Zobrazeno 1 - 10
of 10
pro vyhledávání: '"J A, Nyenhuis"'
Autor:
J. A. Nyenhuis, Chris Miller
Publikováno v:
2011 XXXth URSI General Assembly and Scientific Symposium.
The in-vitro and in-vivo temperature rises during MRI for a sample passive implant in the form of a metal rod of 8 mm diameter and 118 mm length in the right humerus were calculated with FDTD and the heat equation. The temperature rise in a phantom t
Autor:
A, Sharan, A R, Rezai, J A, Nyenhuis, G, Hrdlicka, J, Tkach, K, Baker, M, Turbay, P, Rugieri, M, Phillips, F G, Shellock
Publikováno v:
Acta neurochirurgica. Supplement. 87
While it is desirable to perform MRI examinations in patients with deep brain stimulators (DBS), a major safety concern exists regarding the potential for excessive heating secondary to magnetically induced electrical currents. This study was designe
Autor:
O. P. Yee, J. A. Nyenhuis
Publikováno v:
Journal of Applied Physics. 76:6909-6911
There are a number of low cost nuclear magnetic resonance (NMR) applications that are based on measurements of spin‐spin (T2) and spin‐lattice (T1) relaxation times. Pulsed rf magnetic fields are typically used to flip the nuclear spins in these
Publikováno v:
Journal of magnetic resonance imaging : JMRI. 12(1)
In magnetic resonance, time-varying gradient magnetic fields (dB/dt) may stimulate nerves or muscles by inducing electric fields in patients. Models predicted mean peripheral nerve and cardiac stimulation thresholds. For gradient ramp durations of le
Autor:
F. J. Friedlaender, J. A. Nyenhuis
Publikováno v:
Wiley Encyclopedia of Electrical and Electronics Engineering
The sections in this article are 1 History 2 Magnetic Bubble Memory 3 Bloch Line Memory Keywords: magnetic bubble memory; bloch line; micromagnetic memory; domain wall; wall mobility; winding number; hard/soft bubbles; bubble memory
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aabb991b4e652bb96456c17c525d9107
https://doi.org/10.1002/047134608x.w4501
https://doi.org/10.1002/047134608x.w4501
Publikováno v:
Neuroimaging clinics of North America. 9(2)
The strength duration relationship for peripheral nerve stimulation by MR imaging pulsed gradient magnetic fields was measured in 84 human subjects. The data were fitted to the hyperbolic strength-duration relationship: dB/dt=b(1 + c/d), where b is r
Publikováno v:
The American journal of otology. 17(5)
Magnetic resonance imaging (MRI) has been contraindicated for users of cochlear implants because of the internal magnet and other possible interactions. Users of the Nucleus Mini-22 Cochlear Implant (CI) or the experimental Multichannel Auditory Brai
Publikováno v:
Electroencephalography and clinical neurophysiology. Supplement. 43
Magnetic stimulation of the heart requires high magnetic field energy and results in considerable Joulean dissipation. Energetically efficient and mechanically robust coils were designed for magnetic stimulation of the canine heart. Circular coils wi
Publikováno v:
Journal of Applied Physics. 81:5678-5678
For appropriate values of perpendicular and in-plane magnetic fields, Hn and Hp, respectively, domain walls in (210) garnet films exhibit zig-zag and sinusoidal distortions along their lengths. Microdeformations of domain walls (DW) near these “ins
Publikováno v:
Journal of Applied Physics. 55:2572-2574
In the rotating gradient experiment, a magnetic bubble is in steady state circular motion. The modulation of the dc bias field by a small sinusoidal component, the tickle field, has been found effective in reducing the static coercivity, resulting in