The ability to select a discrete region within the body for signal acquisition is a fundamental requirement of in vivo NMR spectroscopy. Ideally, it should be possible to tailor the selected volume to coincide exactly with the lesion or tissue of interest, without loss of signal from within this volume or contamination with extraneous signals. Many techniques have been developed over the past 2...

This paper presents an approach to calculate the equivalent stray capacitance (SC) of n-turn of the helical flux compression generator (HFCG) coil with multi layer conductor wire filaments (MLCWF) in the form of rectangular cross-section. This approach is based on vespiary regular hexagonal (VRH) model. In this method, wire filaments of the generator coil are separated into many very small simi...

OBJECTIVE: To evaluate the usefulness of combining static and kinematic magnetic resonance imaging in the evaluation of the femoropatellar joint. MATERIALS AND METHODS: Twenty healthy volunteers (40 knees) and 23 patients (43 knees) were submitted to both static and kinematic magnetic resonance imaging on a 1.5 tesla whole-body magnetic resonance scanner. The knees were positioned at 30o flexio...

INTRODUCTION The use of magnetic fields to treat disease has intrigued mankind since the time of the ancient Greeks. More recently it has been shown that electromagnetic field (EMF) treatment aids bone healing, and repetitive transcranial magnetic stimulation (rTMS) appears to be beneficial in treating schizophrenia and depression. Since external EMFs influence internal body processes, we hypot...

The accumulation of static charge in polyethylene pipes gas network systems is a familiar process, which paid attention to mainly prevent accidents on pipelines. incidents related electricity can occur both during assembly works (coil tapping) and the operation pipelines (gas venting, etc.). Despite fact that repeated attempts study this process have been made by major operating organizations, ...

Modern Magnetic Resonance Imaging (MRI) systems permit parallel, spatial-encoded MRI (pMRI) and as such it is now possible to have up to 128 adjacent coil elements in a coil array [1]. Together with reduced imaging times, pMRI can significantly help to enhance the signal to noise ratio (SNR) over extended fields of view (FOV) [2]. However, a large number of channels subsequently create new tech...

It is expected to build a sustainable social system that uses “hydrogen” as fuel generate electricity without emitting CO2. To realize this, technology for storing large amount of hydrogen indispensable, and storage liquid ideal. However, the efficiency cooling device in temperature range around 20 K required long-term with low, equipment huge expensive, so it has not been established widely us...

We describe an experimental setup and the cooling procedure for producing 39K Bose-Einstein condensates of over 4 × 105 atoms. Condensation is achieved via a combination of sympathetic cooling with 87Rb in a quadrupole-Ioffe-configuration (QUIC) magnetic trap and direct evaporation in a large-volume crossed optical dipole trap, where we exploit the broad Feshbach resonance at 402 G to tune the ...

Introduction The growing availability of high-field whole body scanners has generated increasing interest in non-proton in vivo spectroscopy, and with it, multinuclear RF coil design. In most non-proton applications, simultaneous or sequential operation at the proton frequency is required as well; proton decoupling, scout imaging, and polarization transfer methods are cases where transmission/r...

M. W. DiFrancesco, W. Yuan, R. Pratt, S. Dunn, B. J. Dardzinski, S. K. Holland Imaging Research Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States Introduction Since the introduction of MRI for in vivo applications, there has been a trend toward the use of increasing static magnetic field strength. This is motivated by the belief that high field strength will i...