Ellipsoidal Coil for Magnetic Resonance Spectroscopy

Hernandez, R.; Rodriguez, A.O.; Salgado, P.; Barrios, F.A.
September 2003
AIP Conference Proceedings;2003, Vol. 682 Issue 1, p205
Academic Journal
We developed an ellipse-shaped surface coil for magnetic resonance spectroscopy for a 1.5 T clinical MR Imager. This coil is to be used to obtain spectra from arms and legs. Standard volume and single-loop coils provide a poor signal because they can not be placed close to the region of interest and their shapes do not fit the anatomy of human extremities. The coil design proposed has more anatomical shape which allows to be placed closer to the region of interest. A higher signal-to-noise ratio can then be achieved resulting in better-quality spectra. Spectra from a phantom and from the arm of a healthy volunteer were acquired to show viability. A 1.5 T clinical scanner (Signa LX equipped with V. 5.8, General Electric Medical System) together with standard spin-echo sequences were used to perform all the spectroscopy experiments. This receiver coil can generate high resolution MR spectra of a spectroscopy phantom and is fully compatible with clinical magnetic resonance systems and standard pulse sequences. © 2003 American Institute of Physics


Related Articles

  • Magnetic Resonance Coils for Magnetic Resonance Imaging Scanners. Volke, Frank // Medical Device Technology;Oct2003, Vol. 14 Issue 8, p30 

    Examines developments in magnetic resonance imaging (MRI). Components of an MRI system; Innovations in coil capabilities; Alternative contrast agents developed for MRI; Features of microcoils.

  • Analysis from a stimulation perspective of the field patterns of magnetic resonance imaging... Nyenhuis, J.A.; Bourland, J.D. // Journal of Applied Physics;4/16/1997, Vol. 81 Issue 8, p4314 

    Analyzes the field patterns of magnetic resonance imaging gradient coils from a stimulation perspective. Comparison of potential for peripheral nerve stimulation for different coil geometries; Consideration of z gradient coils and transverse gradient coils.

  • Optimization of gradient coils using the fast simulated annealing method. Panepucci, H.; Tomasi, D.; Caparelli, E. C.; Foerster, B.; Tannu´s, A.; Vidoto, E. L.; Xavier, RF // AIP Conference Proceedings;2000, Vol. 538 Issue 1, p134 

    This work presents a method to design short self-shielded gradient coils of cylindrical geometry using optimized stream functions (SF). The longitudinal and transverse gradient coil layouts presented here are optimized by the fast simulated annealing of the SF to increase the homogeneity of the...

  • Development of a 7 T Experiment System for Superconducting Switch Test. Ma, W.; Zhao, L.; Zhang, G.; Ning, F.; Zhu, Z. // Journal of Superconductivity & Novel Magnetism;Jul2011, Vol. 24 Issue 5, p1803 

    7 T experiment system, which was designed for a MRI superconducting switch test, has been developed at the Institute of High Energy Physics (IHEP) of China. The system mainly consists of a 7 T background superconducting coil, two pairs of 800 A vapor cooled current leads, a data acquisition...

  • Efficient Gradient Coil Driver for MRI. Bauer, P.; Spanjaard, S.; Ferreira, J. A.; Hollander, M. // International Review of Electrical Engineering;Mar/Apr2007, Vol. 2 Issue 2, p217 

    In a Magnetic Resonance Imager, or MRI device, so called 'gradient coils' are used for generating time and place dependent magnetic field pulses. The current pulses through this mainly inductive component should preferably be block shaped. Because block shaped current pulses require infinite...

  • Development of a compact magnetic resonance imaging system for a cold room. Adachi, Satoru; Ozeki, Toshihiro; Shigeki, Ryosuke; Handa, Shinya; Kose, Katsumi; Haishi, Tomoyuki; Aoki, Masaaki // Review of Scientific Instruments;May2009, Vol. 80 Issue 5, p054701 

    A compact magnetic resonance imaging (MRI) system for a cold (-5 °C) room has been developed to acquire MR images below the freezing point of water. The MRI system consists of a 1.0 T permanent magnet, a higher-order shim coil set, and a gradient coil probe, installed in the cold room, and a...

  • Newly developed surface coil for endoluminal MRI, depiction of pig gastric wall layers and vascular architecture in ex vivo study. Morita, Yoshinori; Kutsumi, Hiromu; Yoshinaka, Hayato; Matsuoka, Yuichiro; Kuroda, Kagayaki; Gotanda, Masakazu; Sekino, Naomi; Kumamoto, Etsuko; Yoshida, Masaru; Inokuchi, Hideto; Azuma, Takeshi // Journal of Gastroenterology;2009, Vol. 44 Issue 5, p390 

    The purpose of this study was to visualize the gastric wall layers and to depict the vascular architecture in vitro by using resected porcine stomachs studied with high-spatial resolution magnetic resonance (MR) imaging. Normal dissected porcine stomach samples ( n = 4) were examined with a 3...

  • Mid-Range Coil Array for Magnetic Resonance Imaging of Small Animals. Solis, S. E.; Tomasi, D.; Rodríguez, A. O. // AIP Conference Proceedings;8/11/2008, Vol. 1032 Issue 1, p157 

    The vast majority of articles on MRI RF coils over the past two decades have focused on large coils, where sample losses dominate, or on micro-coils, where sample and capacitor losses are negligible. Few have addressed the mid-range coils, seen in the majority of small-animal applications, where...

  • An Antenna-Theory Method for Modeling High-Frequency RF Coils: A Segmented Birdcage Example. Xin Chen; Taracila, Victor; Eagan, Timothy; Fujita, Hiroyuki; Xingxian Shou; Baig, Tanvir; Brown, Robert // International Journal of Antennas & Propagation;2008 Special Issue 2, p1 

    We suggest that center-fed dipole antenna analytics can be employed in the optimized design of high-frequency MRI RF coil applications. The method is illustrated in the design of a single-segmented birdcage model and a short multisegmented birdcage model. As a byproduct, it is shown that for a...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics