Linked Life Data

6463258

Source:http://linkedlifedata.com/resource/pubmed/id/6463258

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1984-9-12
pubmed:abstractText
Ultrasound estimation of fetal age is a routine, safe, and valuable diagnostic procedure. The overall accuracy of ultrasound measurement of femur length and biparietal diameter was investigated using a dowel phantom, chicken bones, and a bottle. Objects were imaged in a water bath using commercially available static, linear, and sector scanners. Transducer type and frequency, depth, object dimension, and observer variation were evaluated. Our results show that there was no appreciable difference between transducer types; the overall accuracy of the measurements improved with increasing transducer frequency; the lateral measurements consistently overestimated the object length; the absolute error in lateral measurements was between 0-12 mm; the absolute error in axial measurements was between 0-4 mm; the interobserver variability was +/- 1.3 mm, and intraobserver variability was +/- 1.0 mm. We conclude that transducer type does not affect measurement accuracy, measurement errors are greater in the lateral dimension as opposed to the axial dimension, proper quality assurance and performance evaluation procedures are necessary to ensure optimal results, and femur length measurements will continue to be useful in evaluation of gestational age.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0033-8419
pubmed:author
pubmed:issnType
Print
pubmed:volume
152
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
763-6
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1984
pubmed:articleTitle
Fetal age estimation by ultrasound: the impact of measurement errors.
pubmed:publicationType
Journal Article, Comparative Study