Article: Gadolinium-infusion magnetic resonance angiogram: A new, noninvasive, and accurate method of preoperative localization of impalpable undescended testes

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TitleGadolinium-infusion magnetic resonance angiogram: A new, noninvasive, and accurate method of preoperative localization of impalpable undescended testes
AuthorsLam, WWM
Tam, PKH1
Ai, VHG
Chan, KL
Cheng, W
Chan, FL
Leong, L
KeywordsMR angiogram
MRI
Undescended testis
Issue Date1998
PublisherWB Saunders Co. The Journal's web site is located at http://www.elsevier.com/locate/jpedsurg
CitationJournal Of Pediatric Surgery, 1998, v. 33 n. 1, p. 123-126 [How to Cite?]
DOI: http://dx.doi.org/10.1016/S0022-3468(98)90377-3
AbstractPurpose: This study investigates the usefulness of Gadolinium (Gd)- infusion magnetic resonance angiogram (MRA) in the detection of impalpable undescended testes. Methods: Magnetic resonance (MRI) examination was performed in 14 patients with 17 impalpable undescended testes (unilateral, n = 11; bilateral, n = 3). MRA was then performed as follows: Gadolinium-DTPA- BMA (Omniscan) at 0.3 mmol/kg body weight was injected intravenously, and dynamic coronal examination using fast spoiled gradient recalled sequences was obtained with images taken at early arterial and delay venous phases. The testis was located by detection of the enhanced pampiniform venous plexus. Results: Of the 17 undescended testes, 11 canalicular hypoplastic testes and 3 intraabdominal testes were detected in both routine MRI and MRA. Three atrophic testes were found in the scrotum by MRA but not detected by routine MRI. The detection rates of impalpable testes by MRI and MRA were 82.4% and 100%, respectively. All imaging findings were confirmed by surgical exploration. There was no morbidity associated with MRA. Conclusion: Gd- infusion MRA is an accurate and sensitive method of preoperative localization of impalpable testes and is superior to conventional MRI in the detection of atrophic testes.
ISSN0022-3468
2011 Impact Factor: 1.45
2011 SCImago Journal Rankings: 0.114
DOIhttp://dx.doi.org/10.1016/S0022-3468(98)90377-3
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorLam, WWM
dc.contributor.authorTam, PKH
dc.contributor.authorAi, VHG
dc.contributor.authorChan, KL
dc.contributor.authorCheng, W
dc.contributor.authorChan, FL
dc.contributor.authorLeong, L
dc.date.accessioned2010-09-06T08:46:46Z
dc.date.available2010-09-06T08:46:46Z
dc.date.issued1998
dc.description.abstractPurpose: This study investigates the usefulness of Gadolinium (Gd)- infusion magnetic resonance angiogram (MRA) in the detection of impalpable undescended testes. Methods: Magnetic resonance (MRI) examination was performed in 14 patients with 17 impalpable undescended testes (unilateral, n = 11; bilateral, n = 3). MRA was then performed as follows: Gadolinium-DTPA- BMA (Omniscan) at 0.3 mmol/kg body weight was injected intravenously, and dynamic coronal examination using fast spoiled gradient recalled sequences was obtained with images taken at early arterial and delay venous phases. The testis was located by detection of the enhanced pampiniform venous plexus. Results: Of the 17 undescended testes, 11 canalicular hypoplastic testes and 3 intraabdominal testes were detected in both routine MRI and MRA. Three atrophic testes were found in the scrotum by MRA but not detected by routine MRI. The detection rates of impalpable testes by MRI and MRA were 82.4% and 100%, respectively. All imaging findings were confirmed by surgical exploration. There was no morbidity associated with MRA. Conclusion: Gd- infusion MRA is an accurate and sensitive method of preoperative localization of impalpable testes and is superior to conventional MRI in the detection of atrophic testes.
dc.description.naturelink_to_subscribed_fulltext
dc.identifier.citationJournal Of Pediatric Surgery, 1998, v. 33 n. 1, p. 123-126 [How to Cite?]
DOI: http://dx.doi.org/10.1016/S0022-3468(98)90377-3
dc.identifier.doihttp://dx.doi.org/10.1016/S0022-3468(98)90377-3
dc.identifier.epage126
dc.identifier.hkuros33077
dc.identifier.isiWOS:000071499400029
dc.identifier.issn0022-3468
2011 Impact Factor: 1.45
2011 SCImago Journal Rankings: 0.114
dc.identifier.issue1
dc.identifier.openurl
dc.identifier.pmid9473116
dc.identifier.scopuseid_2-s2.0-0031985045
dc.identifier.spage123
dc.identifier.urihttp://hdl.handle.net/10722/83919
dc.identifier.volume33
dc.languageeng
dc.publisherWB Saunders Co. The Journal's web site is located at http://www.elsevier.com/locate/jpedsurg
dc.publisher.placeUnited States
dc.relation.ispartofJournal of Pediatric Surgery
dc.relation.referencesReferences in Scopus
dc.subjectMR angiogram
dc.subjectMRI
dc.subjectUndescended testis
dc.titleGadolinium-infusion magnetic resonance angiogram: A new, noninvasive, and accurate method of preoperative localization of impalpable undescended testes
dc.typeArticle
Author Affiliations
  1. Queen Mary Hospital Hong Kong