Asymmetrical gradient coil for head imaging
نویسندگان
چکیده
منابع مشابه
Discrete Design of an Insert Gradient Coil for Head Imaging in High Field MRI
S. Shvartsman, G. DeMeester, M. Morich Philips Medical Systems, Cleveland, Ohio, United States Introduction In this work we present designs for a transverse head insert gradient coil using a discrete coil design method. The targets for the gradient are: 60mT/m gradient strength, 600mT/m/ms slew rate, and 24cm Field-of-View (FoV). The gradient is sized to fit within a whole body gradient coil. I...
متن کاملStatic Coil Design Considerations for the Magnetic Resonance Imaging
One of the main challenges in developing magnetic resonance imaging (MRI) systems is to create a static coil that needs to generate magnetic field density along with the characteristics of optimal homogeneity and magnitude size. To do this, two N42 Block PMs are used and the iron core is designed and optimized in accordance with the dimensions of PM pieces using ANSYS Maxwell software. Then, al...
متن کاملWrapped Edge Gradient Coil for Mri-pet Animal Imaging
Introduction: The medical imaging methods of Computed Tomography (CT), Magnetic Resonance Imaging (MRI) and Positron Emission Tomography (PET) are well established, each with their own advantages and disadvantages. There appears to be an ever increasing need to combine these modes of imaging, with the view of providing earlier diagnosis of disease, improved treatment planning and better patient...
متن کاملCurved gradient coil designs for anatomically specific imaging applications
Introduction A powerful, all-purpose method has been developed over the past several years that allows for gradient design of virtually arbitrary geometry [1,2]. We have implemented this boundary element (BE) method following the particular approach of Poole and Bowtell [1]. In the current study, this method has been used to design and analyze the performance of curved gradient coil geometries ...
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: Magnetic Resonance in Medicine
سال: 2002
ISSN: 0740-3194
DOI: 10.1002/mrm.10263