Introduction: Clinic hyperpolarized He gas human lung imaging has been widely conducted in recent years. Multi-channel coil designed for human lung parallel imaging has been reported [1] to accelerate the imaging speed. Large asymmetric birdcage coil were also developed to replace the single loop coil for better B1 homogeneity [2]. This work presents a design of a coil system for hyperpolarized...

Increasing evidence demonstrates the importance of long coiled-coil proteins for the spatial organization of cellular processes. Although several protein classes with long coiled-coil domains have been studied in animals and yeast, our knowledge about plant long coiled-coil proteins is very limited. The repeat nature of the coiled-coil sequence motif often prevents the simple identification of ...

The Levitated Dipole Experiment (LDX) explores the physics of high-temperature plasmas confined by a dipole magnetic field. Stable high-beta plasma has been created and confined by the magnetic field of a superconducting coil. Discharges containing trapped electrons form when microwaves cause strong perpendicular heating at cyclotron resonance. To eliminate the losses to the supports, the magne...

[Introduction] When a radio frequency (RF) coil is designed and built for MR imaging, its performance is judged on the basis of achieving uniform imaging B1field and high signal-to-noise ratio (SNR). However, there is an intrinsic trade-off between B1-field uniformity and high SNR in the configuration of RF coil; a large RF coil tends to generate a more uniform B1-field but lower SNR, because i...

The Levitated Dipole Experiment (LDX) is an innovative approach to explore the magnetic confinement of fusion plasmas. A superconducting solenoid (floating coil) is magnetically levitated for up to 8 hours in the center of a 5-meter diameter vacuum vessel. This coil is supported by a Levitating Coil (L-Coil) on top of the vacuum vessel. In the initial machine design, this Levitating Coil was a ...

INTRODUCTION The purpose of this study was to demonstrate the feasibility and efficiency of cardiac MR at 3 Tesla using local four-channel RF coil transmission and benchmark it against large volume body RF coil excitation. METHODS Electromagnetic field simulations are conducted to detail RF power deposition, transmission field uniformity and efficiency for local and body RF coil transmission....

In this work, we propose and investigate a volume coil array design method using different types of birdcage coils for MR imaging. Unlike the conventional radiofrequency (RF) coil arrays of which the array elements are surface coils, the proposed volume coil array consists of a set of independent volume coils including a conventional birdcage coil, a transverse birdcage coil, and a helix birdca...

Undesirable detachment or stretching of coils within the parent artery during aneurysm embolization can be related with thrombus formation, which can be caused occlusion of parent artery or embolic event(s). To escape from this situation, several rescue methods have been reported. A case with undesirably stretched coil in which another rescue method was used, is presented. When the stretched co...

Wireless power transmission technology based on coil coupling has been widely applied in various fields. However, the performance of system is affected by malposition coil-couple, which inevitable wireless (WPTS). In this study, a multi-transmitter array proposed to build more uniform magnetic flux density for WPTS, intending enhance WPTS case coil-couple malposition. The model built and differ...