| Iliac artery stenosis measurements: comparison of two-dimensional time-of-flight and three-dimensional dynamic gadolinium-enhanced MR angiography. | |
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MedLine Citation:
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PMID: 9308478 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: We compared our ability to make iliac artery measurements on two-dimensional (2D) time-of-flight (TOF) and three-dimensional dynamic gadolinium-enhanced MR angiography with conventional angiography. SUBJECTS AND METHODS: Fifteen patients with lower extremity vascular disease underwent pelvic MR angiography. Parameters of the cardiac-gated axial 2D TOF sequence included a TR/TE of 24/7 msec and a 50 degrees flip angle. Parameters for the three-dimensional MR angiography sequence, in which we obtained 32 coronal 3-mm slices with fat suppression, included a TR/TE of 32/5 msec and a 40 degrees flip angle during infusion of 40 ml of gadolinium-chelated contrast material. Patients then underwent conventional angiography of the iliac arteries. Maximum stenosis in the common iliac, external iliac, and common femoral arteries was then measured. Measurements of stenosis were compared by repeated measures of analysis of variance. Sensitivity and specificity were calculated for identification of greater than or equal to 50% stenosis and less than 50% stenosis. RESULTS: For all vessels studied, we found no significant difference in measurements obtained from the gadolinium-enhanced MR angiography technique and those obtained from conventional angiography (p > .05). However, significantly different stenotic measurements were obtained from the 2D TOF MR angiography sequence and conventional angiography. In the external iliac arteries, 2D TOF MR angiography exaggerated stenoses most substantially. Gadolinium-enhanced MR angiography achieved 100% sensitivity and specificity. CONCLUSION: Dynamic gadolinium-enhanced MR angiography was more accurate than 2D TOF MR angiography when measuring degree of stenosis in the iliac arteries. |
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Authors:
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E Poon; E K Yucel; H Pagan-Marin; H Kayne |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: AJR. American journal of roentgenology Volume: 169 ISSN: 0361-803X ISO Abbreviation: AJR Am J Roentgenol Publication Date: 1997 Oct |
Date Detail:
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Created Date: 1997-10-16 Completed Date: 1997-10-16 Revised Date: 2008-02-15 |
Medline Journal Info:
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Nlm Unique ID: 7708173 Medline TA: AJR Am J Roentgenol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1139-44 Citation Subset: AIM; IM |
Affiliation:
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Department of Radiology, Boston Medical Center, MA 02118, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Arterial Occlusive Diseases / diagnosis, radiography Constriction, Pathologic Contrast Media* Female Gadolinium / diagnostic use Gadolinium DTPA Heterocyclic Compounds / diagnostic use Humans Iliac Artery / pathology*, radiography Magnetic Resonance Angiography / methods* Male Middle Aged Organometallic Compounds / diagnostic use Pentetic Acid / analogs & derivatives, diagnostic use Sensitivity and Specificity |
| Chemical | |
Reg. No./Substance:
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0/Contrast Media; 0/Heterocyclic Compounds; 0/Organometallic Compounds; 112188-16-6/gadoteridol; 67-43-6/Pentetic Acid; 7440-54-2/Gadolinium; 80529-93-7/Gadolinium DTPA |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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