Publication Date:
1993-02-05
Description:
A high-temperature superconducting-receiver system for use in nuclear magnetic resonance (NMR) microscopy is described. The scaling behavior of sources of sample and receiver-coil noise is analyzed, and it is demonstrated that Johnson, or thermal, noise in the receiver coil is the factor that limits resolution. The behavior of superconductors in the environment of an NMR experiment is examined, and a prototypical system for imaging biological specimens is discussed. Preliminary spin-echo images are shown, and the ultimate limits of the signal-to-noise ratio of the probe are investigated.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Black, R D -- Early, T A -- Roemer, P B -- Mueller, O M -- Mogro-Campero, A -- Turner, L G -- Johnson, G A -- 1P41 RR05959/RR/NCRR NIH HHS/ -- ES0 4187/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1993 Feb 5;259(5096):793-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉General Electric Corporate Research and Development Center, Schenectady, NY 12301.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8430331" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Humans
;
Magnetic Resonance Spectroscopy/*instrumentation/methods
;
Models, Theoretical
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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