Document Detail


Haemodynamic changes in the liver under balloon occlusion of a portal vein branch: evaluation with single-level dynamic computed tomography during hepatic arteriography.
MedLine Citation:
PMID:  17467396     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
AIM: To assess haemodynamic changes in the liver under temporary occlusion of an intrahepatic portal vein. MATERIALS AND METHODS: Between February 2000 and October 2004, 16 patients with hepatobiliary disease underwent single-level dynamic computed tomography during hepatic arteriography (SLD-CTHA) under temporary balloon occlusion of an intrahepatic portal vein. All patients needed percutaneous transhepatic portography for therapy of their disease. SLD-CTHA was undertaken to clarify the time-attenuation curve influenced by portal vein occlusion, and it was performed continuously over a period of 30s. The difference in absolute attenuation of the liver parenchyma in segments with occluded and non-occluded portal vein branches was determined by means of the CT number, and the difference in absolute attenuation of the occluded and non-occluded portal veins themselves was also evaluated. RESULTS: SLD-CTHA demonstrated a demarcated hyperattenuation area in the corresponding distribution of the occluded portal vein branch. The attenuation of the liver parenchyma supplied by the occluded portal vein was significantly higher than that in the non-occluded area (p<0.01). The balloon-occluded portal branch enhancement in 15 of 16 cases (94%) appears due to arterio-portal communications. Failure to evaluate a remaining case for portal branch enhancement was due to absence of a visualized portal branch in the section. CONCLUSION: Under temporary occlusion of an intrahepatic portal vein, hepatic angiography produced enhancement of the occluded portal branches and their corresponding parenchymal distribution; this finding is considered consistent with the presence of arterio-portal communications.
Authors:
Y Komada; S Murata; H Tajima; S Kumita; H Kanazawa; T Tajiri
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-04-05
Journal Detail:
Title:  Clinical radiology     Volume:  62     ISSN:  0009-9260     ISO Abbreviation:  Clin Radiol     Publication Date:  2007 Jun 
Date Detail:
Created Date:  2007-04-30     Completed Date:  2007-06-22     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1306016     Medline TA:  Clin Radiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  579-86     Citation Subset:  IM    
Affiliation:
Department of Radiology, Center for Advanced Medical Technology, Sendagi, Tokyo, Japan. brian-komada@msj.biglobe.ne.jp
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Balloon Occlusion / methods*
Female
Hepatic Artery / radiography
Humans
Liver / physiopathology*,  radiography
Liver Circulation / physiology*
Liver Cirrhosis / physiopathology,  ultrasonography
Male
Middle Aged
Portal Vein / physiopathology*,  radiography
Tomography, X-Ray Computed / methods

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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