Two-Slotted Surface Coil Array for Magnetic Resonance Imaging at 4 Tesla

Journal Article · Mon Aug 11 00:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2979254· OSTI ID:21149257

Solis, S E ^[1]; Hernandez, J A; Rodriguez, A O ^[2]; Tomasi, D ^[1]

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1. Medical Department, Brookhaven National Laboratory, Upton, N.Y. 11973 (United States)
2. Centro de Investigacion e Instrumentacion e Imagenologia Medica, Universidad Autonoma Metropolitana Iztapalapa, Mexico, DF 09340 (Mexico)

Arrays of antennas have been widely accepted for magnetic resonance imaging applications due to their high signal-to-noise ratio (SNR) over large volumes of interest. A new surface coil based on the magnetron tube and called slotted surface coil, has been recently introduced by our group. This coil design experimentally demonstrated a significant improvement over the circular-shaped coil when used in the receive-only mode. The slotted coils formed a two-sheet structure with a 90 deg. separation and each coil had 6 circular slots. Numerical simulations were performed using the finite element method for this coil design to study the behaviour of the array magnetic field. Then, we developed a two-coil array for brain magnetic resonance imaging to be operated at the resonant frequency of 170 MHz in the transceiver mode. Phantom images were acquired with our coil array and standard pulse sequences on a research-dedicated 4 Tesla scanner. Numerical simulations demonstrated that electromagnetic interaction between the coil elements is negligible, and that the magnetic field showed a good uniformity. In vitro images showed the feasibility of this coil array for standard pulses for high field magnetic resonance imaging.

• OSTI ID: 21149257
• Journal Information: AIP Conference Proceedings, Vol. 1032, Issue 1; Conference: 10. Mexican symposium on medical physics, Mexico City (Mexico), 17-19 Mar 2008; Other Information: DOI: 10.1063/1.2979254; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
BRAIN
COMPUTERIZED SIMULATION
DESIGN
ELECTROMAGNETIC FIELDS
FINITE ELEMENT METHOD
IMAGES
IN VITRO
MAGNET COILS
MAGNETIC FIELDS
MHZ RANGE
NMR IMAGING
NUCLEAR MAGNETIC RESONANCE
NUCLEAR MEDICINE
PHANTOMS
PULSES
SIGNAL-TO-NOISE RATIO