Document Detail


Inductively coupled rf coils for examinations of small animals and objects in standard whole-body MR scanners.
MedLine Citation:
PMID:  12852549     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Inductively coupled solenoid coils fitting to objects in the size of mice or rats were developed to adapt modem whole-body MR scanners featuring sufficient gradient strength for animal examinations with high spatial resolution. Homogenous receiver characteristics is achievable over almost the whole inner region of the solenoid coils. The SNR can be increased by a factor 2 to 6 with the adapting coils for examinations using the head coil as connected receiver. Standard sequences on clinical 1.5 T scanners can be applied with adapted transmitter voltages. For example, a SNR value of about 30 is achievable in a mouse liver after 10 minutes measuring time using a 2-D spin echo imaging sequence and a size of 0.3 x 0.3 x 0.8 mm3 for the picture elements.
Authors:
Hansjörg Graf; Petros Martirosian; Fritz Schick; Marco Grieser; Matthias E Bellemann
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Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't; Validation Studies    
Journal Detail:
Title:  Medical physics     Volume:  30     ISSN:  0094-2405     ISO Abbreviation:  Med Phys     Publication Date:  2003 Jun 
Date Detail:
Created Date:  2003-07-10     Completed Date:  2004-03-25     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0425746     Medline TA:  Med Phys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1241-5     Citation Subset:  IM    
Affiliation:
Section on Experimental Radiology, Department of Diagnostic Radiology, University of Tübingen, 72076 Tübingen, Germany. hansjoerg.graf@med.uni-tuebingen.de
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MeSH Terms
Descriptor/Qualifier:
Animals
Computer-Aided Design*
Equipment Design
Equipment Failure Analysis*
Magnetic Resonance Imaging / instrumentation*,  methods*
Magnetics / instrumentation*
Mice
Phantoms, Imaging
Rats
Transducers*
Whole-Body Counting / instrumentation*,  methods*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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