| Accurate perioperative flow measurement of the portal vein and hepatic and renal artery: A role for preoperative MRI? | |
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MedLine Citation:
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PMID: 21724349 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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BACKGROUND: Quantification of abdominal blood flow is essential for a variety of gastrointestinal and hepatic topics such as liver transplantation or metabolic flux measurement, but those need to be performed during surgery. It is not clear whether Duplex Doppler Ultrasound during surgery or MRI before surgery is the tool to choose. OBJECTIVE: To examine whether preoperative evaluation of abdominal blood flow using MRI could prove to be a useful and reliable alternative for the perioperative sonographic approach. METHODS: In this study portal and renal venous flow and hepatic arterial flow were sequentially quantified by preoperative MRI, preoperative and perioperative Duplex Doppler Ultrasound (DDUS). 55 Patients scheduled for major abdominal surgery were studied and methods and settings were compared. Additionally, average patient population values were compared. RESULTS: Mean (±SD) plasmaflow measured by perioperative DDUS, preoperative DDUS and MRI, respectively was 433±200/423±162/507±96ml/min (portal vein); 96±70/74±41/108±91ml/min (hepatic artery); 248±139/201±118/219±69ml/min (renal vein). No differences between the different settings of DDUS measurement were detected. Equality of mean was observed for all measurements. Bland Altman Plots showed widespread margins. Hepatic arterial flow measurements correlated with each other, but portal and renal venous flow correlations were absent. CONCLUSIONS: Surgery and method (DDUS vs. MRI) do not affect mean flow values. Individual comparison is restricted due to wide range in measurements. Since MRI proves to be more reliable with respect to inter-observer variability, we recommend using mean MRI results in experimental setups. |
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Authors:
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Mechteld A R Vermeulen; Gerdien C Ligthart-Melis; René Buijsman; Michiel P C Siroen; Marcel C G van de Poll; Petra G Boelens; Cornelis H C Dejong; Cors van Schaik; Mark B M Hofman; Paul A M van Leeuwen |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-7-1 |
Journal Detail:
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Title: European journal of radiology Volume: - ISSN: 1872-7727 ISO Abbreviation: - Publication Date: 2011 Jul |
Date Detail:
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Created Date: 2011-7-4 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8106411 Medline TA: Eur J Radiol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier Ireland Ltd. All rights reserved. |
Affiliation:
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Department of Surgery, VU University Medical Center, P.O. Box 7057, 1007 MB Amsterdam, The Netherlands(1). |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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