Zobrazeno 1 - 10
of 91
pro vyhledávání: '"Matlachov AN"'
Autor:
Zotev, V. S., Matlachov, A. N., Volegov, P. L., Sandin, H. J., Espy, M. A., Mosher, J. C., Urbaitis, A. V., Newman, S. G., Kraus Jr, R. H.
Publikováno v:
Int.Congress Ser.1300:631-634,2007
Magnetoencephalography (MEG) and magnetic resonance imaging at ultra-low fields (ULF MRI) are two methods based on the ability of SQUID (superconducting quantum interference device) sensors to detect femtotesla magnetic fields. Combination of these m
Externí odkaz:
http://arxiv.org/abs/physics/0612048
Autor:
Zotev, Vadim S., Matlachov, Andrei N., Volegov, Petr L., Sandin, Henrik J., Espy, Michelle A., Mosher, John C., Urbaitis, Algis V., Newman, Shaun G., Kraus Jr, Robert H.
Publikováno v:
IEEETrans.Appl.Supercond.17:839-842,2007
A seven-channel system capable of performing both magnetoencephalography (MEG) and ultra-low-field magnetic resonance imaging (ULF MRI) is described. The system consists of seven second-order SQUID gradiometers with 37 mm diameter and 60 mm baseline,
Externí odkaz:
http://arxiv.org/abs/physics/0611290
Publikováno v:
In Neuroimage 2008 39(1):310-317
Publikováno v:
In Journal of Magnetic Resonance 2006 183(1):134-141
Autor:
Matlachov, Andrei N., Volegov, Petr L., Espy, Michelle A., George, John S., Kraus, Robert H., Jr.
Publikováno v:
In Journal of Magnetic Resonance 2004 170(1):1-7
Publikováno v:
NeuroImage. 39:310-317
A variety of techniques have been developed to noninvasively image human brain function that are central to research and clinical applications endeavoring to understand how the brain works and to detect pathology (e.g. epilepsy, schizophrenia, etc.).
Publikováno v:
International Congress Series. 1300:582-585
We present the physical basis and experimental evidence for a new technique to detect the direct consequences of neural activity. While ultra-low field (ULF) NMR may be more sensitive for measuring the phase effect that was proposed by other research
Publikováno v:
IEEE Transactions on Applied Superconductivity. 17:808-811
In this paper we compare the detection of magnetic microparticles by HTS SQUIDs and GMR sensors. Our prototype system uses a HTS SQUID array insulated/isolated from a nonmagnetic tube in which the sample flows at room temperature. This necessarily re
Autor:
John C. Mosher, Vadim Zotev, Algis V. Urbaitis, A.N. Matlachov, Robert H. Kraus, Petr Volegov, Michelle A. Espy
Publikováno v:
IEEE Transactions on Applied Superconductivity. 17:854-857
Modern high field (HF) MRI uses magnetic fields greater than 1.5 T to yield exquisite anatomical features. We have also seen an explosion in functional MRI in the last decade that measures hemodynamic responses that are ultimately sluggish (~one sec)
Publikováno v:
IEEE Transactions on Applied Superconductivity. 17:672-675
We have developed several types of low-Tc first-order planar gradiometers with long baselines ranging from 3.6 cm to 4 cm. Thin-film planar gradiometers are very attractive for measurements of the off-diagonal components of the magnetic field gradien