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Segmentation of liver and vessels from CT images and classification of liver segments for preoperative liver surgical planning in living donor liver transplantation

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dc.contributor.authorYang, X-
dc.contributor.authorYang, JD-
dc.contributor.authorHwang, HP-
dc.contributor.authorYu, HC-
dc.contributor.authorAhn, S-
dc.contributor.authorKim, BW-
dc.contributor.authorYou, H-
dc.date.accessioned2019-11-13T04:27:24Z-
dc.date.available2019-11-13T04:27:24Z-
dc.date.issued2018-
dc.identifier.issn0169-2607-
dc.identifier.urihttp://repository.ajou.ac.kr/handle/201003/17569-
dc.description.abstractBACKGROUND AND OBJECTIVE: The present study developed an effective surgical planning method consisting of a liver extraction stage, a vessel extraction stage, and a liver segment classification stage based on abdominal computerized tomography (CT) images.
METHODS: An automatic seed point identification method, customized level set methods, and an automated thresholding method were applied in this study to extraction of the liver, portal vein (PV), and hepatic vein (HV) from CT images. Then, a semi-automatic method was developed to separate PV and HV. Lastly, a local searching method was proposed for identification of PV branches and the nearest neighbor approximation method was applied to classifying liver segments.
RESULTS: Onsite evaluation of liver segmentation provided by the SLIVER07 website showed that the liver segmentation method achieved an average volumetric overlap accuracy of 95.2%. An expert radiologist evaluation of vessel segmentation showed no false positive errors or misconnections between PV and HV in the extracted vessel trees. Clinical evaluation of liver segment classification using 43 CT datasets from two medical centers showed that the proposed method achieved high accuracy in liver graft volumetry (absolute error, AE=45.2+/-20.9ml: percentage of AE, %AE=6.8%+/-3.2%: percentage of %AE>10%=16.3%: percentage of %AE>20%=none) and the classified segment boundaries agreed with the intraoperative surgical cutting boundaries by visual inspection.
CONCLUSIONS: The method in this study is effective in segmentation of liver and vessels and classification of liver segments and can be applied to preoperative liver surgical planning in living donor liver transplantation.
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dc.language.isoen-
dc.subject.MESHAutomation-
dc.subject.MESHHepatic Veins/anatomy & histology-
dc.subject.MESHHepatic Veins/diagnostic imaging-
dc.subject.MESHHumans-
dc.subject.MESHLiver/anatomy & histology-
dc.subject.MESHLiver/blood supply-
dc.subject.MESHLiver/diagnostic imaging-
dc.subject.MESHLiver/surgery-
dc.subject.MESHLiver Transplantation-
dc.subject.MESHLiving Donors-
dc.subject.MESHPatient Care Planning-
dc.subject.MESHPortal Vein/anatomy & histology-
dc.subject.MESHPortal Vein/diagnostic imaging-
dc.subject.MESHPreoperative Period-
dc.subject.MESHTomography, X-Ray Computed/methods-
dc.titleSegmentation of liver and vessels from CT images and classification of liver segments for preoperative liver surgical planning in living donor liver transplantation-
dc.typeArticle-
dc.identifier.pmid29544789-
dc.subject.keywordLiver segmentation-
dc.subject.keywordVessel segmentation-
dc.subject.keywordAutomatic segmentation-
dc.subject.keywordLiver segment classification-
dc.subject.keywordLiving donor liver transplantation-
dc.contributor.affiliatedAuthor김, 봉완-
dc.type.localJournal Papers-
dc.identifier.doi10.1016/j.cmpb.2017.12.008-
dc.citation.titleComputer methods and programs in biomedicine-
dc.citation.volume158-
dc.citation.date2018-
dc.citation.startPage41-
dc.citation.endPage52-
dc.identifier.bibliographicCitationComputer methods and programs in biomedicine, 158. : 41-52, 2018-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.identifier.eissn1872-7565-
dc.relation.journalidJ001692607-
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Surgery
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