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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
8
|
| pubmed:dateCreated |
1997-12-22
|
| pubmed:abstractText |
The purpose of this study was to evaluate the relation of transthoracic three- and two-dimensional echocardiographic left ventricular volumetry to cineventriculographic volumetry. Twenty-five patients with distorted left ventricles were included in the study. To demonstrate the impact of acquiring data by rotational scanning, we performed three- and two-dimensional echocardiography in 36 latex ventricles with data acquisition in different areas of the ultrasound sectors. Interobserver and intraobserver variability were calculated to test for reproducibility. The three-dimensional imaging system consisted of a rotation motor device, a transthoracic 2.5 MHz transducer, a conventional ultrasound unit, and a work-station (TomTec) which provides data acquisition, post-processing, and two- or three-dimensional visualization of digitized data. The transducer moved automatically at 2-degree increments with data acquisition at each tomographic level. The mean investigation time for three-dimensional echocardiography was 21 +/- 6 minutes. In the central near field of the transducer, differences from true volumes in latex ventricles were remarkably smaller for three-dimensional compared with two-dimensional echocardiography (root mean square percent error: three-dimensional echocardiography = 5.3% versus two-dimensional echocardiography = 14.6%). In three-dimensional echocardiography, there was considerable overestimation of volumes in the lateral far field (root mean square percent error = 13.2%) of the ultrasound sector. Differences between two-dimensional echocardiographic human left ventricular volumes and cineventriculography increased with larger volumes. In three-dimensional echocardiography the differences remained constant. Interobserver and intraobserver variability is reduced nearly twofold by three-dimensional echocardiography. Three-dimensional echocardiographic volumetry provides fewer discrepancies to cineventriculography and lesser variability than two-dimensional echocardiography. With the use of rotational scanning, the ventricle has to be positioned in the central near field of the transducer.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:status |
MEDLINE
|
| pubmed:month |
Oct
|
| pubmed:issn |
0894-7317
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
10
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
840-52
|
| pubmed:dateRevised |
2004-11-17
|
| pubmed:meshHeading |
pubmed-meshheading:9356949-Adult,
pubmed-meshheading:9356949-Aged,
pubmed-meshheading:9356949-Cardiac Volume,
pubmed-meshheading:9356949-Echocardiography, Transesophageal,
pubmed-meshheading:9356949-Female,
pubmed-meshheading:9356949-Heart Ventricles,
pubmed-meshheading:9356949-Humans,
pubmed-meshheading:9356949-Image Processing, Computer-Assisted,
pubmed-meshheading:9356949-Male,
pubmed-meshheading:9356949-Middle Aged,
pubmed-meshheading:9356949-Models, Anatomic,
pubmed-meshheading:9356949-Observer Variation,
pubmed-meshheading:9356949-Regression Analysis,
pubmed-meshheading:9356949-Reproducibility of Results
|
| pubmed:year |
1997
|
| pubmed:articleTitle |
Transthoracic three-dimensional echocardiographic volumetry of distorted left ventricles using rotational scanning.
|
| pubmed:affiliation |
II Medical Clinic, University of Mainz, Germany.
|
| pubmed:publicationType |
Journal Article
|