Document Detail


Measurement of electrical current density distribution in a simple head phantom with magnetic resonance imaging.
MedLine Citation:
PMID:  10071889     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Knowledge of the influence of the human skull on the electrical current (d.c.) distribution within the brain tissue could prove useful in measuring impedance changes inside the human head. These changes can be related to physiological functions. The studies presented in this paper examine the current density distribution in a simple phantom consisting of a saline filled tank (to simulate scalp and brain) and a ring made of dental grade plaster of Paris (to simulate the human skull). Images of the distribution of the d.c. density of the phantom with and without the plaster of Paris ring were produced using a magnetic resonance imaging technique. These images indicate that the skull is likely to produce a more uniform d.c. density within the brain.
Authors:
H R Gamba; R Bayford; D Holder
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Physics in medicine and biology     Volume:  44     ISSN:  0031-9155     ISO Abbreviation:  Phys Med Biol     Publication Date:  1999 Jan 
Date Detail:
Created Date:  1999-03-22     Completed Date:  1999-03-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0401220     Medline TA:  Phys Med Biol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  281-91     Citation Subset:  IM    
Affiliation:
Medical Physics Department, University College London, UK.
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MeSH Terms
Descriptor/Qualifier:
Brain / anatomy & histology*,  physiology*
Computing Methodologies
Electric Conductivity
Head
Humans
Image Processing, Computer-Assisted*
Magnetic Resonance Imaging / methods*
Phantoms, Imaging*
Skull / anatomy & histology*
Sodium Chloride
Chemical
Reg. No./Substance:
7647-14-5/Sodium Chloride

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


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