Abstract：
BACKGROUND:We sought to compare uterine cervical electrical impedance spectroscopy measurements employing two probes of different sizes, and to employ a finite element model to predict and compare the fraction of electrical current derived from subepithelial stromal tissue. METHODS:Cervical impedance was measured in 12 subjects during early pregnancy using 2 different sizes of the probes on each subject. RESULTS:Mean cervical resistivity was significantly higher (5.4 vs. 2.8 Omegam; p < 0.001) with the smaller probe in the frequency rage of 4-819 kHz. There was no difference in the short-term intra-observer variability between the two probes. The cervical impedance measurements derived in vivo followed the pattern predicted by the finite element model. CONCLUSION:Inter-electrode distance on the probes for measuring cervical impedance influences the tissue resistivity values obtained. Determining the appropriate probe size is necessary when conducting clinical studies of resistivity of the cervix and other human tissues.
journal_name
Biomed Eng Onlinejournal_title
Biomedical engineering onlineauthors
Gandhi SV,Walker DC,Brown BH,Anumba DOdoi
10.1186/1475-925X-5-62subject
Has Abstractpub_date
2006-11-24 00:00:00pages
62issn
1475-925Xpii
1475-925X-5-62journal_volume
5pub_type
临床试验,杂志文章abstract：BACKGROUND:Stroke is one of the major causes of morbidity and mortality. Its recovery and treatment depends on close clinical monitoring by a clinician especially during the first few hours after the onset of stroke. Patients who do not exhibit early motor recovery post thrombolysis may benefit from more aggressive tre...
journal_title：Biomedical engineering online
pub_type： 杂志文章
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journal_title：Biomedical engineering online
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journal_title：Biomedical engineering online
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journal_title：Biomedical engineering online
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journal_title：Biomedical engineering online
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journal_title：Biomedical engineering online
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journal_title：Biomedical engineering online
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journal_title：Biomedical engineering online
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journal_title：Biomedical engineering online
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journal_title：Biomedical engineering online
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journal_title：Biomedical engineering online
pub_type： 杂志文章
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journal_title：Biomedical engineering online
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journal_title：Biomedical engineering online
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journal_title：Biomedical engineering online
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journal_title：Biomedical engineering online
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journal_title：Biomedical engineering online
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journal_title：Biomedical engineering online
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journal_title：Biomedical engineering online
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journal_title：Biomedical engineering online
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