Linked Life Data

8126796

Source:http://linkedlifedata.com/resource/pubmed/id/8126796

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1994-4-8
pubmed:abstractText
Testicular torsion affects prepubertal males and causes testicular infarction and subfertility. Animal models of spermatic cord torsion have been used in an attempt to study the mechanism of testicular injury from torsion. Although standardized animal models of torsion have been proposed, their reliability in producing testicular ischemia has not been documented. Dynamic enhanced magnetic resonance imaging (MRI) of the testis was used in a rat model with surgically induced, unilateral, 720 degrees torsion to quantify the severity of ischemia. Intravenous dysprosium diethylenetriaminepentaacetic acid-bis methylamide (Dy-DTPA-BMA) was injected as a bolus followed by serial dynamic Turbo GRASS images. Region of interest (ROI) measurements were obtained within the testicular parenchyma during contrast enhancement and washout. Perfusion abnormalities ranging from minimal delay in contrast enhancement in the torqued testicle to complete absence of intraparenchymal blood flow were documented with dynamic enhanced MRI. Reperfusion scans 1 hour after surgical reduction of torsion showed normalization of testicular blood flow in all animals. Dynamic enhanced MRI appears to be a useful method of documenting the perfusion deficit arising from torsion of the testis. Standard animal models of torsion produce inconsistent results because they do not reliably reproduce testicular ischemia. The ability of MRI to quantify perfusion abnormalities in the testis may provide additional information in the evaluation of human patients with symptoms of testicular torsion.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0022-5347
pubmed:author
pubmed:issnType
Print
pubmed:volume
151
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1070-2
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Variability of ischemia during spermatic cord torsion in the rat.
pubmed:affiliation
Department of Urology, University of Virginia Health Sciences Center, Charlottesville.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.