed in this work, including techniques that util...

Gated multi-detector CT (MDCT) is now recognised as an excellent and robust application for non-invasive assessment of coronary arteries, and in many centres is routinely used. Some studies have shown that MDCT scanners with 64-detector row have a 99% negative predictive value for the detection of coronary artery stenosis. MDCT images obtained with ECG gating are superior to the standard (non-E...