Stray field magnetic resonance tomography using ferromagnetic spheres
نویسندگان
چکیده
منابع مشابه
Stray field magnetic resonance tomography using ferromagnetic spheres.
The methodology for obtaining two- and three-dimensional magnetic resonance images by using azimuthally symmetric dipolar magnetic fields from ferromagnetic spheres is described. We utilize the symmetric property of a geometric sphere in the presence of a large externally applied magnetic field to demonstrate that a complete two- or three-dimensional structured rendering of a sample can be obta...
متن کاملMulti-dimensional magnetic resonance imaging in a stray magnetic field.
Stray field imaging has been extensively utilized in the last 10 years to perform very high resolution imaging of samples in a single dimension using the massive field gradient present in the fringe of a superconducting magnet. By spinning the sample around the magic-angle, the stray field gradient is successively reoriented along three orthogonal directions in the sample reference frame, allow...
متن کاملStray-field nuclear magnetic resonance imaging in microgravity conditions
Magnetic levitation has been proposed as an alternative approach to simulate on Earth microgravity conditions encountered in space, allowing the investigation of weightlessness on materials and biological systems. In general, very strong magnetic fields, 15 T or higher, are required to achieve levitation for a majority of diamagnetic substances. Here, we show that it is possible to achieve levi...
متن کاملGeneralized Resonance Modes in Ferromagnetic Spheres
Abet-In the present work we deal with the resonance modes in small ferromagnetic spheres. The analysis is based on the theory of micromagnetism, proposed by W. F. Brown and an optimization technique. Numerical results are presented for the resonance field, as well as for the resonance modes and the magnetization configuration in the material. The resonance modes described in this work could be ...
متن کاملMagnetic resonance diffraction using the magnetic field from a ferromagnetic sphere
The theory of magnetic resonance diffraction is developed for the case of a crystal in close proximity of a ferromagnetic sphere. Distinct spectral peaks in the magnetic resonance signal are discovered for the specific ferromagnetic sphere and magnetic field configurations, and the appearance of the peaks is a direct signature of the presence of discrete atomic sites in the crystal lattice. The...
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
سال: 2006
ISSN: 1090-7807
DOI: 10.1016/j.jmr.2006.05.001