Introduction The tissue concentration of sodium is sensitive to disease as an indicator of cellular and metabolic integrity [1]. Due to the low 23Na MR signal level, however, relatively long scan times are required. Furthermore, an additional 1H image in needed for an anatomic co-registration. In this context, a truly simultaneous acquisition of the 23Na and 1H signal would be helpful to reduce...

INTRODUCTION: Quadrature or circularly polarized (CP) coils are desired in MR experiments due to their improved MR sensitivity (by 40%) and reduced excitation power (by half) compared with linear coils. This is particularly true in parallel imaging and parallel excitation where the reception/excitation acceleration demands highly efficient receive and transmit. Conventionally quadrature coils a...

A 69-year-old woman developed hydrocephalus after the embolization of an incidentally detected unruptured large internal carotid artery aneurysm with bare platinum coils. Endovascular embolization resulted in near-total aneurysm occlusion. She complained of mild headache 18 hours after the procedure and magnetic resonance (MR) imaging performed on the 6(th) post-treatment day revealed wall enha...

Radiofrequency (RF) coils are used to transmit and receive signals in magnetic resonance (MR) systems. Optimized RF coil design has take into account strategies maximize the performance by choosing sizes geometry for achieving best signal-to-noise ratio (SNR). In particular, conductor radiative loss contributions strongly affect SNR value, with first mainly playing a role low-field MR systems e...

The topic of this paper is the parts modern MR devices, which contain magnet coils. scanner magnets are made four types electromagnetic coils: 1) Main magnet, superconducting material. main an (Magnetic Resonance Imaging) creates a strong and uniform magnetic field around patient being scanned. This typically in range 0.5 to 3 Tesla used align moments hydrogen atoms patient's body. superconduct...

Introduction Myocardial Delayed Enhancement (MDE) MR imaging has been used for visualization of myocardial scar tissue created due to radio-frequency ablation (RFA) of the left atrium for the treatment of atrial fibrillation [1,2]. After administration of gadolinium-DTPA contrast, ECG-gated 3D-MDE is performed with an inversion-recovery preparatory pulse, followed by a segmented k-space gradien...

Perform It Better Rabbits are among the most widely used animals in experimental studies in basic and clinical medical sciences. MR images may also be coupled with the studies of rabbits and may provide important clues to the researchers. Several coils and parameters may be implemented for experimental MR imaging of the rabbit brain, but because of the small size of this brain, the image qualit...