Since Rex got a question, Does MRI work at fields other than 1.5
Tesla? I have an excuse to contribute a link to some exciting work
from LANL. There is a whole series of papers, but the public dollars
we put into this work appear to have produced papers largely in the
copyrighted IEEE Transactions on Applied Superconductivity. If you are
at Sandia, someone has already paid the IEEE for you to access any and
all of the full text of these articles. You can start with the URL
below. I will also post the abstract of one, choice article, as it
appears for anyone to read on the IEEE web pages. Unfortunately, this
abstract isn't nearly as catchy as the words in the full paper. I
think fair use can justify me lifting a few of these words from their
introduction and including here:
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More recently there has been interest and progress in the area of
ultra-low field (ULF, range) NMR and MRI. Interest in ULF NMR/MRI has
been driven by the prospect of systems of reduced cost and size [1].
Such systems could be portable and the sample need not be restricted
to the interior of a magnet bore (ex situ or "inside out" imaging).
Low-field methods even enable imaging using the earth's magnetic
field, about 50 micro-Tesla [2]-[7].
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I will see if I can load a pdf-format file with the abstract on this
group. The reference, with link to the IEEE pages and (for those who
pay) full text is:
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SQUID-based simultaneous detection of NMR and biomagnetic signals at
ultra-low magnetic fields
Espy, M.A. Matlachov, A.N. Volegov, P.L. Mosher, J.C. Kraus,
R.H., Jr.
Los Alamos Nat. Lab., NM, USA
This paper appears in: Applied Superconductivity, IEEE Transactions
on
Publication Date: June 2005
Volume: 15 , Issue: 2 , Part 1
On page(s): 635 - 639
ISSN: 1051-8223
http://ieeexplore.ieee.org/search/srchabstract.jsp?arnumber=1439718&isnumber=31006&punumber=77&k2dockey=1439718@ieeejrns&query=%28%28volegov%29%3Cin%3Emetadata%29&pos=4
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The recent head shots from Valdim Zotev (also at LANL, and yes, it is
his head in the images) seem to be all over the web at the moment. One
link to them is:
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A Weaker, Cheaper MRI
By Neil Savage
First Published January 2008
http://spectrum.ieee.org/jan08/5837