Document Detail


A novel device with 36 channels for imaging and signal acquisition of the gastrointestinal tract based on AC biosusceptometry.
MedLine Citation:
PMID:  21096717     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The alternate current biosusceptometry (ACB) is a biomagnetic technique used to study some physiological parameters associated with gastrointestinal (GI) tract. For this purpose it applies an AC magnetic field and measures the response originating from magnetic marks or tracers. This paper presents an equipment based on the ACB which uses anisotropic magnetoresistive (AMR) sensors and an inexpensive electronic support. The ACB-AMR developed consists of a square array of 6×6 sensors arranged in a first-order gradiometer configuration with one reference sensor. The equipment was applied to capture magnetic images of different phantoms and to acquire gastric contraction activity of healthy rats. The results show a reasonable sensitivity and spatial-temporal resolution, so that it may be applied for imaging of phantoms and signal acquisition of the GI tract of small animals.
Authors:
Fabiano C Paixao; Caio C Quini; Oswaldo Baffa; Jose Ricardo de A Miranda
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference     Volume:  2010     ISSN:  1557-170X     ISO Abbreviation:  Conf Proc IEEE Eng Med Biol Soc     Publication Date:  2010  
Date Detail:
Created Date:  2010-11-24     Completed Date:  2011-03-17     Revised Date:  2014-08-21    
Medline Journal Info:
Nlm Unique ID:  101243413     Medline TA:  Conf Proc IEEE Eng Med Biol Soc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  6457-60     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Diagnostic Imaging / instrumentation*,  methods*
Gastrointestinal Tract*
Magnetics / instrumentation*,  methods*
Phantoms, Imaging
Rats

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


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