Shielded biplanar gradient coil design
نویسندگان
چکیده
منابع مشابه
Shielded biplanar gradient coil design.
An application of the target field method to the design of shielded biplanar gradient coils for magnetic resonance imaging electromagnets is presented. Some specific cases are studied, and optimized geometries are proposed for the axial and transverse gradient coils that eliminate the third- and minimize the fifth-order terms in the magnetic field expansion.
متن کاملFast optimization of a biplanar gradient coil set.
This work presents an approach for fast optimization of gradient coils, using the simulated annealing method. The shielding condition derived from a target field method and the analytical evaluation of the fields produced by simple geometries were used to reduce the computing time. This method is applied to the optimization of a shielded biplanar gradient coil set. Efficiency, inductance, and h...
متن کاملAn optimized target-field method for MRI transverse biplanar gradient coil design
Gradient coils are essential components of magnetic resonance imaging (MRI) systems. In this paper, we present an optimized target-field method for designing a transverse biplanar gradient coil with high linearity, low inductance and small resistance, which can well satisfy the requirements of permanent-magnet MRI systems. In this new method, the current density is expressed by trigonometric ba...
متن کاملAdaptive Method for Gradient Coil Design
Method One of the obstacles in designing gradient coil is the general discretization procedure that approximates the continuous current densities by a number of current carrying conductors. The shape of the conductors’ layout determines the properties of the gradient coil such as the gradient strength, field quality characteristics inside the FoV, level of shielding, coil resistance, slew rate,...
متن کاملTheory of Gradient Coil Design Methods for Magnetic Resonance Imaging
The process to produce an MR image includes nuclear alignment, RF excitation, spatial encoding, and image formation. In simple terms, an magnetic resonance imaging (MRI) system consists of five major components: a magnet, gradient systems, an RF coil system, a receiver, and a computer system. To form an image, it is necessary to perform spatial localization of the MR signals, which is achieved ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Magnetic Resonance Imaging
سال: 1999
ISSN: 1053-1807,1522-2586
DOI: 10.1002/(sici)1522-2586(199905)9:5<725::aid-jmri16>3.0.co;2-l