Linked Life Data

2861314

Source:http://linkedlifedata.com/resource/pubmed/id/2861314

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
8442
pubmed:dateCreated
1985-7-29
pubmed:abstractText
Magnetic resonance (MR) can provide high-resolution tomographic images of the heart at any part of the cardiac cycle. Tests on static and dynamic phantoms showed that the technique can give accurate measurements of ventricular wall thickness, cavity volume, and stroke volume. In 20 patients with angina pectoris, electrocardiographically gated MR images of the left ventricle were compared with X-ray contrast ventriculograms. There was good correlation with the anteroposterior ventriculogram, but poorer correlation in the lateral projection because of difficulty in locating the aortic valve precisely on the ventriculogram. In 20 normal subjects, left and right ventricular volumes at end-diastole and end-systole were measured by summing the areas of the cavities in multiple contiguous sections. Stroke volumes and ejection fractions were thus calculated, and the ratio of left to right ventricular stroke volume was very close to the theoretical value of 1, in all cases. In any individual volume measurement, the error was approximately 2%. MR therefore provides an accurate non-invasive method of studying cardiac dimensions and function.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0140-6736
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
1
pubmed:owner
NLM
pubmed:authorsComplete
N
pubmed:pagination
1360-2
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1985
pubmed:articleTitle
Dimensional accuracy of magnetic resonance in studies of the heart.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't