| MR angiography of lower extremities at 3 T: presurgical planning of fibular free flap transfer for facial reconstruction. | |
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MedLine Citation:
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PMID: 18287451 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: The purpose of our study was to evaluate the use of preoperative MR angiography of the lower extremities at 3 T in candidates for fibular free flap harvesting, identifying atherosclerotic occlusive disease and congenital anomalies in this population. Our intention was to document the influence of the imaging findings on the surgical approach used. MATERIALS AND METHODS: Twenty-nine consecutive adult patients with facial abnormalities necessitating mandibular resection with subsequent osteocutaneous mandibular reconstruction who underwent preoperative MR angiography at 3 T were retrospectively reviewed. Images were evaluated by two observers with regard to image quality and visualization of arterial segments; severity of stenosis; and presence of noise, artifact, or venous contamination. The popliteal artery branching pattern present was also classified. The facial and reconstructive surgeon involved indicated whether the MR angiographic appearances influenced the decision regarding the side or location from which the flap was harvested or the flap design. RESULTS: Arterial segments were visualized with good or excellent image quality in 722 of 725 segments for observer 1 and 721 segments for observer 2. The kappa coefficient indicated good interobserver agreement (kappa = 0.78) with regard to quality of arterial segment depiction and scoring of stenoocclusive disease (kappa = 0.64). No segments had venous contamination, noise, or artifact of a degree sufficient to compromise diagnostic interpretation. Imaging influenced the surgical approach in 16 (55.2%) of 29 patients. CONCLUSION: Trifurcation vessel imaging should be a prerequisite to fibular free flap harvesting. High-spatial-resolution MR angiography at 3 T represents a desirable alternative to other invasive or cross-sectional imaging techniques in this regard. |
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Authors:
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Derek G Lohan; Anderanik Tomasian; Mayil Krishnam; Praveen Jonnala; Keith E Blackwell; J Paul Finn |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: AJR. American journal of roentgenology Volume: 190 ISSN: 1546-3141 ISO Abbreviation: AJR Am J Roentgenol Publication Date: 2008 Mar |
Date Detail:
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Created Date: 2008-02-21 Completed Date: 2008-04-10 Revised Date: - |
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: 770-6 Citation Subset: AIM; IM |
Affiliation:
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Division of Cardiovascular Imaging, Department of Radiological Sciences, David Geffen School of Medicine at UCLA, University of California Los Angeles, Los Angeles, CA 90095-7206, USA. dlohan@mednet.ucla.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Atherosclerosis / radiography* Cohort Studies Face / surgery Female Humans Leg / blood supply*, radiography* Magnetic Resonance Angiography* Male Middle Aged Preoperative Care Reconstructive Surgical Procedures Retrospective Studies Surgical Flaps* Tissue and Organ Harvesting Vascular Malformations / radiography* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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