gradient coil

gradient coil

An MRI term for any of three paired orthogonal current-carrying coils located within the magnet designed to produce desired gradient magnetic fields, which collectively and sequentially are superimposed on the main magnetic field (Bo) to allow selective spatial excitation of the imaging volume. Gradients are also used to apply reversal pulses for some fast imaging techniques.
Mentioned in ?
References in periodicals archive ?
The outer diameter of SimPET is 99 mm and will fit within gradient coil diameters of 100 mm and greater.
PARTNERS UNVEIL SIMPET PET/MRI INSERT
The SuperG gradient coil introduces outstanding performance and superb stability, which is designed to deliver the performance of ultra-high-performance, research-class 60 centimeter MRI system in a 70 centimeter bore.
FDA clears GE's SIGNA Premier 3T MRI co-developed with NFL
One of the challenges is the acoustic noise from the split gradient coil [1].
A Structure Design Method for Reduction of MRI Acoustic Noise
Extreme modifications in hardware, such as gradient coil insertion or software upgrades, were excluded from the scope of the paper, but additional gadgets or considerations were discussed for longitudinally scanning small animals under anesthesia while monitoring their vital signs.
Feasibility and merits of performing preclinical imaging on clinical radiology and nuclear medicine systems
Motion of the subject within the gradient coil due to the vibration will result in blurring of the image.
A review on potential issues and challenges in MR Imaging
The ability to increase bandwidth is also limited by gradient coil strength.
Abdominal imaging at 3T: challenges and solutions
In vivo fiber tracking in the rat brain on a clinical 3T MRI system using a high strength insert gradient coil. Neuroinnage 35(3):1077-1085, 2007.
Magnetic resonance imaging approaches for studying alcoholism using mouse models
Pianissimo[TM] uses special insulators to reduce acoustic noise from the vibration of the gradient coil. Noise is further reduced through a unique gradient vacuum vessel and independent ground support that shields against air vibration.
Toshiba System Muffles MR Noise
Gradient coil equipment is expensive/intricate, noisy, power and space demanding, and can induce complex spatiotemporal eddy currents in nearby conducting structures, including the patient [2-4].
Model for [B.sub.1] imaging in MRI using the rotating RF field
Aurora began in 1985 as an engineering firm that specialized in gradient coil design, and it now manufactures the Aurora 1.5T Dedicated Breast MRI System with Bilateral 3-D SpiralRODEO.
Magnetic resonance imaging of the breast

Medical browser ?
Full browser ?